White-Rodgers 90-466 Fan Relay

The White-Rodgers 90-466 Fan Relay is a trade-grade heavy-duty enclosed fan relay designed for reliable switching in 277V commercial heating, cooling, and air handling applications. Engineered with a Single Pole Normally Open (SPNO) contact configuration, this unit is built to manage fan motors and auxiliary HVAC loads with precision. The 277 VAC coil operates efficiently at both 50/60 Hz, featuring a coil resistance of 10,300 Ohms to ensure low current draw during operation. With a nominal coil current of 10.8 mA and a 3 VA power rating (4 VA inrush), this relay minimizes electrical stress on control circuits while providing stable performance in high-ambient environments ranging from -40°F to 150°F. The totally enclosed design protects internal components from mechanical damage and dust, making it a rugged choice for commercial fan motor control and general-purpose switching where durability is non-negotiable.

• Heavy-Duty SPNO Contacts: Provides reliable power management for single-pole, normally open lead requirements in 277V circuits.
• 277V Coil Specification: Optimized for commercial building voltages with a low 10.8 mA nominal current draw to reduce control board strain.
• Enclosed Housing: Protects the internal switching mechanism from job-site contaminants, extending the service life in mechanical rooms.
• Universal Mounting: Compact 90-466 relay footprint allows for versatile installation in any position across various HVAC systems.
• Quiet Operation: Designed for noise-sensitive switching in general-purpose and fan-specific applications.

Commonly Asked Questions

What are the wiring positions for the White-Rodgers 90-466?
This SPNO enclosed relay features clearly marked terminals for the 277V coil and the normally open contacts. Being a general-purpose unit, it can be mounted in any orientation within the control cabinet to facilitate easier wire routing in tight terminal boxes.

Can this relay replace a 24V or 120V model?
No, the 90-466 model is specifically rated for a 277 VAC coil. Using this on a lower voltage control circuit will prevent the coil from pulling in the contacts, while higher voltages will likely cause immediate coil failure.

Is the 90-466 suitable for inductive motor loads?
Yes, this HVAC fan relay is designed for heavy-duty applications, including inductive loads like fan motors. Always verify that the motor's Full Load Amps (FLA) and Locked Rotor Amps (LRA) do not exceed the relay's maximum contact rating at 277V.

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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.