Description
The York S1-S90-342 Relay Switch is a 50/60Hz electrical control part designed for switching circuits in HVAC systems. It operates with a double-pole double-throw configuration, allowing it to control multiple circuit paths using a low-voltage control signal while switching higher-load circuits rated for applications. The 208-240V coil energizes the internal switching mechanism at standard line frequency, ensuring compatibility with the commercial and residential power supplies. Installed in control panels, air handlers, and condensing equipment, it operates as a switching control component that manages electrical load distribution and system operation.









