Catalogue siemens lightning and overvoltage protection devices

5/1
5
Lightning and Overvoltage
Protection Devices
General Data 5/2 Product overview
5/3 Introduction
Lightning Arresters 5/7 Requirement category B,
type 1, class I
Arrester Combinations 5/10 Requirement category B and C,
type 1 and 2, class I and II
Surge Arresters 5/13 Narrow version, requirement
category C, type 2, class II
5/16 Wide version, requirement
category C, type 2, class II
5/20 Multipole, requirement category D,
type 3, class III
Surge Protection
Adapters
5/22 Requirement category D,
type 3, class III
Accessories 5/25 For lightning and overvoltage
protection devices

Lightning and Overvoltage Protection Devices
General Data
Product overview
5/2 Siemens ET B1 T · 2007
■Overview
1 MWmodular width 18 mm
Lightning arresters – requirement category B, type 1, class I
• Plug-in protective blocks
• TN-C, TN-S and TT systems
• Rated arrester voltage Uc 350 V AC
• Lightning current 50 ... 100 kA
• All versions with remote indication contact
• Installation location: Main distribution board, upstream or
downstream from the counter
Arrester combinations– requirement category B and C, type 1 and 2, class I and II
• TN-C, TN-S and TT systems
• Lightning current 50 ... 100 kA
• All versions with remote indication contact
• Installation location: Main distribution board
Surge arresters, narrow version – requirement category C, type 2, class II
• 2, 3 and 4-pole (TN-C, TN-S and TT systems)
• Rated discharge current 20 kA
• Discharge surge current 40 kA
• Version without or with remote indication contact
• Installation location: Sub-distribution board
• Mounting width 12 mm/pole
Surge arresters, wide version – requirement category C, type 2, class II
• Plug-in protective blocks or compact version
• 1, 2, 3 and 4-pole (TN-C, TN-S and TT systems)
• Rated discharge current 20 kA
• Discharge surge current 40 kA
• Version without or with remote indication contact
• Installation location: Sub-distribution board
• Mounting width 18 mm/pole (1 MW/pole)
Surge arresters – requirement category D, type 3, class III
• For 1-phase and 3-phase systems
• Rated voltage
- 1-phase AC/DC 24 V, 60 V, 120 V, 230 V
- 3-phase system AC 230/400 V
• Monitoring device
• Installation location: As close as possible upstream from
the terminal equipment
Surge protection adapters – socket outlets, socket outlet adapters and combination protective devices
• Can be plugged into 5 socket outlets
• Status display
• Permanent thermal monitoring of the protection circuit
Accessories
• Male connectors for lightning and surge arresters
• Through-type terminals
• Busbars

General Data
Introduction
5/3Siemens ET B1 T · 2007
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■Overview
Introduction to lightning and overvoltage protection
Overvoltage destroys a considerable number of electrical and
electronic devices and units. And the damage is not limited to
just industrial and commercial facilities. Building management
systems as well as household appliances for daily use are also
affected.
Without effective protection against overvoltage there is a real
risk of costly repairs or replacement purchases due to the dam-
age done to equipment.
Listed below are units from various sectors which have sensitive
electronic circuitry and are frequently destroyed by overvoltage.
Clearly, protective measures for preventing overvoltage-related
damage are just as important to private households as for the
commercial and industrial sectors. An effective overvoltage pro-
tection concept for building management systems covers power
supply, telephone, aerial/reception, data processing and control
systems. What is important is that all the cables connected to a
device are linked to a suitable surge arrester. Nearly all devices
have a power supply. A television set, for example, also needs a
reception signal which is supplied over an aerial cable. And re-
gardless of whether the signal comes from an aerial or a wide
band cable, both the aerial input and power supply to the televi-
sion set should be protected. The need for such consistent all-
round protection applies equally to all other devices and units.
Building management systems and industry
• Heating controls
• Outdoor lighting
• Shutter controls
• Garage door actuators
• Central I&C
• Air conditioning
• Alarm systems
• Fire alarms
• Video surveillance
• Process computers
Office equipment
• Computers
• Printers
• Telecommunication systems
• Fax machines
• Copying machines
Private households
• Dishwashers
• Automatic washing machines
• Clothes dryers
• Coffee-makers
• Radio alarm clocks
• Refrigerators
• Deep-freezers
• Microwave ovens
• Electric cookers
• Telephone systems
Hobbies and leisure
• Television sets
• Aerial amplifiers
• Video recorders
• DVD players
• Hifi systems
• Computers
• Electrical musical instruments
• CB radio systems
In relation to the total value of the equipment concerned, the cost
of installing suitable protective devices usually pays for itself
when just a single unit of electrical equipment is saved just once
from destruction . Provided the performance parameters are not
exceeded, surge suppressors work many times, thus increasing
the benefits for the user several-fold.
The comprehensive surge protection concept
Fundamentals
Transient overvoltage results from lightning discharges, switch-
ing operations in electrical circuits and electrostatic discharges.
Without the protection provided by lightning arresters and over-
voltage protection equipment, even the robustly constructed
low-voltage supply systems of buildings or industrial plants are
unable to cope with a lightning discharge. The overvoltage
occurs only very briefly for millionths of a second. Nevertheless,
the mostly very high voltages involved are capable of destroying
electronic circuitry or the insulation between the conductors on
printed circuit-boards. And even if an electrical or electronic
device has passed the voltage withstand test according to
IEC 100045, as required for being awarded the CE symbol, it is
still not in a position to withstand unscathed all environmental
influences with regard to electromagnetic compatibility (EMC).
To prevent the destruction of electrical equipment by overvolt-
age, all endangered interfaces such as signal inputs and power
supplies must be connected to overvoltage protection equip-
ment. What is needed, depending on the case of application,
are components such as spark gaps, gas-filled surge arresters,
varistors and suppressor diodes, which because of the differ-
ences in their arresting and limiting specifications are arranged
singly or as combinations in a protection circuit.
The following damage can be caused by overvoltage
Overvoltage endangers and destroys a considerable number of
electrical and electronic installations. In the last few years there
has been a sharp increase in the frequency of incidents and the
total costs of the damage incurred. The statistics published by
property insurance companies have a clear tale to tell. Damage
to devices and their destruction occur all the more often when
devices need to be in permanent standby.
Repairs and replacement purchases are not the only expense
factor, however. Costs also arise through not being able to use
the affected system components and possibly even through loss
of software and data. The damage profiles generally cover
everything from destroyed cables, printed circuit-boards and
switching devices to substantial mechanical destruction of the
building installations. This damage can be reliably prevented by
lightning arresters, surge suppressors and arrester combina-
tions.

