White-Rodgers 90-T50F3 Transformer

The White-Rodgers 90-T50F3 is a heavy-duty Class II transformer engineered for reliable 24V secondary output in commercial and residential HVACR control circuits. Providing a robust 50VA power rating, this unit is a versatile solution for powering contactors, relays, and solid-state boards across multiple line voltages. Its multi-tap primary configuration supports 120V, 208V, and 240V inputs, allowing technicians to carry a single SKU that fits almost any standard installation. The foot-mount design ensures a secure, vibration-resistant attachment within the air handler or furnace cabinet.

Built for industrial durability, the 90-T50F3 transformer features 18 AWG color-coded leads to simplify identification during field replacement. The primary leads are 11 inches long and pre-stripped for fast termination. This energy-limiting transformer is designed to protect downstream 24VAC components by safely opening the primary winding in the event of a sustained secondary short circuit, preventing fire hazards. Its compact footprint makes it an ideal multi-voltage HVAC transformer for tight low-voltage control sections.

• Multi-Tap Primary: Supports 120VAC, 208VAC, and 240VAC for maximum field flexibility.
• 50VA Rating: Higher capacity than standard 40VA units to handle multiple contactors or zone valves.
• Color-Coded Leads: 11-inch pre-stripped wire leads ensure fast, error-free wiring for contractors.
• Inherent Safety: Class II energy-limiting design protects against low-voltage overloads.

• What are the wiring colors for the primary taps? On the 90-T50F3, Black is Common, White is 120V, Red is 208V, and Orange is 240V. Always insulate any unused leads.
• Can this replace a transformer with a lower VA rating? Yes, a 50VA transformer can safely replace a 40VA unit, providing more overhead for the control circuit.
• What is the maximum ambient operating temperature? This unit is rated for operation in environments up to 150°F, typical of HVAC equipment cabinets.

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.