Omron D4SL-N4EFA-D Guard Lock Safety Door Switch – 24VDC Solenoid Release, 2NC/1NO + 1NC/1NO, IP67

The Omron D4SL-N4EFA-D is a durable guard lock safety-door switch designed to provide reliable operator protection and secure machine guarding. Featuring a mechanical lock with power-to-unlock logic and a 24VDC solenoid release, it ensures access is only permitted when machinery is in a safe state.

Equipped with dual contact sets — 2NC/1NO door contacts and 1NC/1NO lock monitor contacts — the D4SL-N4EFA-D offers redundancy for advanced safety circuits. Its resin head, plastic housing, and IP67 protection rating make it suitable for harsh industrial environments, while the M20 conduit entry and terminal block connection simplify installation.

Technical Specifications

Model: D4SL-N4EFA-D Omron
Series: D4SL-N Guard Lock
Function: Guard lock safety-door switch
Actuator Type: Key-operated
Lock Type: Mechanical lock (Power to Unlock)
Solenoid Voltage: 24 VDC
Holding Force: 1300 N
LED Indicator: Integrated (status indication)
Form Factor: Cuboid enclosure, M20 conduit
Connection Method: Terminal block
Ideal For: Machine guarding, conveyor safety, packaging, and robotics applications

Electrical Specifications

• Rated Solenoid Voltage: 24 VDC
• Contact Configuration: 2NC/1NO (door) + 1NC/1NO (lock monitor)
• Switch Action: Slow action
• Rated Insulation Voltage: 250 VAC
• Contact Type: Redundant electromechanical safety contacts
• LED Indicator: Power and lock status indication

I/O & Communication Interfaces

• Door Contacts: 2NC/1NO
• Lock Monitor Contacts: 1NC/1NO
• Lock/Release Key Type: Standard metal key
• Key Position: Front and back insertion
• Lock Logic: Power to unlock (mechanical lock with solenoid release)
• Communication: Hardwired safety circuit (no network interface)

Mechanical Specifications

• Housing Material: Plastic
• Head Material: Resin
• Shape: Cuboid
• Width: 39 mm
• Height: 39 mm
• Length: 179.9 mm
• Mounting: Adjustable head orientation (multi-directional)
• Conduit Size: M20
• Number of Conduits: 1
• Connection Type: Terminal block (screw terminals)

Environmental Specifications

• Operating Temperature: -10°C to +55°C
• Storage Temperature: -25°C to +65°C
• Humidity: 5–95% RH (non-condensing)
• Protection Rating: IP67
• Vibration Resistance: 10–55 Hz, 1.5 mm double amplitude
• Shock Resistance: 500 m/s², 3 times each axis
• Application Category: Industrial safety and automation systems

Compliance & Certifications

• CE Marked: Yes
• UL / cUL Listed: Yes
• TÜV Certified: Yes
• EN ISO 14119 Compliant: Yes
• Standards: IEC/EN 60947-5-1, IEC/EN 60947-5-3

Key Features & Benefits

✅ 24VDC Solenoid Release. Power-to-unlock design ensures door security during machine operation.

✅ Redundant Safety Contacts. Dual circuits for door and lock monitoring.

✅ 1300 N Holding Force. Provides strong mechanical retention.

✅ IP67 Protection. Resistant to dust, water, and industrial contaminants.

✅ Integrated LED Indicator. Clear visual status of lock condition.

✅ M20 Conduit Connection. Simplifies wiring in industrial panels.

📦 Order the Omron D4SL-N4EFA-D from Drive Outlet Megastore

At Drive Outlet Megastore, we offer unbeatable Omron D4SL-N4EFA-D prices, supplying reliable and compliant interlock safety switches for modern automation systems. Compact, secure, and built for long-term industrial performance.

Check stock now or request a quote.

Safety assured. Access controlled. Omron precision — only at Drive Outlet Megastore.