General Data
Introduction
Lightning and overvoltage protection – WHY?
Powerful information systems form the backbone of our modern
industrial society. A fault or the failure of these types of systems
can have far-reaching consequences. These can even cause
service and industry companies to go bankrupt.
The cause of faults are many and electromagnetic influences
play a major role. In a highly technical, electromagnetic environ-
ment, it is not advisable to simply wait for the mutual influencing
of electrical and electronic devices and systems and then pay
good money to eliminate the resulting problems. Rather it is es-
sential to plan and take preventative measures that reduce the
risk of influences, faults and destruction.
In spite of all this, the damage and loss statistics of electronic in-
surance companies are extremely worrying: More than a quarter
of all claims are as a result of overvoltages due to electromag-
netic influences.
Source: The causes of damage to electronics in 2001, analysis of 7370
claims Württembergische Versicherungs AG.
Causes of overvoltage
Depending on their cause, overvoltages are divided into two cat-
egories:
• LEMP (Lightning ElectroMagnetic Pulse) – overvoltages,
caused by atmospheric influences (e.g. direct lightning
strikes, electromagnetic lightning fields).
• SEMP (Switching ElectroMagnetic Pulse) – overvoltages
caused by switching operations (e.g. disconnection of short-
circuits, normal switching of loads).
Overvoltages that are the result of thunderstorms are caused by
direct/close-up or remote strikes (see diagram on page 5/5).
Direct or close-up strikes are lightning strikes to the lightning
protection system of a building, its immediate proximity or to the
electrical conductive systems of a building (e.g. l.v. power sup-
ply, TC and control lines). The resulting surge currents and volt-
ages are a particular threat to the system to be protected due to
their amplitude and power.
In the case of direct or close-up lightning strikes, the overvoltag-
es (see diagram on page 5/5) are caused by the voltage drop at
the surge grounding resistance and the resulting increase in
potential of the building, compared to the distant environment.
This represents the greatest possible loading of an electrical
plant in buildings.
The characteristic parameters of the surge current (peak value,
rate of current rise, charge content, specific energy) can be de-
scribed using the surge current waveform 10/350 µs (see dia-
gram: examples of impulse test currents). These are defined in
the international, European and national standards as test cur-
rent for components and devices for protection in the event of
direct strikes.
In addition to the voltage drop at the surge grounding resis-
tance, overvoltages also occur in electrical building installations
and the connected systems and devices, due to the induction
effect of the electromagnetic lightning field (see diagram on
page 5/5: Example 1b).
The energy of these induced overvoltages and the resulting
pulse currents is considerably less than that of a direct lightning
impulse current and is therefore only described with surge cur-
rent wave 8/20 µs (see diagram: Examples of impulse test
currents). Components and devices that do not carry currents
from direct lightning strikes are therefore checked using surge
currents 8/20 µs.
Examples of impulse test currents
The protection concept
Remote strikes are lightning strikes at a greater distance from
the objects to be protected, lightning strikes in the medium-
voltage overhead system or the immediate proximity thereof,
or lightning discharges from cloud to cloud (see diagram on
page 5/5: Cases 2a, 2b and 2c). At the same time as these in-
duced overvoltages, the effects of remote strikes on the electri-
cal system of a building are controlled through devices and
components, the dimensions of which correspond to surge cur-
rent wave 8/20 µs.
The causes of overvoltages due to switching operations in-
clude the following:
• Switching off of inductive loads
(e.g. transformers, reactors, motors),
• Ignition and interruption of electric arcs
(e.g. arc-welding device),
• Tripping of fuses.
The effects of switching operations in the electrical installation of
a building are simulated for testing purposes with surge currents
of waveform 8/20 µs.
To ensure the continuous availability of complex power and in-
formation systems, even in the event of direct lightning strikes,
further measures for overvoltage protection of electrical and
electronic systems are required as well as a building lightning
protection system. It is important to take all the causes of over-
voltages into account. For this purpose, the lightning protection
zone concept is used as described in IEC 62305-4
(DIN V VDE V 0185-4) (see diagram on page 5/6). The building
is divided into zones of different danger levels. Using these
zones, it is possible to determine the devices and components
required for the lightning and overvoltage protection.
23,7 %
15,4 %
22,9 %
5,6 %0,8 %
I2_11531a
27,1 %
4,6 %
Fire
Elementary
Overvoltages
(Lightning discharges and
Switching operations)
Other
Negligence
Water
Theft
Vandalism
s
[kA]
0
0 20 200 350400 600 800 1000
[ ]
I2_11532a
25
50
75
100
8
1
2
4
1
2
s[ ] Q [As] W/R [J/ ]
100 10/350 50 2,5 × 106
8 8/20 0,1 0,4 × 103
max [kA] Waveform
Impulse test current for
lightning arresters
Impulse test current for
surge arresters

