White-Rodgers 90-112 Trans/Relay

The White-Rodgers 90-112 is a heavy-duty Fan Control Center engineered for seamless integration into various HVACR applications. This transformer and relay combination features a DPDT (Double-Pole, Double-Throw) relay and a 40VA energy-limiting Class II transformer, providing reliable low-voltage control of line-voltage circuits. Designed for mounting on a standard 4x4 junction box, the 90-112 relay comes with pre-wired line voltage connections and color-coded leads to streamline field installation. The 120V primary and 24V secondary output ensure compatibility with standard HVAC 24V control systems, making it a rugged choice for controlling two-speed blower motors and auxiliary equipment in residential and light commercial settings.

• Universal Compatibility: Reliable performance with 120 VAC systems requiring a 24 VAC secondary interface.
• Simplified Wiring: Features color-coded, pre-stripped leads and a terminal board for quick low-voltage terminations.
• Compact Integration: Mounts directly to 4x4 junction boxes, saving valuable cabinet space in tight air handler or furnace installs.
• Robust Switching: The DPDT relay configuration supports both heating and cooling speed taps or auxiliary fan logic.

What is the maximum load for the White-Rodgers 90-112?
The relay is rated for 13.8 FLA (Full Load Amps) at 120V and 6.9 FLA at 240V, supporting standard blower motor requirements.

Does this fan center work with smart thermostats?
Yes, the 40VA transformer provides sufficient power for most 24V smart thermostats while controlling the blower relay coil.

Can the 90-112 be used as a replacement for individual relays?
Absolutely, this integrated unit replaces separate transformers and relays, reducing potential failure points in the fan control circuit.

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.