Switch Definitions
NC |
Normally Closed |
ON |
NO |
Normally Open |
OFF |
( ) |
Momentary Action |
|
SPDT |
Single Pole Double
Throw |
2 or 3 Positions |
SPST |
Single Pole Single
Throw |
2 Positions |
3PDT |
Three Pole Double
Throw |
2 or 3 Positions |
4PDT |
Four Pole Double
Throw |
2 or 3 Positions |
DPDT |
Double Pole Double
Throw |
2 or 3 Positions |
DPST |
Double Pole Single Throw |
2 Positions |
NO/NC |
3 Poles |
Wired either/or |
Rotary |
Poles then Positions |
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