The Siemens 3SF3100-0CV00-0BA2 is a communication-capable position switch with an integrated AS-i adapter, designed for direct connection to an AS-i bus network via the insulation displacement method. It uses a mechanical active principle with a rounded plunger actuator, and the switching function is positive opening — meaning the NC contact is mechanically forced open when the actuator is depressed, even if the contacts weld. That positive opening feature is critical for safety circuits: it guarantees the normally-closed contact breaks when the switch is actuated, which is the standard requirement for interlock and guard-door monitoring per IEC 60947-5-1.
Fit and deployment context
The housing is a metal block design per EN 50041, painted, with a rounded switch head and a 10 mm outer diameter. It fastens with screws (screw fixing) and carries an IP65 protection class, so it withstands washdown and dusty environments — suitable for conveyor lines, packaging machinery, or material-handling stations where water or coolant spray is present. The M12 connector simplifies field wiring; the AS-i insulation displacement method means the bus cable is pierced directly, no separate bus tap needed.