White-Rodgers 90-372 Relay

The White-Rodgers 90-372 Relay is a specialized 120V SPDT heavy-duty enclosed relay designed for high-demand HVAC switching and power control applications. As a core component of the Type 184 series, this line-voltage relay features a 120 VAC coil and is rated for a 18A resistive load at 277 VAC, making it an ideal choice for fan motor control and general-purpose pilot duty. Its compact, totally enclosed design protects internal silver-alloy contacts from environmental contaminants, ensuring consistent arc suppression and operational longevity in dirty or high-vibration mechanical rooms.

For technicians in the field, the 90-372 offers versatile installation options with its universal mounting bracket, allowing it to operate in any orientation. The 1/4" quick-connect terminals simplify field wiring, while the low-consumption 120V coil (2000 Ohms resistance) minimizes parasitic power draw on the control circuit. This relay is a standard replacement for high-induction loads and Type 184 fan relays found in light commercial air handlers and furnace control boards.

• Heavy-Duty Contact Rating: Supports 18A resistive and 8A inductive current, suitable for HVAC power relay applications.
• Environmental Protection: The totally enclosed design prevents dust and debris from fouling the SPDT contacts.
• Universal Mounting: Compact footprint allows for installation in narrow electrical enclosures and operates in any position.
• Reliable Switching: Quiet operation and silver alloy contacts provide dependable cycling for continuous duty cycles.

• What are the coil specifications for the 90-372? This model uses a 120 VAC, 50/60 Hz coil with a DC resistance of approximately 2000 Ohms.
• Can this relay replace a Type 184 fan relay? Yes, the 90-372 is a heavy-duty Type 184 replacement often used for fan speed control and blower motors.
• What are the contact configurations? It features a Single Pole Double Throw (SPDT) arrangement with 1/4" male spade terminals for quick connection.

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.