The Omron D4NL2CFGB is a solenoid-lock safety-door switch from the D4NL series, built to guard access on machinery with a monitored lock. It uses a key-actuated head that can be oriented in four directions, giving flexibility when mounting to a guard door. The switch contacts break before the solenoid releases, so the machine control sees the door-open signal before the lock actually opens — a sequence that matters for safety circuit integrity. Contact configuration is 1 normally-open plus 3 normally-closed. The NC contacts are the safety channel; the NO can serve as a lock-status feedback to the PLC. Switching capacity is 3 A at 240 V AC, or 270 mA at 250 V DC — enough for direct control of a safety relay or small contactor coil, but if you're driving a larger load, buffer it through an interface relay. Rated electrical life is 500,000 cycles, mechanical life 1 million cycles. That's solid for a production line running a few cycles per minute — expect years of service before contact wear becomes an issue, assuming the load stays within the rated switching current.
Environment and mounting
IP67 rating means the switch body and the head seal against dust and temporary water immersion — suitable for washdown areas in food processing or wet machining. The screw terminals accept 0.2–2.5 mm² wire; strip length around 8 mm keeps the conductor fully under the clamp without exposed strands. Dimensions are 88.5 mm wide, 95 mm tall, 35.5 mm deep — a compact footprint that fits standard guard-door profiles.
If you're sourcing for a new design, verify the actuator key type matches your door profile — the switch accepts a key actuator, not a separate solenoid driver.