General Data
Introduction
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An EMC-oriented lightning protection zone concept should also
include external lightning protection (with air terminals, arrest-
ers, grounding), equipotential bonding, room insulation and
overvoltage protection for power and information systems.
For the definition of lightning protection zones (LPZ), please use
the specifications made in the table "Definition of lightning
protection zones".
Definition of lightning protection zones
According to the demands and loads made on overvoltage pro-
tection devices with regard to their installation site, these are di-
vided into lightning arresters, surge arresters and arrester com-
binations.
The highest demands with regard to discharge capacity are
made on lightning current and arrester combinations, which im-
plement the transition from lightning protection zone LPZ 0A to
LPZ 1 or LPZ 0A to LPZ 2. These surge arresters must be able to
carry lightning partial currents of waveform 10/350 µs several
times and thus prevent these destructive currents from penetrat-
ing the electrical installation of a building. At the transition of
lightning protection zone LPZ 0B to LPZ 1 the downstream light-
ning arrester at the transition area of lightning protection zones
LPZ 1 auf LPZ 2 and higher, surge arresters are installed to pro-
tect against overvoltages. It is their task to further attenuate the
remaining extent of the upstream protection level and restrict the
overvoltages in the system, whether they are induced or self-
generated.
The lightning and overvoltage protective measures at the bor-
ders of the lightning protection zones apply in equal measure to
the energy and information system. The holistic approach of the
measures described in the EMC-oriented lightning protection
zone concept means it is possible to achieve permanent plant
availability of a modern infrastructure.
Causes for overvoltages during lightning discharges
Lightning
protection
zones
Description
LPZ 0A Zone where objects are exposed to direct lightning strikes
and must therefore carry the whole lightning current. The
undamped electromagnetic field occurs in this case.
LPZ 0B Zone where objects are not exposed to direct lightning
strikes but where the undamped electromagnetic field still
occurs.
LPZ 1 Zone where objects are not exposed to direct lightning
strikes and in which the currents are reduced compared
to Zone 0A. In this zone, the electromagnetic field may be
damped, depending on the insulation measures imple-
mented.
LPZ 2,
LPZ 3
If a significant reduction in the conducted currents and/ or
the electromagnetic field is required, subsequent zones
must be set up. The demand on these zones must be
geared towards the required environment zones of the
system to be protected.
I 2 _ 1 0 7 8 3
R s t
2 b
1
2 a
2 c
2 0 k V
L 1
L 2
L 3
P E N
1
1 a
1 b
2 a
2 b
2 c
1 b
1 a
D i r e c t / c l o s e - u p s t r i k e
Strike in outer lightning protection,
Process framework (in industrial plants),
Cables, etc.
Voltage drop at
surge grounding resistance R
Induced voltage in loops
I T s y s t e m
P o w e r
s y s t e m
st
R e m o t e s t r i k e :
Strike in medium-
voltage overhead lines
Overvoltage transformer
waves on overhead lines,
as a result of
cloud-cloud lightning strikes
Fields of lightning channel

General Data
Introduction
EMC-oriented lightning protection zone concept
M
A
B B
L E M P
L E M P
L E M P
B
S E M P
I2_11533
R o o m i n s u l a t i o n
V e n t i l a t i o n
T e r m i n a l
P o w e r -
e n g i n e e r i n g
s y s t e m
I T s y s t e m
L i g h t n i n g p r o t e c t i o n
e q u i p o t e n t i a l b o n d i n g
L i g h t n i n g c o n d u c t o r
L o c a l e q u i p o t e n t i a l b o n d i n g
S u r g e a r r e s t e r
L P Z 0
L P Z 1
L P Z 2
L P Z 1
L P Z 0 L P Z 0
L P Z 3
L P Z 2
L P Z 0

