Pay in 4 interest-free payments of $5.54 Learn more
Ships within 48 hours · Estimated delivery Sep 17 - Sep 22
meeting the NFPA 72 requirement for sampling tubes to extend across at least 2/3 of the duct width for reliable smoke detection
Enhanced Durability: Zinc plated steel construction prevents oxidation and mechanical wear in rigorous HVAC environments
Can I swap a 230F manual reset with an auto-reset switch
or the Klixon protector tripping repeatedly due to a failed internal contact point
Reznor 57953 Limit Switch meeting the NFPA 72 requirementEnsure your commercial heating units operate within safe thermal parameters with the Reznor 57953 Limit Switch. This L170 40F limit control is a precision engineered OEM replacement part designed to monitor discharge air temperatures and prevent heat exchanger damage. In the field, reliability is paramount; this switch features a fixed 170F trip point and a 130F reset differential (40F drop), making it a critical safety component for Reznor gas fired
