The York S1-025-35381-000 Limit Switch is a critical HVAC safety control designed to monitor internal plenum temperatures and protect the heat exchanger from thermal stress

this unit features a shunt to maintain circuit continuity while switching the primary power leg

Can the T-4002-123 be used with 1/4" tubing

scale accumulation occurs rapidly

Contractors should verify the specific pressure rating on the existing failed switch

MARS 19167 Potential Relay The York S1-025-35381-000 Limit SwitchThe MARS 19167 Potential Relay (Model 167) is a precision engineered motor starting component designed for heavy duty HVACR applications. This 420V potential relay features a specific pickup voltage range of 300V to 328V and a dropout voltage of 60V to 121V, ensuring accurate capacitor cutout once the motor reaches sufficient speed. Built with a 35 Amp contact rating and a 50 60 Hz universal frequency range, it provides reliable switching for high