Industrial Build Quality: Built with high-capacity 2-pole snap-action switches to handle resistive heating loads without premature failure

Fail-Safe Logic: Mechanical spring return ensures the unit reaches its safety position during power interruptions

This OEM replacement part is engineered for use with FE

the 203541 and 203541/U are functionally and physically identical in terms of pinout and industrial specifications

it utilizes a top-guided stem and non-sticking disc-to-seat arrangement to ensure reliable opening and reseating under demanding thermal conditions

Loren Cook 778531 Belt Tensioner 321894-706 Industrial Build Quality: Built withThe Loren Cook 778531 Belt Tensioner is a critical OEM replacement part engineered to maintain precise drive belt tension in commercial HVACR systems. Designed for heavy duty fan and blower assemblies, this automatic tensioner utilizes a internal spring mechanism to eliminate belt slippage and reduce vibration during startup and continuous operation. As a veteran grade HVAC drive component, it facilitates optimal power transmission between the motor