The D4NS is a labour saving and environmentally friendly safety door switch with separate actuator and make-before-break contacts (MBB). This interlock switch is ideal for use in applications with sliding, hinged and removable guards that need to be closed for operational safety.

Standardised gold-clad contacts for high contact reliability
Applicable to both standard loads and micro loads
Free of lead, cadmium, and hexavalent chrome, reducing the burden on the environment
Conforms to the Machinery Directive and Low Voltage Directive

Actuators are sold separately.

EN60947-5-1 (approved direct opening), UL508 CSA C22.2 No.14, GS-ET-15, GB14048.5, EN50047, EN1088.

TUV, UL, CCC, CSA.

This safety interlock switch is suited for applications where operational safety is crucial. With a robust resin housing and an IP67 rating, it protects against dust and moisture, making it appropriate for various industrial environments. The inclusion of 3NC safety contacts guarantees dependable operation and mitigates the risk of accidental machine activation, thereby enhancing workplace safety.

• Supports a maximum AC voltage of 240V for versatile applications
• M20 conduit entry allows for straightforward installation
• Handles up to 250V DC for a range of uses

• Suitable for machinery safety requiring interlock solutions
• Used in automated systems to improve operational safety
• Appropriate for control panels in industrial settings
• Useful in environments where protection from moisture and dust is essential

It is intended for industrial environments that demand resistance to harsh conditions, including moisture and dust.

The three normally closed contacts ensure that the device remains inactive until correctly positioned, preventing unintended operation.

Yes, the interlock design allows for dependable operation in applications where machinery is frequently activated and deactivated.

Ensure that the conduit entry is securely attached and that the switch is positioned to avoid accidental activation during machinery maintenance.

Interlock Switch