Lightning Arresters
Requirement category B, type 1, class I
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■Benefits
• Type 1 lightning arresters do not require decoupling reactors
to be fitted in the plant. This simplifies plant configuration and
reduces space requirements. No time is wasted on planning
the installation of decoupling reactors. This also considerably
cuts costs.
• The rated arrester voltage is a uniform 350 V AC. This in-
creases safety in systems with extended voltage overshoots.
• All lightning arresters are fitted with a mechanical fault indica-
tion, which does not require an extra power supply. This
means they can be installed in the precounter area, where
electrical plants can be protected particularly effectively.
• The protective modules are plug-in versions. No mounting
work required when replacing the protective modules. When
taking insulation measurements, the protective modules are
simply removed, no need to disconnect the power supply.
• All type 1 lightning arresters are fitted with a remote indication
contact, which is inserted in the device and does not require
any further space. A remote signaling is always possible, even
in the event of a power failure.
■Application
• Type 1 lightning arresters include the system cables in the
equipotential bonding, which protects the low-voltage
systems against the overvoltages and high surge currents that
can be triggered by direct or indirect lightning strikes.
• The protection level is lowered to 1.5 kV by the lightning ar-
rester, which reduces the load on the plant if a lightning strike
is discharged.
• The lightning arresters are enclosed and are suitable for
installation in the precounter area.
• Tested by wave-shaped lightning impulse, 25/100 kA with
waveform 10/350 µs.
■Technical specifications
Design Lightning arresters
Order No. 5SD7 412-1 5SD7 413-1 5SD7 414-1
Approvals KEMA (available soon)
Requirement category B to E DIN VDE 06754-6;
SPD class I according to IEC 61643-11;
SPD type 1 according to EN 61643-1
Rated voltage UN V AC 230/400 230/400 230/400
Rated arrester voltage Uc
• L/N, N/PE, L/PEN V AC 350 350 350
Lightning impulse current Iimp (10/350 µs)
• L/N or L/PEN, 1-pole/3-pole kA 25/100 25/75 25/100
• N/PE kA 100 -- 100
Rated discharge surge current In (8/20 µs)
• N/PE kA 100 -- 100
Protection level Up
• L/N, N/PE, L/PEN kV ≤1.5 ≤1.5 ≤1.5
Follow current discharge capacity Ifi (AC)
• L/N or L/PEN kA 50 50 50
• N/PE A 100 -- 100
Response time tA
• L/N or L/PEN ns ≤100 ≤100 ≤100
• L-(N)-PE ns ≤100 -- ≤100
Max. required back-up protection A 315 gL/gG 315 gL/gG 315 gL/gG
Short-circuit strength at max. back-up
protection
kArms 50 50 50
TOV voltage UT
• L/N V/s 415/5 415/5 415/5
• N/PE V/ms 1200/200 -- 1200/200
Temperature range °C -40 ... +80
Degree of protection IP20
Conductor cross-section
• Finely stranded mm2
0.5 ... 25
• Solid mm2
0.5 ... 35
Mounting width according to DIN 43880 MW 4 6 8
Remote signaling yes
Contact type Floating CO contact (plug-in)
Operational voltage, max. V AC 250
V DC 125
Operational current, max.
• Resistive/inductive load AC 1 A/1 A
• Resistive/inductive load DC 0.2 A/30 mA
• Finely stranded/solid mm2
1.5/1.5

Lightning Arresters
■Selection and ordering data
■Dimensional drawings
2-pole
5SD7 412-1
3-pole
5SD7 413-1
Dis-
charge
capacity
MW Order No. Weight
1 unit
approx.
PS*/
P. unit
kA kg Unit(s)
Lightning arresters
2-pole
for TT and TN-S systems 100 4 5SD7 412-1 0.732 1
3-pole
for TN-C systems 75 6 5SD7 413-1 0.909 1
4-pole
I2_12719
45
90
99
43,56,772
64
RS
I2_12720
45
90
99
43,56,7108
64
RS
* You can order this quantity or a multiple thereof.

Lightning Arresters
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4-pole
5SD7 414-1
■Schematics
2-pole
5SD7 412-1
3-pole
5SD7 413-1
4-pole
5SD7 414-1
I2_12721
45
90
99
43,56,7144
64
RS
PE L1
N
I2_12565
12 14
11
RS
L1 L2 L3
PEN
I2_12566
12 14
11
RS
PE L1 L2 L3
N
I2_12567
12 14
11
RS

Arrester Combinations
Requirement category B and C,
■Benefits
• Type 1 and 2 arrester combinations do not require decoupling
reactors to be fitted in the plant. This simplifies plant configu-
ration and reduces space requirements. No time is wasted on
planning the installation of decoupling reactors. This also con-
siderably cuts costs.
• The rated arrester voltage is a uniform 350 V AC. This
increases safety in systems with longer voltage overshoots.
• All arrester combinations are fitted with a mechanical fault in-
dication, which does not require an extra power supply.
simply removed, no need to disconnect the combination
arrester from the power supply.
• The same type 2, class II overvoltage protective modules are
used as for the slim version of the surge arresters (5SD7 42.).
This simplifies stock-keeping.
• All arrester combinations are fitted with a remote indication
in the event of a power failure.
■Application
• Type 1 and 2 arrester combinations include the system cables
in the equipotential bonding, which protects the low-voltage
systems against the overvoltages and high currents that can
be triggered by direct lightning strikes.
• The protection level is lowered to 1.5 kV by the arrester com-
binations, which reduces the load on the plant if a lightning
strike is discharged.
• Tested by wave-shaped lightning impulse, 25/100 kA with
waveform 10/350 µs.
• A thermal isolating arrester disconnector offers a high degree
of protection against overload during runtime.
Design Arrester combinations
Order No. 5SD7 442-1 5SD7 443-1 5SD7 444-1
Requirement category B to E DIN VDE 06754-6;
SPD class I according to IEC 61643-11;
Rated voltage UN V AC 230/400 230/400 230/400
• L/N, N/PE, L/PEN V AC 350 350 350
Lightning impulse current Iimp (10/350 µs)
• N/PE kA 100 -- 100
• N/PE kA 100 -- 100
Protection level Up
• L/N, N/PE, L/PEN kV ≤1.5 ≤1.5 ≤1.5
Follow current discharge capacity Ifi (AC)
• L/N or L/PEN kA 25 25 25
• N/PE A 100 -- 100
Response time tA
• L/N or L/PEN ns ≤100 ≤100 ≤100
• L-(N)-PE ns ≤100 -- ≤100
Max. required back-up protection A 315 gL/gG 315 gL/gG 315 gL/gG
protection
kArms 50 50 50
TOV voltage UT
• L/N V/ms 350/5 350/5 350/5
• N/PE V/ms 1200/200 -- 1200/200
0.5 ... 25
• Solid mm2
0.5 ... 35
Mounting width according to DIN 43880 MW 4 6 8
Visual function/fault indication yes
Contact type Floating CO contact (plug-in)
V DC 125
1.5/1.5

