Omron D4NS Series Solenoid Interlock Switch Power to Lock/Unlock

Omron D4NS Series Safety Interlock Switch, IP67, Resin Housing - D4NS-9BF

This safety interlock switch is a compact, resin-bodied device designed to monitor access to guarded machinery and interrupt power when a guard is opened. It is intended for industrial control panels and machine safety systems where a durable, sealed interlock is required, and it connects via an M12 Terminal for simplified installation and replacement.

Features & Benefits

• Two safety NC contacts ensure fail-safe circuit interruption
  IP67-rated enclosure permits use in dusty or wet interiors
  Rated for 110V AC switching and 250V DC switching capacity
  Power-to-lock/unlock function supports controlled access mechanisms
  500,000 electrical operations durability for resistive 3A loads
  M12 connector reduces wiring time and eases field replacement

**Applications**

• Suitable for machine-guard monitoring in automated assembly lines
  Ideal for safety circuits requiring direct-opening NC contacts
  Used with control panels in electronics manufacturing environments
  Can be used for interlocking access on mechanical presses and conveyors

What contact arrangements are provided for safety circuits?

The unit includes two normally closed safety contacts configured for direct-opening operation and two auxiliary contacts available for control logic.

How does the device perform under vibration and shock?

It meets specified resistance levels with malfunction tolerance to 10–55 Hz at 0.75mm amplitude and shock-malfunction resistance of 300 m/s2.

What insulation and dielectric performance can be expected?

The rated insulation voltage is 300 V with impulse withstand values up to 6kV between terminals and uncharged metallic parts.

Notes

Actuators are sold separately.

Standards

EN60947-5-1 (approved direct opening), UL508 CSA C22.2 No.14, GS-ET-15, GB14048.5, EN50047, EN1088.

Approvals

TUV, UL, CCC, CSA.