Aprilaire 4977 Relay 322838-752 monitoring the common circuit to

monitoring the common circuit to detect excessive current draw or high internal temperatures that could lead to winding failure or a locked rotor condition

Simplified Troubleshooting: Features clear diagnostic paths for testing multi-stage electric heating circuits and verify proper relay engagement

delivering a

Optimized Efficiency: Delivers a consistent 31

8 Cv rating and brass trim

Aprilaire 4977 Relay 322838-752 monitoring the common circuit toThe Aprilaire 4977 Relay is a high performance 24v Coil DPDT Relay designed for seamless integration within advanced HVACR systems. This versatile double pole double throw relay serves as a critical HVAC control component, allowing for the simultaneous management of two independent circuits. Engineered for Aprilaire humidifiers and air cleaners, this 24 volt switching relay ensures precise electrical isolation and reliable secondary hardware