Omron D4NH Safety Rated Interlock Switch, Hinge Actuator Included, Plastic, Hinge

Omron D4NH Series Safety Rated Interlock Switch, 240V Contact AC Voltage, IP67 - D4NH-4BBC

This safety-rated interlock switch is a Compact hinge-lock device designed to stop machinery when protective doors open, providing a sealed, plastic-housed safety switching solution for industrial automation environments. It is intended for mounting where space is limited and a four-direction head orientation is required, supporting both AC and DC control circuits.

Features & Benefits

• IP67 ingress protection ensures operation in wet conditions
  Accepts M20 conduit for European installations
  Switch contacts rated for 240V AC and 250V DC
  Slow-action contacts with direct-opening NC protection
  Operates between -30°C and 70°C for varied environments
  Snap/slow-action durability up to 500000 electrical operations

Applications

• Suitable for safety guarding on machine access doors
  Ideal for integration into production-line interlock circuits
  used with safety equipment requiring forced NC separation
  Can be used for retrofit of space-constrained control panels
  Suitable for systems needing a four-direction head orientation

What cable-entry options are available for installation?

This model accepts an M20 conduit opening and is compatible with a range of conduit adaptors to suit regional connector types.

How does the mechanism ensure safety when contacts stick?

The built-in direct-opening mechanism forces NC contacts open in the event of metal deposition, ensuring circuit separation.

What electrical switching capacity should be observed?

The contacts can switch resistive loads up to 3A at 240V AC
higher short-term make currents are possible but follow rated limits.

How should the actuator be mounted to avoid mechanical stress?

Align the shaft rotational centre with the door and secure the actuator with a one-way screw so forces do not exceed recommended limits.