White-Rodgers 90-374 Relay

The White-Rodgers 90-374 Relay is a heavy-duty, SPDT fan relay engineered for versatile switching in high-voltage 208/240V HVACR systems. Designed for reliability in heating and cooling applications, this Type 184 relay features a completely enclosed, compact housing that ensures quiet operation and protection against airborne contaminants. With a 12.5 mA coil current and a resistance of 6050 Ohms, it provides efficient low-power consumption while managing substantial inductive and resistive loads. This unit serves as the direct replacement for White-Rodgers 90-364 and S1-3115A3301, allowing for seamless mechanical and electrical integration without the need for mounting modifications. The 1/4-inch quick-connect terminals facilitate rapid field wiring for contractors handling blower motor controls, heat pump duty, or general-purpose switching. Rated for 12 Amps inductive at 125 VAC and 8 Amps at 250 VAC, the 90-374 White-Rodgers is a standard truck-stock item for professional technicians requiring robust switching performance in any mounting position.

• Broad Compatibility: Functions as a universal 208/240VAC fan relay replacement for discontinued 90-364 and OEM S1-3115A3301 modules.
• Flexible Installation: Heavy-duty design is rated to operate in any orientation, making it ideal for tight control panels and varied furnace configurations.
• Enhanced Durability: The enclosed relay construction protects internal contacts, preventing arcing issues and extending the service life of the component.
• Industrial Ratings: Capable of handling up to 18 Amps resistive at 277 VAC, suitable for electric heat secondary limits and motor loads.

Is the 90-374 compatible with 120V control circuits?
No, this specific model is designed with a 208/240V coil. For 120V coil applications, the 90-370 or similar Type 184 variants should be utilized to match the control voltage.

How does this differ from the 90-364?
The 90-374 is the designated replacement for the 90-364. It maintains the same footprint and terminal spacing while providing the SPDT (Single Pole Double Throw) switching logic required for dual-load or fan-speed changeover circuits.

Can this relay be used for compressor switching?
While it can handle smaller inductive loads, always verify the Locked Rotor Amps (LRA) and Full Load Amps (FLA) against your motor's data plate to ensure it falls within the 12A inductive rating.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.