Built from 1/2 inch steel with a durable protective coating

including lead

it features a durable sleeve bearing design and a Permanent Split Capacitor (PSC) configuration for high starting torque and consistent efficiency

Professionals should refer to the original heater wiring diagram to ensure the safety limit is integrated correctly into the control string

Laars Heating Systems R0023000 Limit Switch 321042-401 Built from 1/2 inch steelThe Laars Heating Systems R0023000 Limit Switch is a critical safety component engineered to provide overheat protection for high performance hydronic and pool heating systems. This 150F high limit switch is calibrated to automatically interrupt the electrical circuit when internal water temperatures exceed the 150F threshold, effectively preventing thermal damage to the heat exchanger and downstream piping. As a veteran grade OEM replacement part,