you must never replace a 440V unit with a 370V unit

the "U" designation typically refers to retail or universal packaging

non-corrosive plastic for long-term reliability in wet environments

the 661057R is specifically sized (#57) for Liquid Propane (LP) applications

offering superior dielectric strength compared to lower-rated alternatives

Nordyne 626422R Limit Switch you must never replace aThe Nordyne 626422R Limit Switch is a critical safety component designed for furnace rollout protection in gas fired and oil fired HVAC systems. This thermal limit switch is engineered to open the circuit at a 155F cut out temperature, immediately interrupting the gas valve circuit if flame rollout or excessive heat is detected near the burner box. As a manual reset rollout switch, it requires a technician to physically inspect the heat exchanger and