Siemens 3SE6704-2BA Soft Starter System Module

Siemens 3SE6704-2BA is a rectangular, non-contact magnetic safety switch (sensor unit) from the SIRIUS 3SE67 family. It uses a magnetically actuated sensing element to detect the position of a mating actuator, enabling safe machine guarding without mechanical contact and is designed for use with corresponding 3SE67 actuators to form magnetic safety interlocks in safety circuits. The sensor housing is thermoplastic and provides IP40 protection, suitable for general industrial environments. As a standard-range rectangular sensor unit, this part number represents a single module intended for integration into safety circuits that monitor door or access-point position on automation equipment. Siemens positions this device as a compact, maintenance-friendly component for safety applications, offering dependable performance in routines where a non-contact interlock is preferred over traditional mechanical switches.