Omron D4NL-4FFA-B Guard Lock Safety Door Switch – 24VDC Solenoid, 2NC/1NO + 2NC, IP67

The Omron D4NL-4FFA-B is a guard lock safety-door switch engineered for advanced machine safety and interlocking protection. Featuring a mechanical lock with 24VDC solenoid release, it ensures reliable protection for personnel and equipment by preventing access to hazardous areas during machine operation.

This model includes 2NC/1NO door contacts and 2NC lock monitor contacts with a slow-action mechanism, providing secure safety feedback to control systems. Its IP67-rated plastic housing, M20 conduit entries, and 1300 N holding force make it ideal for use in demanding industrial environments.

Technical Specifications

Model: D4NL-4FFA-B Omron
Series: D4NL Guard Lock
Function: Guard lock safety-door switch
Actuator Type: Key-operated
Lock Type: Mechanical lock (Power to Unlock)
Solenoid Voltage: 24 VDC
LED Indicator: Yes (10–115 VAC/VDC)
Holding Force: 1300 N
Form Factor: Cuboid enclosure, M20 conduit entries
Connection Method: Screw terminals

Electrical Specifications

• Rated Solenoid Voltage: 24 VDC
• Rated Operating Voltage (LED): 10–115 VAC/VDC
• Contact Configuration: 2NC/1NO (door) + 2NC (lock monitor)
• Switch Action: Slow action
• Contact Type: Electromechanical
• Rated Insulation Voltage: 250 VAC

I/O & Communication Interfaces

• Door Contacts: 2NC / 1NO
• Lock Monitor Contacts: 2NC
• Actuator Type: Standard key (resin)
• Key Position: Bottom insertion
• Lock Logic: Power to unlock (mechanical lock)
• Communication: Not supported (hardwired safety device)

Mechanical Specifications

• Housing Material: Plastic
• Head Material: Plastic
• Shape: Cuboid
• Width: 88.5 mm
• Height: 35.5 mm
• Length: 95 mm
• Mounting: Adjustable head orientation
• Conduit Size: M20
• Number of Conduits: 2

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
• Application Category: Industrial machinery safety systems

Compliance & Certifications

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

Key Features & Benefits

✅ 24VDC Solenoid Release. Ensures safe mechanical unlocking during maintenance.

✅ 2NC/1NO + 2NC Contacts. Dual safety feedback for door and lock monitoring.

✅ 1300 N Holding Force. Reliable mechanical interlock for high-safety applications.

✅ IP67-Rated Housing. Durable protection against dust and water ingress.

✅ Adjustable Head. Flexible mounting orientation for different door configurations.

✅ M20 Conduit Entries. Easy wiring access for control panel integration.

📦 Order the Omron D4NL-4FFA-B from Drive Outlet Megastore

At Drive Outlet Megastore, we provide unbeatable Omron D4NL-4FFA-B prices, offering industrial-grade safety door interlocking solutions. Designed for dependability, precision, and full compliance with international safety standards.

Check stock now or request a quote.

Safety secured. Reliability guaranteed. Omron engineered — only at Drive Outlet Megastore.