Elevator Switches TR231 & ZR236, Manual Travel Limit Switch TR236-11Yr-1881, And Buffer

The TR236-11Yr-1881 is an automatic-reset limit switch widely used on escalators and elevators, serving as a safety monitoring component for buffer, tension pulley, and safety gear circuits. It features a 1NO+1NC contact configuration, silver contact points, and stable switching performance.

The thermoplastic housing offers good oil resistance and impact resistance, adapting to long-term continuous operation in elevator shafts and escalator truss spaces. Once triggered, it immediately cuts off the safety loop to stop the equipment and avoid mechanical collision risks.

• Automatic-reset limit switch designed for escalator and elevator safety circuits
• 1NO+1NC contact configuration with silver contact points for reliable switching
• Thermoplastic housing with oil resistance and impact resistance
• Immediate safety loop cutoff upon activation to prevent mechanical collision
• Compatible with many mainstream escalator brands
• Supports fast on-site installation without complicated adjustment

This safety switch is a consumable part for elevator maintenance. Common faults include contact burnout, poor conduction, and actuator jamming caused by long-time vibration and dust accumulation. Timely replacement helps guarantee the validity of the safety chain.

It is one of the standard spare parts for elevator service and overhaul projects, and is compatible with many mainstream escalator brands for fast on-site installation.