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2-pole
5SD7 442-1
3-pole
5SD7 443-1
Dis-
charge
capacity
MW Order No. Weight
1 unit
approx.
PS*/
P. unit
kA kg Unit(s)
Arrester combinations
2-pole
3-pole
for TN-C systems 75 6 5SD7 443-1 1.040 1
4-pole
I2_12696
45
90
99
43,56,772
64
RS
I2_12697
45
90
99
43,56,7108
64
RS

4-pole
5SD7 444-1
■Schematics
2-pole
5SD7 442-1
3-pole
5SD7 443-1
4-pole
5SD7 444-1
I2_12698
45
90
99
43,56,7144
64
RS
PE L1
N
I2_12568
12 14
11
RS
L1 L2 L3
PEN
I2_12569
12 14
11
RS
PE L1 L2 L3
N
I2_12570
12 14
11
RS

Surge Arresters
Narrow version,
requirement category C, type 2, class II
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■Benefits
• Type 2 surge arresters do not require decoupling reactors to
be fitted in the system. This simplifies plant configuration and
the installation of decoupling reactors. This considerably cuts
costs.
increases safety in systems with extended voltage overshoots.
• All type 2 surge arresters are fitted with a mechanical fault
indication, which does not require an extra power supply.
simply removed, no need to disconnect the surge arrester
from the power supply.
• The same protective modules are used as for combination
arresters. This simplifies stock-keeping.
• All type 2 surge arresters are available with a remote signaling
in the event of a power failure. The remote signaling signals a
fault even if the protective module is not plugged in.
• The protective module is only 12 mm wide and is an outstand-
ing space-saving solution.
■Application
• Type 2 surge arresters are used after type 1 lightning arresters
in main distribution boards or sub-distribution boards and pro-
tect low-voltage systems against overvoltages.
• The type 2 surge arrester lowers the level of protection to
1.5 kV.
Design Multipole surge arresters, 350 V
without remote signaling with remote signaling
Order No. 5SD7 422-0 5SD7 423-0 5SD7 424-0 5SD7 422-1 5SD7 423-1 5SD7 424-1
Requirement category C to E DIN VDE 06754-6;
SPD class II according to IEC 61643-11;
Rated voltage UN V AC 230/400 230/400 230/400 230/400 230/400 230/400
• L/N or L/PEN V AC 350 350 350 350 350 350
• N/PE V AC 264 -- 264 264 -- 264
• L/N or L/PEN, 1-pole/3-pole kA 20 20/60 20 20 20/60 20
• N/PE kA 20 -- 20 20 -- 20
Discharge surge current Imax (8/20 µs)
• L/N or L/PEN, 1-pole/3-pole kA 40 40/120 40 40 40/120 40
• N/PE kA 40 -- 40 40 -- 40
Protection level Up
• L/N or L/PEN kV ≤1.4 ≤1.4 ≤1.4 ≤1.4 ≤1.4 ≤1.4
• N/PE kV ≤1.5 -- ≤1.5 ≤1.5 -- ≤1.5
Response time tA
• L/N ns ≤25 ≤25 ≤25 ≤25 ≤25 ≤25
• N/PE ns ≤100 -- ≤100 ≤100 -- ≤100
Max. required back-up protection A 125 gL/gG 125 gL/gG 125 gL/gG 125 gL/gG 125 gL/gG 125 gL/gG
protection
kArms 25 25 25 25 25 25
TOV voltage UT
• L/N V/s 415/5 415/5 415/5 415/5 415/5 415/5
• N/PE V/ms 1200/200 -- 1200/200 1200/200 -- 1200/200
2.5 ... 16
• Solid mm2
0.5 ... 25
Mounting width according to DIN 43880 mm 26 38 50 26 38 50
Remote signaling no no No yes yes yes
Contact type -- -- -- Floating CO contact (plug-in)
V DC 125
1.5/1.5

Surge Arresters
Narrow version,
2-pole
5SD7 422-.
5SD7 422-0 without RS (remote signaling)
3-pole
5SD7 423-.
Discharge
capacity rated
value/max.
Mounting
width
Order No. Weight
1 unit
approx.
PS*/
P. unit
kA mm (MW) kg Unit(s)
Surge arresters
5SD7 422-0
2-pole
for TT and TN-S systems
• Without remote signaling 20/40 24 (1 1/3) 5SD7 422-0 0.220 1
• With remote signaling 20/40 24 (1 1/3) 5SD7 422-1 0.227 1
5SD7 423-0
3-pole
for TN-C systems
• Without remote signaling 20/40 36 (2) 5SD7 423-0 0.320 1
• With remote signaling 20/40 36 (2) 5SD7 423-1 0.330 1
5SD7 424-1
4-pole
for TT and TN-S systems
• Without remote signaling 20/40 48 (2 2/3) 5SD7 424-0 0.408 1
• With remote signaling 20/40 48 (2 2/3) 5SD7 424-1 0.416 1
I2_12699
45
90
43,56,726
64
99
RS
45
90
43,56,738
64
I2_12700
99
RS

