Universal Surface Mount: Standard flat-back design fits securely against the water heater tank surface for accurate temperature sensing

The integrated stainless steel strainer protects the internal disc from fouling due to system scale or debris

Enhanced Seat Integrity: Features a PTFE-coated EPDM O-ring and chrome-plated seating for superior leak resistance and durability

High-Capacity Switching: 25 Amp resistive load rating handles heavy commercial heating elements without premature contact wear

Lochinvar & A.O. Smith 100157720 Switch 326058-758 Universal Surface Mount: Standard flat-backThe Lochinvar & A. O. Smith 100157720 Switch is a critical safety component designed for high performance hydronic systems. This Adjustable High Limit control features a Manual Reset (M R) mechanism, ensuring that the system remains locked out if temperatures exceed the predetermined safety threshold until a technician can perform a diagnostic check. Engineers and field contractors rely on the 100157720 limit switch for its precision in monitoring