White-Rodgers 57T01-843 Time Delay Control

The White-Rodgers 57T01-843 time delay control is a reliable single-stage blower time delay relay designed for Trane-style PSC inducer and blower systems. It keeps the blower running after the call for cooling ends, pushing residual cooled air into the conditioned space to improve system efficiency. Built as a direct OEM-style replacement, it restores factory-timed blower operation on compatible equipment.