Banner Engineering SI-LS42DMMJF 47900 Interlock Switch

The SI-LS42DMMJF (Banner part 47900) is a solenoid‑locking safety interlock switch in Banner Engineering’s SI‑LS42 family, designed to secure access doors on machinery and enforce positive opening of guarded spaces. It uses a 24 V AC/DC solenoid to lock the actuator (Power Lock) with a flexible inline actuator and a rugged thermoplastic housing rated IP67 for washdown environments. The switch provides three safety contacts (3 NC) plus one monitor/locked contact (1 NC), with a wiring‑chamber connection and dimensions of 170 × 43 × 45 mm. It operates from -25°C to 70°C and carries Cat 4 safety, PL e, and SIL CL 3 ratings, with SISTEMA B10d = 2 million. Electrical characteristics include 4.4 VA operating current, 12 VA inrush (0.2 s), and a mechanical life of 1 million cycles; the device is washdown‑rated, lockable, and lacks a quick‑disconnect feature. The solenoid voltage is 24 V AC/DC, and the actuator head can be rotated in 90° increments for horizontal or vertical actuation, with a minimum hinged door size of 150 mm and an extraction force of 1500 N to resist door opening forces.