Markel Products Co. 57640004 Limit 320788-703 The 30A normally closed contacts

The 30A normally closed contacts are rated for HVACR compressors up to 5 HP

preventing nuisance trips and premature motor wear in commercial heating applications

60" PF ensure proper differential sensing for low and high-fire operation

Key Benefits Direct Mount Integration: Mounts directly to the system piping via a 1/4 inch SAE female flare nut

Markel Products Co. 57640004 Limit 320788-703 The 30A normally closed contactsThe Markel Products Co. 57640004 is a critical safety component designed for professional grade thermal management. This L300F Auto Reset Limit Switch is engineered to open the circuit at a fixed temperature of 300F (149C), providing essential over temperature protection for heating elements and internal components. As an auto reset limit, the device automatically restores electrical continuity once temperatures drop back to a safe operating range,