SKU: D4SL-N4EFA-DN

Omron D4SL-N4EFA-DN Safety Door Switch with Lock

Omron D4SL-N4EFA-DN is a safety door switch with solenoid guard lock for machine safety interlocks requiring guard locking.

USD 68.00 per unit, volume discounts available

  • In stock, ships in 24h
  • 100% genuine Omron
  • 1-year manufacturer warranty
  • Worldwide delivery

Key Features

  • Integrated safety door monitoring with electromagnetic lock
  • 24VDC operation for standard safety control circuits
  • Designed for machine guarding and controlled access systems
  • Helps enforce safe-stop and lock-release safety sequences
  • IP67-rated durability for industrial environments
  • Suitable for OEM machine safety and retrofit guarding upgrades
01 / Overview

Guard Door Interlock and Locking Control for Machine Safety

The D4SL-N4EFA-DN provides both guard position monitoring and lock control in one safety component, helping prevent hazardous access during machine operation. It is used in packaging, robotics, and industrial equipment where safety standards require monitored guard locking behavior. Its robust design supports stable performance in demanding environments and simplifies safety circuit integration.

Typical Applications

  • Interlocking access doors on automated machinery
  • Controlling guard lock release after safe-stop confirmation
  • Protecting robotic cells with monitored guard access
  • Implementing safety compliance in packaging equipment
  • Upgrading non-locking guards to controlled-locking systems
  • Standardizing safety switch hardware in OEM machine platforms

Buying Checklist

  • Combines guard monitoring and locking in one device
  • Supports stronger machine safety architecture compliance
  • IP67 design handles demanding industrial conditions
  • Improves controlled access workflow during operation
  • Reliable long-term component for safety-critical applications
02 / Specifications

Technical Specifications

Technical specifications for Omron D4SL-N4EFA-DN Safety Door Switch with Lock
ModelD4SL-N4EFA-DN
SeriesD4SL
TypeSafety Door Switch with Guard Lock
Contact FormMultiple NC + NO
Lock TypeSolenoid release
Lock Force1300N
Direct OpeningYes (NC contacts)
Protection RatingIP67
Operating Temperature-25 to +55°C
Safety CategoryCategory 4, PL e
SILSIL 3
CertificationsCE, TUV, UL, CSA
03 / FAQ

Frequently Asked Questions

What safety rating does this switch provide?

Category 4, PL e and SIL 3 when used in properly designed safety circuit. Highest safety rating for guard locking applications.

How does the guard lock work?

Solenoid release: guard locks automatically when closed. Solenoid must be energized to release lock. Prevents access while machine is running.

What's the lock force?

1300N holding force. Prevents forced entry while guard is locked.

What applications require guard locking?

Machines with hazardous motion that continues after stop command (flywheel, robot, spindle). Guard must remain locked until motion stops.

Need D4SL-N4EFA-DN pricing or lead time?

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