Durable Construction: High-impact plastic housing protects sensitive bimetal elements from physical damage and tampering

For contractors dealing with frequent water heater or boiler service calls

This OEM York replacement part features an automatic reset mechanism designed to protect the heat exchanger and internal components from high-limit conditions

Common Questions & Technical Support Is the 20403301 a direct substitute for the 20403302

This relay typically utilizes the SR3P-05 or SR3P-06 series sockets for DIN rail or surface mounting

TB Woods 4JE Insert Durable Construction: High-impact plastic housingThe TB Woods 4JE flange insert is a single piece, solid construction EPDM sleeve specifically engineered for Sure Flex Plus size 4 couplings. This high performance elastomer provides excellent torsional flexibility and is designed to handle angular misalignment, parallel offset, and axial movement in power transmission systems. As a veteran grade elastomeric coupling insert, the 4JE is ideal for applications involving high humidity or atmospheric