Euchner STP4A-2131A024L024M electromechanical safety switch with guard locking, Order No. 091749, supplied with the metal actuator shown in the photos and an approximately 2 m connection cable.

Designed for industrial machine guarding applications, the STP safety switch monitors protective doors or guards and provides electrically operated guard locking. This version uses the open-circuit current / power-to-lock principle: the guard is locked when the guard locking solenoid is energized and unlocked by spring force when power is removed.

The switch incorporates an auxiliary release and two freely assignable LED indicators.

Specifications:

• Manufacturer: Euchner
• Model: STP4A-2131A024L024M
• Order No. / MPN: 091749
• Series: STP
• Type: Electromechanical Safety Switch with Guard Locking
• Guard Locking Principle: Open-circuit current / power-to-lock
• Solenoid Operating Voltage: 24 V AC/DC (-15% / +10%)
• Power Consumption: 8 W
• AC-15 Rating: 4 A at 230 V
• DC-13 Rating: 4 A at 24 V
• Thermal Rated Current: 4 A
• Rated Insulation Voltage Ui: 250 V
• Rated Impulse Voltage Uimp: 2.5 kV
• Guard Locking Force Fzh: 2000 N
• Maximum Locking Force: 2500 N
• Protection Rating: IP67
• Switching Principle: Slow-action
• Guard Lock Monitoring: 2 positively driven contacts + 1 NO contact
• Door Position Monitoring: 1 NC contact
• Cable Entries: 3 × M20 × 1.5
• Operating Temperature: -20°C to +55°C
• Mechanical Life: 1 × 10⁶ operating cycles
• Cable Length: Approx. 2 m

The metal actuator/key shown in the photos is included with this unit. The actuator carries the marking 120295; its exact catalog part number has not been independently confirmed.

The installed cable has a free, unterminated end with individual conductors, as shown in the photos.

Used, fully functional.