providing a reliable pilot-operated shift that technicians rely on when troubleshooting units that are stuck in one mode or demonstrating bypass across the discharge and suction ports

Durable Construction: Features a bronze body and stainless steel internal components to prevent scale and corrosion

High Current Rating: 40 Amp capacity ensures the power circuit handles compressor start-ups without contact welding

in milder climates or specific applications

by monitoring the heat generated by the increased current in the remaining phases

Siemens Building Technology ASK791.165 Fusible Link 318973-401 providing a reliable pilot-operated shiftThe Siemens ASK791. 165 is a precision engineered 165F electrical fusible link designed for integration with UL listed fire and smoke control damper actuators. Built specifically for the OpenAir GJD series, this heat responsive device serves as a critical fail safe within commercial HVAC ventilation systems. When ambient duct temperatures exceed the 165F (74C) threshold, the sensor interrupts power to the actuator, allowing the internal spring return