Siemens 3SE5122-1QV10 Safety Interlock Switch

Siemens 3SE5122-1QV10 is a SIRIUS safety interlock switch designed for guarding machine doors and access points, featuring a durable metal enclosure and a separate actuator. It provides 1 normally open (NO) and 2 normally closed (NC) contacts, accompanied by two status LEDs for clear on‑panel feedback, all powered from 24 V DC. The unit ships with a keyed actuator and supports top‑ and side‑entry wiring through three M20 x 1.5 threaded entries, offering flexible installation in compact panels. Built for safety circuits that require reliable door‑position monitoring, this slow‑action switch is suitable for applications where robust signaling and fail‑safe interlock operation are essential, with five directions of actuation to accommodate multiple guard approaches.

• Contacts: 1 NO, 2 NC
• LED indicators: 2 (yellow/green) for status and safety signaling
• Actuator: Keyed actuator included
• Enclosure: Metal, 56 mm (device width)
• Wiring: Top and side entry; three M20 x 1.5 conduit entries
• Supply/ signaling: 24 V DC
• Approach: 5 directions of actuation