Key Features
Guard Locking Function: Incorporates a solenoid-based locking mechanism that physically prevents the guard door from being opened while machine hazards are present. The lock can only be released by a separate, safe control signal from the safety controller.

High Safety Integrity: Meets the requirements for the highest safety levels: Category 4, PL e, and SIL 3.

Coded Actuation System: Utilizes a unique, mechanically coded actuator (the -D250 suffix refers to this specific actuator type). This coding prevents defeat or tampering by using a standard screwdriver or other incorrect object, ensuring only the designated actuator can operate the switch.

Dual-Channel Output: Provides two separate, redundant N/O (Normally Open) safety contacts (mechanically linked), which are monitored by the safety controller to detect faults and ensure safe operation.

Forced-Break Guidance (Positive Opening): The safety contacts are designed to physically break the electrical circuit in a guaranteed way when the door is opened, even in the event of contact welding, ensuring functional safety.

Multiple Actuator Styles: The -D250 actuator is a common trapezoidal design, offering a robust and secure connection to the switch body.

Robust Metal Housing: Constructed from a zinc die-cast metal housing, making it highly resistant to mechanical impact, shock, and vibration.

3. Technical Specifications
Safety Rating: ISO 13849-1: PL e, Category 4 | IEC 62061: SIL 3

Contact Configuration: 2 N/O (Normally Open) safety contacts + 1 N/O monitoring contact for the lock status.

Locking Force: Typically > 2000 N (This high force resists deliberate forced opening).

Supply Voltage for Lock: 24 V DC (for the solenoid lock mechanism)

Operating Voltage for Contacts: 24...240 V AC/DC

Switching Current: e.g., 6 A

Mechanical Life: > 1,000,000 cycles

Connection: Fixed cable (The "D" in the actuator code often indicates a version with a fixed cable outlet).

Housing Material: Zinc die-cast

Ingress Protection Rating: Typically IP67 (Dust-tight and protected against temporary immersion) when installed with the correct gasket and actuator.