Resideo by Honeywell AT120A1004 20VA Transformer 120/208/240V to 24V Universal Mount

The Resideo by Honeywell AT120A1004 is a versatile 20VA step-down transformer designed for HVAC control systems and other low-voltage applications. This transformer converts standard line voltage (120V, 208V, or 240V) to 24V AC, making it ideal for powering thermostats, zone controls, relays, and other control devices.

Key Features:

• 20VA power rating provides reliable energy for control circuits
• Multi-voltage primary input: 120V, 208V, or 240V AC
• 24V AC secondary output for standard HVAC controls
• Universal mounting options including plate/foot mount or knockout installation
• Compact design for easy installation in tight spaces
• Built-in thermal overload protection for enhanced safety
• UL listed for quality and safety assurance

This transformer is commonly used as a replacement for failed control transformers in heating and cooling systems, or for new installations requiring 24V power. The flexible mounting configuration allows for installation directly on electrical panels, junction boxes, or equipment housings, making it adaptable to various installation requirements.