Honeywell AT20A1123 Transformer This high-limit safety switch is

This high-limit safety switch is the direct professional solution for maintaining system integrity and meeting strict HVAC safety control specifications without risk of early failure from poor calibration

preventing slippage and ensuring accurate setpoint selection

Packing Spring

Testing the sensor for continuity at specific temperature points is the standard diagnostic procedure

Honeywell AT20A1123 Transformer This high-limit safety switch isAs an experienced HVAC technician, you know that finding a reliable power source for 24 VAC control systems is critical for minimizing callbacks. The Honeywell AT20A1123 Transformer is a heavy duty, step down solution engineered to convert 120V primary voltage to a stable 24V or 26. 5V secondary output. This 19VA HVAC transformer is a versatile "universal" component, frequently used to power thermostats, gas valves, and relays in residential and light