Schmersal – AZ 16 ZVRK‑M20 – Safety Interlock Switch, 1 NO + 1 NC, IP67, 3× M20

The Schmersal AZ 16 ZVRK‑M20 is a robust electromechanical safety interlock switch featuring a durable thermoplastic housing, separate actuator, and universal coding. Rated for up to 4 A at 230 V AC (or 4 A at 24 V DC), it offers high protection with IP67 sealing and compliance with IEC 60947‑5‑1 and EN ISO 14119 safety standards—ideal for guard doors and accessibility-sensitive machinery.

 Key Features & Specifications

• Model / P/N: AZ 16 ZVRK‑M20 (1 NO + 1 NC safety contacts with latching)  

• Contact Configuration: 1 normally open (NO) + 1 normally closed (NC) electromechanical; silver-plated for low current reliability ()

• Electrical Ratings:

  • AC: up to 230 V AC at 4 A

  • DC: up to 24 V DC at 4 A  

• Mechanical Durability: >1,000,000 cycles; latching force 30 N; IP67 protection  

• Enclosure: Self-extinguishing, glass-fibre reinforced thermoplastic; dimensions 52×90×30 mm; double-insulated  

• Cable Entries: Three M20×1.5 threaded ports for flexible wiring  

• Environmental: -30 °C to +80 °C operating range; resistant to soiling and vibration; universal key coding  

• Certifications: CE, UL/cUL, CCC; meets EN ISO 13849‑1, ISO 14119, IEC 60947‑5‑1, AC‑15 usage