Omron D4SL-N Series Solenoid Interlock Switch, Power to Unlock

Omron D4SL-N Series Solenoid Interlock Switch, 24V DC Supply Voltage, IP67 - D4SL-N4PDA-D

This solenoid interlock switch is a safety-door device designed to secure guarded access points in industrial installations. It combines a power-to-unlock solenoid mechanism with monitored door and lock contacts to control access and signal status. The unit is intended for use where controlled locking, monitored release and integration with safety circuits are required, and it is suited to environments demanding sealed enclosures and recognised industrial approvals.

Features and Benefits:

• IP67 rated enclosure for protection in harsh environments
  24VDC solenoid consuming 4.8W for controlled unlocking
  Metal housing offering increased mechanical robustness
  Three NC safety contacts enabling monitored lock status
  M20 conduit entry with Terminal Block for secure wiring
  Contact rating of 1.5A for common control circuits

Applications

• Used with safety Gates requiring monitored lock function
  Suitable for factory guarding with powered release sequence
  Ideal for integration into safety relay and PLC circuits
  Can be used on aluminium-framed access panels
  Appropriate for machinery guards needing direct-opening monitoring

What supply and power behaviour does the unit require?

It requires a 24V DC supply and applies a starting current for about 10 s before switching to a constant current with approximate power consumption 4.8W during operation.

How are status and control signals provided for safety systems?

The device provides separate door monitor and lock monitor contacts, Plus three NC safety contacts, enabling detection of door insertion, lock engagement and feedback into safety circuits.

What wiring and conduit considerations are specified?

The unit uses a Terminal Block connection with an M20 conduit entry, connector cables are available separately and a recommended conversion adaptor is supplied for 1/2-14NPT where required.

Which standards and certifications apply to its use?

It meets EN 60947-5-1 and GB 14048.5 and has UL 508 and CSA C22.2 approvals among listed certified standards.

What mechanical performance characteristics affect installation?

The interlock provides a minimum holding force of 1300 N, direct-opening force ≥60 N, and is designed for an operating temperature range of −10 to 55 °C.

Notes

Actuators sold separately.

Standards

EN60947-5-1 (certified direct opening), UL508, CSA C22.2 No.14, GB14048.5, EN60947-5-1.

Approvals

TÜV SÜD , UL, CQC (CCC), KOSHA.