Surge Arresters
Narrow version,
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
4-pole
5SD7 424-.
■Schematics
2-pole
5SD7 422-.
3-pole
5SD7 423-.
4-pole
5SD7 424-.
45
90
43,56,750
64
I2_12701
99
RS
L1PE
N
I2_12571
12 14
11
RS
L3L2L1
PEN
I2_12572
12 14
11
RS
L3L2L1PE
NI2_12573
12 14
11
RS

Surge Arresters
Wide version,
■Benefits
• Type 2 surge arresters do not require decoupling reactors to
be fitted in the system. This simplifies plant configuration and
the installation of decoupling reactors. This considerably cuts
costs.
increases safety in systems with extended voltage overshoots.
• All type 2 surge arresters are fitted with a mechanical fault
indication, which does not require an extra power supply.
simply removed, no need to disconnect the surge arrester
from the power supply.
• Type 2 surge arresters are available with a remote signaling
in the event of a power failure. The remote signaling signals a
fault even if the protective module is not plugged in.
• The width of a protective module is 1 MW. This means that it
can also be rail-mounted with a miniature circuit-breaker or
RCCB.
■Application
• Type 2 surge arresters are used after type 1 lightning arresters
in main distribution boards or sub-distribution boards and pro-
tect low-voltage systems against overvoltages.
• The type 2 surge arrester lowers the level of protection to
1.5 kV.
Design Single-pole surge arresters, wide version
N/PE without remote signaling with remote signaling
plug-in compact plug-in compact plug-in
Order No. 5SD7 481-0 5SD7 466-0 5SD7 461-0 5SD7 466-1 5SD7 461-1
Rated voltage UN V AC 230 230 230 230 230
• L/N V AC -- 350 350 350 350
• N/PE V AC 260 -- -- -- --
• L/N kA -- 20 20 20 20
• N/PE kA 20 -- -- -- --
• L/N kA -- 40 40 40 40
• N/PE kA 40 -- -- -- --
Lightning test current Iimp (10/350 µs) kA 12 -- -- -- --
Protection level Up
• L/N kV -- ≤1.4 ≤1.4 ≤1.4 ≤1.4
• N/PE kV ≤1 -- -- -- --
Response time tA
• L/N ns -- ≤25 ≤25 ≤25 ≤25
• N/PE ns ≤100 -- -- -- --
Max. required back-up protection A 125 gL/gG 125 gL/gG 125 gL/gG 125 gL/gG 125 gL/gG
protection
kArms 25 25 25 25 25
TOV voltage UT
• L/N V/s -- 415/5 415/5 415/5 415/5
0.5 ... 25
• Solid mm2
0.5 ... 35
Mounting width according to DIN 43880 MW 1 1 1 1 1
Remote signaling no no no yes yes
Contact type -- -- -- Floating CO contact (plug-in)
V DC 125
1.5/1.5

Surge Arresters
Wide version,
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Design Multipole surge arresters, wide version, plug-in
without remote signaling contact with remote signaling contact
3-pole 4-pole 3-pole 4-pole
Order No. 5SD7 463-0 5SD7 464-0 5SD7 463-1 5SD7 464-1
Rated voltage UN V AC 230/400 230/400 230/400 230/400
• L/N or L/PEN V AC 350 350 350 350
• N/PE V AC -- 264 -- 264
• L/N or L/PEN, 1-pole/3-pole kA 20/60 20 20/60 20
• N/PE kA -- 20 -- 20
• L/N or L/PEN, 1-pole/3-pole kA 40/120 40 40/120 40
• N/PE kA -- 40 -- 40
Protection level Up
• L/N or L/PEN kV ≤1.4 ≤1.4 ≤1.4 ≤1.4
• N/PE kV -- ≤1.5 -- ≤1.5
Response time tA
• L/N or L/PEN ns ≤25 ≤25 ≤25 ≤25
• N/PE ns -- ≤100 -- ≤100
Max. required back-up protection A 125 gL/gG 125 gL/gG 125 gL/gG 125 gL/gG
protection
kArms 25 25 25 25
TOV voltage UT
• L/N or L/PEN V/s 415/5 415/5 415/5 415/5
• N/PE V/ms -- 1200/200 -- 1200/200
0.5 ... 25
• Solid mm2
0.5 ... 35
Mounting width according to DIN 43880 MW 3 4 3 4
Remote signaling no no yes yes
Contact type -- -- Floating CO contact (plug-in)
V DC 125
1.5/1.5

Surge Arresters
Wide version,
Discharge capacity
rated value/max.
MW Order No. Weight
1 unit
approx.
PS*/
P. unit
kA kg Unit(s)
Surge arresters, wide version
5SD7 466-1
1-pole, compact (non plug-in)
• Without remote signaling 20/40 1 5SD7 466-0 0.114 1
• With remote signaling 20/40 1 5SD7 466-1 0.120 1
5SD7 461-1
1-pole, plug-in
N/PE, 1-pole, plug-in
5SD7 463-1
3-pole, plug-in, 3+0 circuit
for TN-C systems
5SD7 464-0
4-pole, plug-in, 3+1 circuit
for TN-C and TN-S systems

