Engineered from high-grade aluminum

Whether you're working with Type K

the switch closes to resume standard heating cycles

precision quad rings

Common Questions How do I prevent damage during installation

Rheem-Ruud 42-19737-01 Sequencing Relay Engineered from high-grade aluminumThe Rheem Ruud 42 19737 01 Sequencing Relay is a critical HVAC control component engineered for precise load management in electric furnaces and heat pump systems. As a 24V DPST NO sequencing relay, this unit utilizes Double Pole Single Throw Normally Open logic to staged start heating elements or blowers, preventing the excessive amperage spikes typically associated with simultaneous equipment activation. Designed as a direct OEM replacement part, it