Rheem-Ruud 42-21593-02 Sequencing Relay As a primary furnace safety

As a primary furnace safety control

and MPR-581x actuators

the elastomers in this kit are selected for their chemical resistance to the standard lubricants and refrigerants used in York's centrifugal cooling equipment

This SPDT (Single Pole Double Throw) relay features a unique dual-coil input design

Rheem-Ruud 42-21593-02 Sequencing Relay As a primary furnace safetyFor service technicians managing multi stage electric heat or residential blower delays, the Rheem Ruud 42 21593 02 Sequencing Relay functions as a critical OEM control component. This 24V SPDT Sequencing Relay is engineered with a C65 95 timing specification, ensuring precise contact closure and opening cycles to prevent line side surges during startup. The device features a single pole double throw configuration, allowing for versatile field wiring