Guard-locking door switch in plastic housing The D4NL guard-lock safety door switches are available with four or five built-in contacts. When locked, they have a key holding force of up to 1300N. Mechanical lock/solenoid release types and vice versa set up the complete range in combination with various conduit types, e.g. M20.

Guard-locking door switch in plastic housing. The D4GL guard-lock safety door switches are available with four or five built-in contacts. When locked, they have a key holding force of up to 1000N. Mechanical lock/solenoid release types and vice versa set up the complete range in combination with various conduit types, e.g. M20.

Guard-locking door switch in metal housing The D4BL guard-lock safety door switches are available with three built-in contacts. They are mechanically locked when the key is inserted and have a solenoid release. An auxiliary release key ensures easy maintenance and unlocks the door in case of power failure.