Schmersal AZM 170-02ZRKA Solenoid Safety Interlock Switch

Schmersal AZM 170-02ZRKA is a solenoid‑operated safety interlock switch designed to secure access doors on industrial machinery by latching the door closed until the guarding system confirms safe conditions to unlock. Coil voltage for this variant is 24 VAC/DC, and it provides two normally closed (2NC) contacts for safety signaling. The unit includes an actuator (B1) and an M12 x 1 cable gland connector, with gold‑plated contacts for durable signaling. As part of the AZM 170 family, it supports multiple coil voltages across variants (including 24 VAC/DC, 110 VAC, and 230 VAC) and offers both power‑to‑lock and power‑to‑unlock configurations depending on the specific model. Common applications include safeguarding access to dangerous machinery where a door interlock is required to prevent restart until the door is fully closed.