Honeywell AT20A1123 Transformer

As an experienced HVAC technician, you know that finding a reliable power source for 24 VAC control systems is critical for minimizing callbacks. The Honeywell AT20A1123 Transformer is a heavy-duty, step-down solution engineered to convert 120V primary voltage to a stable 24V or 26.5V secondary output. This 19VA HVAC transformer is a versatile "universal" component, frequently used to power thermostats, gas valves, and relays in residential and light commercial heating and cooling systems. Built with a NEMA Type B enclosure, it is rated for a wide ambient temperature range of -20?F to +105?F, ensuring durability in demanding mechanical rooms. For contractors performing maintenance, the AT20A1123 is the direct replacement for 32001652-001, commonly found in humidifier and air cleaner applications. The channel frame mounting design allows for direct, horizontal, or vertical foot mounting, providing the flexibility needed for tight control cabinets. With 9-inch color-coded lead wires, this UL-recognized component simplifies field wiring and ensures a secure, high-performance connection every time.

• Broad Application Compatibility: Designed specifically for 24V control circuits, making it an essential Honeywell 24V transformer for diverse HVACR setups.
• Efficient Installation: Features 9-inch lead wires and a universal channel frame for multiple mounting orientations in the field.
• Industrial-Grade Construction: Meets NEMA Type B standards and NEC Class 2 requirements for reliable operation in varied environments.
• Direct OEM Swap: Serves as the precise replacement for Honeywell 32001652-001, eliminating guesswork during service calls.
• Stable Power Output: Provides a consistent 19VA rating at 50/60 Hz to prevent control board issues and voltage drops.

• What systems use the Honeywell AT20A1123? This 120V to 24V step-down transformer is typically used for powering heating/cooling control systems, humidifiers (like the HE220 or HE260 series), and general-purpose 24 VAC applications.
• How do I mount the AT20A1123 in a tight space? Your Honeywell AT20A1123 mounting options include direct foot mounting or using the channel frame to orient the unit horizontally or vertically, depending on cabinet clearance.
• Can this transformer handle higher VA loads? No, ensure your total system draw does not exceed the 19VA rating to prevent overheating or premature failure of the secondary windings.

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.