Simplified Diagnostics: Integrated LED status light provides clear troubleshooting codes for faster field diagnostics

As a direct replacement for the ZR32K3 series

ensuring the HVAC expansion device performs under high-demand commercial HVAC maintenance cycles without hunting or premature failure

making it an ideal Carrier replacement part for systems with higher accessory loads or multiple relays

you know that structural integrity in the heat transfer surface is non-negotiable

Supco SHL506 Limit Switch 318973-401 Simplified Diagnostics: Integrated LED statusThe Supco SHL506 Limit Switch is a high performance HVAC furnace limit control engineered for precise thermal protection in residential and commercial heating systems. This plenum thermostat features a fixed open temperature of 170F and a fixed close temperature of 130F, providing a reliable 40F differential to prevent heat exchanger overheating. With its SPST normally closed circuit and auto reset functionality, the SHL506 ensures seamless operation