Surge Arresters
Wide version,
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
5SD7 461-., 5SD7 481-0
5SD7 461-0 and 5SD7 481-0 without RS (remote signaling)
5SD7 463-.
5SD7 464-.
5SD7 466-.
■Schematics
5SD7 461-.
5SD7 463-.
5SD7 464-.
5SD7 466-. 5SD7 481-0
I2_12703
45
90
99
43,56,718
64
RS
I2_12704
45
90
99
43,56,754
64
RS
I2_12705
45
90
99
43,56,772
64
RS
I2_12702
45
90
99
43,56,718
64
RS
(L/N)
+
L/N
12
11
14
( )
I2_12621
RS
L3L2L1
PEN
I2_12572
12 14
11
RS
L3L2L1PE
N
I2_12573
12 14
11
RS
L1
PEN
I2_12622
12 14
11
RS
PE
N
I2_12623

Surge Arresters
Multipole,
requirement category D, type 3, class III
■Benefits
work required when replacing the protective modules.
• All type 3 surge arresters are fitted with a mechanical fault in-
dication, which does not require an extra power supply.
• In the event of a power failure, a remote signaling is output
over an optocoupler with open collector output.
■Application
• Type 3 surge arresters are installed after the type 2 surge
arresters in sub-distribution boards close to the loads in single
or multiphase systems and further limit the overvoltage in
order to protect the connected loads.
• Type 3 surge arresters in voltage versions 24, 60, 120 and
240 V can be used in AC and DC systems.
Design Multipole surge arresters, plug-in
2-pole 4-pole
Order No. 5SD7 432-1 5SD7 432-2 5SD7 432-3 5SD7 432-4 5SD7 434-1
Approvals KEMA
Requirement category D to E DIN VDE 06754-6;
SPD class III according to IEC 61643-11;
Rated voltage UN
V AC 230 120 60 24 230/400
V DC 230 120 60 24 --
Rated current IN (at 30 °C) A 26 26 26 26 3 x 26
V AC 253 150 100 34 335
V DC 275 200 130 44 --
Rated discharge surge current In (8/20 µs) kA 3 2.5 2.5 1 1.5
Max. discharge surge current Imax (8/20 µs) kA 10 10 6.5 2 4.5
Combined surge Uoc kV 6 6 4 2 4
Protection level Up V ≤1500/≤600 ≤850/≤350 ≤700/≤250 ≤550/≤100 ≤1200
Response time tA ns ≤100 ≤100 ≤100 ≤100 ≤100
Max. required back-up protection A 25 gL/gG 25 gL/gG 25 gL/gG 25 gL/gG 25 gL/gG
0.2 ... 4
• Solid mm2
0.2 ... 2.5
Mounting width according to DIN 43880 MW 1 1 1 1 2
Contact type NC contacts
Operational voltage, max. V 250
Operational current, max. A 3

Surge Arresters
Multipole,
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
2-pole
5SD7 432-.
4-pole
5SD7 434-1
■Schematics
2-pole
5SD7 432-.
Rated
voltage Un
MW Order No. Weight
1 unit
approx.
PS*/
P. unit
kg Unit(s)
Surge arresters, plug-in
5SD7 432-1
2-pole V AC, V DC
with remote signaling 24 1 5SD7 432-4 0.027 1
60 1 5SD7 432-3 0.026 1
120 1 5SD7 432-2 0.081 1
230 1 5SD7 432-1 0.071 1
4-pole V AC
with remote signaling 230/400 2 5SD7 434-1 0.056 1
I2_12706
45
71
90
45
296,718
7 9 11
58
8 1012
I2_12707
45
71
90
45
296,736
58
I2_12576
6
11
12
2
4
L
5
L
1
3
N
PE
N
PE

Surge Protection Adapters
Requirement category D, type 3, class III
■Benefits
• All type 3 surge protection adapters are fitted with an LED as
a visual status and fault indication.
• The protection circuit is continuously thermally monitored. This
ensures constant safe operation for the operator.
• The attractive design fits well into residential living spaces.
■Application
• Type 3 surge protection adapters for insertion in a 5
socket outlet protect electronic loads against overvoltages
from main power supplies.
• However, overvoltages do not just reach loads over power
cables. Telecommunication devices for TAE, ISDN/RDS and
RJ12 connection, televisions or radios with aerial connection
or satellite radio connection are all connected to a further
power supply system which may also pass overvoltages on to
devices.
Design Surge protection adapters
5, line
contactor
TC analog/
TAE
ISDN TV/radio TC analog/
RJ12
TV/SAT
Order No. 5SD7 435-0 5SD7 435-2 5SD7 435-3 5SD7 435-5 5SD7 435-6 5SD7 435-7
Approvals VDE (available soon)
Requirement category D to E DIN VDE 06754-6;
SPD class III according to IEC 61643-11;
Line contactor
Rated voltage UN (power supply) V AC 230 230 230 230 230 230
Rated current IN/ambient temperature A/°C 16/30 16/30 16/30 16/30 16/30 16/30
(power supply)
• L/N V AC 275 275 275 275 275 275
• L-(N)-PE V AC 360 360 360 360 360 360
Rated discharge surge current In (8/20 µs) kA 3 3 3 3 3 3
Combined surge Uoc kV 4 4 4 4 4 4
Protection level Up
• Core – Shield/Core – Ground kV ≤1.2 ≤1.2 ≤1.2 ≤1.2 ≤1.2 ≤1.2
Response time ta ns 25 25 25 215 25 25
Device protection
Rated voltage UN (power supply) V AC 230 -- -- -- -- --
Rated current IN/ambient temperature A/°C 16/30 1.5/25 1.5/25 1.5/25 1.5/25 1.5/25
(power supply)
• L/N V AC 275 -- -- -- -- --
V DC -- 200 6 72 200 72
• L-(N)-PE V AC 360 -- -- -- -- --
V DC -- 200 6 72 200 72
• Core – Shield kA 3 1 0.65 2.5 1 2.5
• Core – Ground kA 3 2.5 2.5 5 2.5 5
Combined surge Uoc kV 4 -- -- -- -- --
Protection level Up
• Core – Shield/Core – Ground kV ≤1.2 ≤0.9 -- ≤0.7/≤0.9 ≤0.9 ≤0.7/≤0.9
Output voltage limit at 1 kV/µs
• Core - Core V -- ≤360 ≤65 -- -- --
• Core – Shield V -- -- -- ≤700 -- ≤700
• Core – Ground V -- ≤450 ≤900 ≤900 -- ≤900
Residual current at In
• Core – Core V -- ≤35 -- -- ≤35 --
• Core – Shield V ≤1200 -- -- ≤30 -- ≤30
• Core – Ground V ≤900
L-/N/PE
≤30 -- ≤30 ≤30 ≤30
Response time ta
• Core – Core ns -- ≤25 ≤1 -- ≤25 --
• Core – Shield ns ≤25 -- -- ≤100 -- ≤100
• Core – Ground ns ≤100
L-/N/PE
≤100 ≤100 ≤100 ≤100 ≤100
Limit frequency fG (3 dB) -- -- -- ≥ 1.8 GHz -- ≥ 1.8 GHz
• In 100 Ω system (typ.) -- -- 300 kHz -- -- --
• In 600 Ω system (typ.) -- 700 kHz -- -- 700 kHz --
General
Flammability category according to UL 94 V0
Degree of protection according to IEC 60529 IP20

