Euchner STM Safety Interlock Switch

Core Performance & Industrial Application

The Euchner STM1A-242B024-M is an electromechanical safety interlock switch from the STM series. It adopts the closed-circuit current locking principle, equipped with metal actuating head and auxiliary release function. It monitors the closed state of machine protective doors and provides safety interlock signal output, preventing equipment startup when the safety door is open. It features robust housing, high mechanical service life and reliable positive opening contacts, widely used for personnel protection on automated machinery.

Technical Specifications

▶ Product type: STM safety guard locking switch, order no. STM1A-242B024-M

▶ Brand: Euchner

▶ Cable entry: M20 × 1.5

▶ Actuator head: Metal

▶ Unlocking method: Auxiliary release, closed-circuit current principle

▶ Max approach speed: 20 m/min

▶ Mechanical life: 2 × 10⁶ cycles

▶ Operating temperature: -25 °C to +70 °C

▶ Protection rating: IP67

▶ Net weight: approx. 0.468 kg

▶ Country of origin: Germany

▶ Compliance: CE

▶ Commodity code: 85365019

Industry Applications

Applied in machine tools, packaging equipment, automation production lines and robotic workcells for safety door interlock and guard position monitoring.

Note: Confirm actuator type and safety circuit configuration before ordering