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1. Gold Contact Snap-Action
Switches
T h e m a t e r i a l s i n c l u d e d i n t h i s c o m p i l a t i o n a r e f o r t h e u s e o f D w y e r I n s t r u m e n t s , I n c . p o t e n t i a l c u s t o m e r s
a n d c u r r e n t e m p l o y e e s a s a r e s o u r c e o n l y . T h e y m a y n o t b e r e p r o d u c e d , p u b l i s h e d , o r t r a n s m i t t e d
e l e c t r o n i c a l l y f o r c o m m e r c i a l p u r p o s e s . F u r t h e r m o r e , t h e C o m p a n y ’ s n a m e , l i k e n e s s , p r o d u c t n a m e s , a n d
l o g o s , i n c l u d e d w i t h i n t h e s e c o m p i l a t i o n s m a y n o t b e u s e d w i t h o u t s p e c i f i c , w r i t t e n p r i o r p e r m i s s i o n f r o m
D w y e r I n s t r u m e n t s , I n c .
© C o p y r i g h t 2 0 1 5 D w y e r I n s t r u m e n t s , I n c .

2. Gold-Contact Switches
O v e r v i e w
 M a n y o f D w y e r I n s t r u m e n t s s w i t c h p r o d u c t s h a v e s t a n d a r d
s n a p - a c t i o n s w i t c h e s
 S n a p - a c t i o n s w i t c h e s h a v e a
m e c h a n i c a l m o v e m e n t t h a t s n a p s
t h e c o n t a c t s t o g e t h e r a n d a p a r t t o
m a k e o r b r e a k t o e l e c t r i c a l c i r c u i t

3. Gold-Contact Switches
O v e r v i e w
 S i l v e r c o n t a c t s n a p s w i t c h e s a r e v e r y v e r s a t i l e
 T h e y o f f e r h i g h c o n t a c t r a t i n g s c o m m o n l y u p t o 1 0 o r 1 5 a m p s
w h e n u s e d w i t h 1 2 0 v o l t s A C
 T h e s e s w i t c h e s a r e o f t e n u s e d f o r c o n t r o l c i r c u i t s w i t h h e a v i e r
l o a d r e q u i r e m e n t s s u c h a s p u m p s , m o t o r s , f a n s , a n d i n c a n d e s c e n t
l i g h t b u l b s

4. Gold-Contact Switches
O v e r v i e w
 S i l v e r c o n t a c t s w i t c h e s , h o w e v e r, d o n o t w o r k w i t h a p p l i c a t i o n s
t h a t a r e l o w c u r r e n t a n d v o l t a g e , t y p i c a l l y u n d e r a r o u n d 3 0 0
m i l l i a m p s
 T h e s e s w i t c h e s a r e o f t e n u s e d f o r
l o g i c c i r c u i t s f o r c o n t r o l l e r s ,
c o m p u t e r s , a n d s i m i l a r t h a t a r e
j u s t l o o k i n g a t a d i s c r e t e s i g n a l
v e r s u s h a v i n g a h i g h l o a d

5. Gold-Contact Switches
O v e r v i e w
 W i t h l o w c u r r e n t a p p l i c a t i o n s , t h e s i l v e r c o n t a c t b u i l d s u p a
l a y e r o f o x i d a t i o n t h a t p r e v e n t s t h e c o n t a c t f r o m c o m p l e t i n g t h e
c i r c u i t
 T h i s c a n b e e s p e c i a l l y b a d i n a p p l i c a t i o n s t h a t h a v e l o n g p e r i o d s
o f i n a c t i v i t y o r e n v i r o n m e n t a l c o n d i t i o n s t h a t a c c e l e r a t e t h e
o x i d a t i o n
 G o l d c o n t a c t s d o n o t h a v e t h i s o x i d a t i o n i s s u e

6. Gold-Contact Switches
O v e r v i e w
 M a n y o f D w y e r ’s s w i t c h p r o d u c t s o f f e r a g o l d c o n t a c t o p t i o n
 G o l d - C o n t a c t S w i t c h e s a r e o f f e r e d i n :
 L e v e l s w i t c h e s
 F l o w s w i t c h e s
 P r e s s u r e s w i t c h e s

7. Gold-Contact Switches
O v e r v i e w
 S o m e e x a m p l e s i n c l u d e :
 S e r i e s L 4 F L O T E C T ® F l o a t S w i t c h
 S e r i e s L 6 F L O T E C T ® L i q u i d L e v e l S w i t c h

8. Gold-Contact Switches
O v e r v i e w
 S o m e e x a m p l e s i n c l u d e :
 S e r i e s V 4 F l o t e c t ® V a n e - O p e r a t e d
F l o w S w i t c h
 S e r i e s V 6 F l o t e c t ® M i n i - S i z e F l o w S w i t c h
 S e r i e s V 8 F l o t e c t ® V a n e - O p e r a t e d
F l o w S w i t c h

9. Gold-Contact Switches
O v e r v i e w
 S o m e e x a m p l e s i n c l u d e :
 S e r i e s 1 8 0 0 L o w D i f f e r e n t i a l P r e s s u r e
S w i t c h f o r G e n e r a l I n d u s t r i a l S e r v i c e
 S e r i e s 1 9 0 0 C o m p a c t L o w D i f f e r e n t i a l
P r e s s u r e S w i t c h e s
 S e r i e s D A / D S B o u r d o n Tu b e
P r e s s u r e S w i t c h
 S e r i e s H 3 E x p l o s i o n - P r o o f
D i f f e r e n t i a l P r e s s u r e S w i t c h