Description:

The Omron D4NL-1DFA-B guard lock safety door switch is used in industrial safety systems to monitor and control access to hazardous machine areas with interlock functionality. Commonly installed in safety gates, robotic cells, packaging machines, and automated production lines requiring secure guard locking and access control. Maintenance teams and system integrators use this part for replacement, retrofit, and ensuring compliance with machine safety standards.

Applications:

The Omron D4NL-1DFA-B safety door switch is used in industrial environments where controlled access to machinery is critical for operator safety. It is applied in robotic work cells, conveyor systems, assembly lines, and packaging equipment to prevent machine operation when safety guards are open, ensuring safe maintenance access and compliance with industrial safety requirements.

Technical Specifications:

• Manufacturer: Omron
• Part Number: D4NL-1DFA-B
• Product Type: Guard Lock Safety Door Switch
• Contact Configuration: 2NC + 1NO (typical)
• Locking Mechanism: Solenoid guard lock
• Operation Mode: Power-to-lock / power-to-release (model dependent)
• Rated Voltage: Up to 240 VAC / 250 VDC
• Rated Current: Up to 3 A (resistive load)
• Actuator Type: Key actuator
• Mounting Type: Chassis mount
• Connection Type: Terminal block
• Protection Rating: IP67
• Operating Temperature: -10°C to +55°C
• Housing Material: Metal head with durable plastic body

Common Replacements:

• Omron D4NL-2DFA-B Safety Door Switch
• Omron D4SL-N2DFA Guard Lock Safety Switch
• Omron D4NS-1DF Safety Door Switch