this is a 1-pole unit with a shunt

Robust diaphragm construction designed to withstand the high-cycle demands of residential and light commercial HVAC applications

8 FLA at 120V AC

Reliable Overheat Protection: Critical for systems experiencing furnace 4 red flashes or 11-flash error codes related to limit circuit issues

Engineered as a direct replacement for OEM HVAC capacitors

Weil McLain 510-312-209 Temperature Control Els PW 17895 this is a 1-pole unitThe Weil McLain 510 312 209 is a field proven High Limit Temperature Control engineered for critical hydronic safety in residential and commercial boiler systems. Designed specifically for the Weil McLain EG, EGH, LGB, MGB, and SGO boiler series, this SPST aquastat provides reliable over temperature protection. It operates on an automatic recycle logic, ensuring that the system restarts without manual intervention once water temperatures return to