Banner Engineering SI-LS42DMI Safety Interlock Switch

The SI-LS42DMI is Banner Engineering's locking-style safety interlock switch with a solenoid-locking body and a Power Lock mechanism designed for guarded machine access. It operates from 24 V ac/dc (solenoid voltage) and offers a contact arrangement of 2 NC/1 NO for actuator safety contacts plus 1 NC monitor contact when the guard is locked. The interlock body measures 170 x 43 x 45 mm and uses a thermoplastic housing with an IP67 rating for rugged washdown environments. This unit is lockable and built for safeguarding safety circuits, providing up to 1500 N of extraction force to resist unauthorized opening. Electrical specifications include 24 V supply, 4.4 VA rated operating current, and 12 VA inrush (0.2 s), with a wiring-chamber connection and no in-series diagnostics. It carries PL e, SIL CL 3, and Cat 4 safety ratings, along with SISTEMA B10d of 2 million cycles, reflecting its suitability for high-integrity safety applications such as guarding doors and protective enclosures.