Resideo RC840T-120 Electromechanical Relay 321894-709 OEM Reliability: As a genuine

OEM Reliability: As a genuine Modine 5H0798020000 part

or discharge air temperature sensing in high-humidity ducts

Key Benefits Dual-Purpose Protection: Relieves overpressure caused by both thermal expansion during normal cycles and over-firing conditions due to control failure

External Equalization: Critical for high-tonnage systems to ensure accurate sensing of evaporator outlet pressure

providing the necessary structural integrity to secure the 1-core block within the DCR housing

Resideo RC840T-120 Electromechanical Relay 321894-709 OEM Reliability: As a genuineThe Resideo RC840T 120 Electromechanical Relay with a built in 24V transformer is a critical component for integrating line voltage equipment into low voltage control systems. This switching relay operates on a 120 Vac input and provides a 24V, 40 mA, 1. 2 VA control signal, making it the industry standard for controlling electric baseboard heaters, resistive cooling loads, and inductive fan motors. The unit features an internal transformer that