Resideo AT72D1089 Transformer
The Resideo AT72D1089 Transformer is a professional-grade solution for technicians requiring a reliable 120V to 24V step-down for HVAC control circuits. Engineered with a 40VA power rating, this unit is built to manage the electrical load of 24VAC thermostats, gas valves, and multi-zone relays. The hardware features a 4"x4" plate mount design and a NEMA Type D enclosure, ensuring compliance with NEC Class 2 (not wet) and Class 3 (wet) requirements. For streamlined installation, it includes 9-inch color-coded leadwires on the primary side and dual screw terminals on the secondary. With a wide operational temperature range of -20°F to 105°F, this 24V control transformer maintains consistent voltage output under demanding field conditions. Its energy-limiting design provides inherent override protection, meeting UL 1585 standards to prevent circuit overheating and protect sensitive downstream components from saturation.
Key Benefits- Universal Compatibility: Powers diverse 24V systems including residential furnaces, boilers, and hydronic zone controllers.
- Simplified Wiring: Includes color-coded leads and a 1/2-inch male conduit spud for fast integration into standard junction boxes.
- Rugged Reliability: Heavy-duty construction meets NEMA DC20-1992 standards for industrial-grade performance.
- Flexible Mounting: The 4x4 plate allows for secure attachment to electrical boxes, reducing vibration and mechanical stress.
- Is the AT72D1089 a direct replacement for 40VA Honeywell transformers? Yes, Resideo is the manufacturer of Honeywell Home products; this model replaces most 120V/24V foot or plate-mounted 40VA units.
- Can I use this for multi-zone valve setups? Provided the total VA draw of your valves does not exceed 40VA, this transformer is ideal for multi-zone hydronic applications.
- Does this transformer require external fusing? This model is energy-limiting and meets UL 1585 requirements, but always follow local electrical codes regarding secondary circuit protection.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Resideo AT72D1089 Transformer is a professional-grade solution for technicians requiring a reliable 120V to 24V step-down for HVAC control circuits. Engineered with a 40VA power rating, this unit is built to manage the electrical load of 24VAC thermostats, gas valves, and multi-zone relays. The hardware features a 4"x4" plate mount design and a NEMA Type D enclosure, ensuring compliance with NEC Class 2 (not wet) and Class 3 (wet) requirements. For streamlined installation, it includes 9-inch color-coded leadwires on the primary side and dual screw terminals on the secondary. With a wide operational temperature range of -20°F to 105°F, this 24V control transformer maintains consistent voltage output under demanding field conditions. Its energy-limiting design provides inherent override protection, meeting UL 1585 standards to prevent circuit overheating and protect sensitive downstream components from saturation.
Key Benefits- Universal Compatibility: Powers diverse 24V systems including residential furnaces, boilers, and hydronic zone controllers.
- Simplified Wiring: Includes color-coded leads and a 1/2-inch male conduit spud for fast integration into standard junction boxes.
- Rugged Reliability: Heavy-duty construction meets NEMA DC20-1992 standards for industrial-grade performance.
- Flexible Mounting: The 4x4 plate allows for secure attachment to electrical boxes, reducing vibration and mechanical stress.
- Is the AT72D1089 a direct replacement for 40VA Honeywell transformers? Yes, Resideo is the manufacturer of Honeywell Home products; this model replaces most 120V/24V foot or plate-mounted 40VA units.
- Can I use this for multi-zone valve setups? Provided the total VA draw of your valves does not exceed 40VA, this transformer is ideal for multi-zone hydronic applications.
- Does this transformer require external fusing? This model is energy-limiting and meets UL 1585 requirements, but always follow local electrical codes regarding secondary circuit protection.
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.