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Order No. Weight
1 unit
approx.
PS*/
P. unit
kg Unit(s)
Surge protection adapters
for line contactor 5SD7 435-0 0.115 1
for telecommunication devices/TAE 5SD7 435-2 0.156 1
for ISDN/RDSI 5SD7 435-3 0.156 1
for TV/radio 5SD7 435-5 0.156 1
for telecommunication devices/RJ12 5SD7 435-6 0.144 1
for SAT installations 5SD7 435-7 0.156 1

5SD7 435-.
■Schematics
5SD7 435-0
5SD7 435-2
5SD7 435-3
5SD7 435-5, 5SD7 435-7
5SD7 435-6
I2_12708
52
63
42
36
103
79
LL
+
N N
I2_12616
I2_12617
+
La Lb
La Lb
PE N L
+
5 4 6 3
I2_12618
+
5
b2
4 6
a2 b1
3 PE N L
a1
+
+
I2_12619
PE N L
+++
I2_12620a
+
La
3 4 2 5
Lb
La Lb
PE N L
+
+
La Lb
La Lb
3 4 2 5

Accessories
For lightning and overvoltage protection devices
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Design Through-type terminals
Order No. 5SD7 490-1
Requirement category IEC 61643-1:11998-02,
UL 1059,
UL 486E
Rated voltage Un V AC 230
Rated current In (at 30 °C) A 125
Rated arrester voltage Uc V 500 DC/AC
Max. required back-up protection A 125 gL/gG
protection
kArms 25
0.5 ... 25
• Solid mm2
0.5 ... 35
Mounting width according to DIN 43880 MW 1
Order No. Weight
1 unit
approx.
PS*/
P. unit
kg Unit(s)
Through-type terminals
for simple wiring in various wiring versions 5SD7 490-1 0.191 1
Connectors
5SD7 418-0
for 5SD7 41. lightning arresters,
requirement category B, type 1, class I
• Lightning arresters L/N Ifi 50 kAeff
for 5SD7 41 lightning arresters.
5SD7 418-1 0.240 1
• Lightning arresters N/PE
for 5SD7 41. lightning arresters and
5SD7 44. arrester combinations.
5SD7 418-0 0.240 1
5SD7 448-1
for 5SD7 44. arrester combinations, requirement
category B, type 1, class I
• Lightning arresters L/N Ifi 25 kAeff 5SD7 448-1 0.129 1/100
• Lightning arresters N/PE
for 5SD7 41. lightning arresters and
5SD7 418-0 0.240 1
5SD7 428-1
for 5SD7 42. surge arresters and 5SD7 44. arrester combi-
nations, requirement category C, type 2, class II
• Surge arresters L/N
for 5SD7 42. surge arresters and
5SD7 428-1 0.052 1
• Surge arresters N/PE 5SD7 428-0 0.049 1
5SD7 468-1
for 5SD7 46. surge arresters, requirement category C,
type 2, class II
• Surge arresters L/N 5SD7 468-1 0.051 1
• Surge arresters N/PE 5SD7 488-0 0.040 1

Accessories
For lightning and overvoltage protection devices
For busbars for lightning and overvoltage protection devices,
see chapter "Busbars for modular installation devices"
5SD7 490-1
Order No. Weight
1 unit
approx.
PS*/
P. unit
kg Unit(s)
Connectors
5SD7 437-1
for surge arresters, wide version, 2-pole, 5SD7 432-.,
• Rated voltage Un = 230 V 5SD7 437-1 0.028 1
for surge arresters, wide version, 4-pole, 5SD7 434-1,
5SD7 438-1 0.162 1
I2_12709
45
90
43,56,718
64

Catalogue siemens lightning and overvoltage protection devices

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Catalogue siemens lightning and overvoltage protection devices