MICRO SWITCH Premium Subminiature Basic Switches, SM Series
Table 5. Numeric Designations for MICRO SWITCH SM Series/Order Guide
Prefix
Description
Suffix
Description
1SM
11SM
12SM
21SM
22SM
23SM
41SM
101SM
111SM
112SM
122SM
151SM
301SM
302SM
311SM
321SM
322SM
401SM
411SM
412SM
Standard pin plunger construction, up to 80,000
operations
Long-life pin plunger construction, up to
10,000,000 operations
Gold bifurcated contacts
Same as 1SM (formerly had DAP material)
Same as 11SM (formerly had DAP material)
Same as 12SM (formerly had DAP material)
11 A construction (11SM construction)
1SM with an integral leaf actuator
11SM with an integral spring leaf
12SM with an integral spring leaf
22SM with an integral spring leaf
51SM with an integral spring leaf
1SM with an integral rigid lever
1SM with an integral roller lever
Integral rigid lever
21SM with an integral rigid lever
22SM with an integral rigid lever
Dust/splash resistant 1SM
Dust/splash resistant 11SM
Dust/splash resistant 12SM
23
400
500
700
1000
Gold contacts
Low differential travel series
Reverse terminal designation
Low force series
Gold alloy
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