Duelco – NST‑4 24 V DC (Part No. 42051244) – Emergency‑Stop / Safety Relay

The Duelco NST‑4 (42051244) is a robust, industrial‑grade safety relay designed for emergency‑stop and safety‑gate circuits. Powered by 24 V DC, it features force‑guided contacts, a compact DIN‑rail housing, and essential safety interlock functionality. This certified module is widely used in machine protection systems to meet Category 4 / PL e safety requirements.

Key Features:

• Model: NST‑4 (Duelco 42051244)  

• Brand: Duelco

• Supply Voltage: 24 V DC

• Safety Function: Emergency-stop and gate monitoring via safety relay module

• Contact Type: Force‑guided contacts (ensuring safe-state on failure)

• Mounting: Compact housing suitable for DIN‑rail installation

• Category: Industrial safety relay, commonly used in Category 4 circuits

• Applications: Ideal for E‑stop circuits, safety interlocks, light curtains, safety gates, and machine safety systems