White-Rodgers 90-380 Relay

The White-Rodgers 90-380 is a heavy-duty, 24V enclosed fan relay designed for demanding HVAC switching applications. This Type 184 relay features a SPNO/SPNC (Single Pole Normally Open/Normally Closed) contact configuration, allowing for versatile control of fan motors, solenoids, and heating/cooling circuits. Engineered for continuous duty, it operates reliably at a coil voltage of 24 VAC (50/60 Hz) and provides 1/4" quick-connect terminals for efficient field installation. The compact, totally enclosed design protects internal components from dust and debris, ensuring consistent performance in both residential and commercial climate control systems. This unit is the professional standard for technicians requiring a durable inductive load relay capable of handling up to 12 Amps at 125 VAC and 8 Amps at 250 VAC. It serves as a universal HVAC relay, providing a high-reliability solution for general-purpose switching across various equipment brands.

Key Benefits

• Universal Compatibility: Direct replacement for 9400-13Q152, 621867, 621867R, 01-0157, S1-S90-380, and 620537.
• Heavy-Duty Construction: Rated for high-inrush loads with a mechanical life of 1,000,000 operations, making it ideal for frequent fan motor switching.
• Flexible Mounting: The Type 184 enclosed design allows for operation in any position, simplifying retrofits in tight control cabinets.
• Technical Reliability: Features Class B insulation and a quiet, economical solenoid design that minimizes chatter during operation.

Common Questions

What is the difference between SPDT and the SPNO/SPNC configuration on this relay?
While often used for similar tasks, this relay provides specific SPNO and SPNC terminals, allowing you to control two separate circuits (one normally open, one normally closed) from a single 24V coil signal. This is ideal for switching between heating and cooling stages.

Can the White-Rodgers 90-380 replace a common RBM 184 relay?
Yes, the 90-380 is a direct RBM Type 184 equivalent. It matches the standard pinout and electrical ratings, making it a drop-in replacement for most industrial and HVAC general purpose relays using 1/4" spade connectors.

What are the contact ratings for inductive vs. resistive loads?
For HVAC contractors, it is rated at 12A (125V) or 8A (250V) for inductive loads (motors), and up to 18A (277V) for resistive loads. Always verify the full load amps (FLA) of your motor before installation.

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.