Datasheet

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