Hydrotherm BM-8785 Rollout Switch 321042-401 Featuring SPST contacts that break

Featuring SPST contacts that break on temperature rise

ensuring longevity in high-heat environments where standard plastic handles often fail

Optimized Load Distribution: Precision-ground balls and cages maintain radial clearance integrity under thermal expansion

ensuring accurate refrigerant metering and system efficiency

Hydrotherm BM-8785 Rollout Switch 321042-401 Featuring SPST contacts that breakThe Hydrotherm BM 8785 Rollout Switch is a critical safety component engineered for high temperature thermal protection in industrial and commercial heating systems. Designed as a 350F M R rollout switch, this device monitors combustion chambers and heat exchangers for dangerous flame rollout conditions. When temperatures exceed the 350F threshold, the precision snap action mechanism interrupts the electrical circuit, requiring a manual reset to