
Resideo AT72D1048 Transformer
For professional contractors, the Resideo AT72D1048 Transformer is a reliable industry standard for stepping down 120V primary voltage to a stable 24V secondary output. This 40VA HVAC transformer is specifically engineered to provide consistent power to low-voltage control circuits, including thermostats, gas valves, and relays. Built with a 4x4 plate mount design, it is intended to protrude directly into a junction box, ensuring a secure and NEC-compliant installation in residential or light commercial environments.
The Resideo AT72D1048 features NEMA Type D construction and is energy limiting, meeting rigorous safety standards for Class 2 (not wet) and Class 3 (wet) requirements. The unit comes equipped with 9-inch primary leadwires and a 1/2-inch female conduit spud with secondary leads, simplifying the process of retrofitting or replacing burnt-out 24V step-down transformers. Designed for high-performance duty, this plate mounted transformer maintains its efficiency across a wide temperature range, making it a "truck stock" essential for service technicians.
Key Benefits:- High Compatibility: Powers any 24V control system within its 40VA rating, making it a versatile choice for multi-brand HVAC equipment.
- Enhanced Safety: Built-in override protection and meets UL 1585 requirements to prevent system damage from electrical faults.
- Simplified Wiring: Includes color-coded leadwires for primary 120V connections and pre-installed conduit spuds for the secondary side.
- Durable Mounting: The 4"x4" plate mount allows for direct attachment to standard square junction boxes, saving space and time.
- What is the maximum load this transformer can handle? This unit is rated at 40VA (Volt-Amperes). Ensure the total current draw of your 24V components does not exceed this capacity to prevent overheating.
- Can this be used for both heating and cooling systems? Yes, the Resideo AT72D1048 provides the universal 24VAC needed for standard heating and cooling control circuits.
- What does the NEMA Type D rating signify? It indicates the transformer's enclosure and performance characteristics meet specific NEMA standards for energy-limiting control transformers.
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.
Original: $59.14
-65%$59.14
$20.70Resideo AT72D1048 Transformer
For professional contractors, the Resideo AT72D1048 Transformer is a reliable industry standard for stepping down 120V primary voltage to a stable 24V secondary output. This 40VA HVAC transformer is specifically engineered to provide consistent power to low-voltage control circuits, including thermostats, gas valves, and relays. Built with a 4x4 plate mount design, it is intended to protrude directly into a junction box, ensuring a secure and NEC-compliant installation in residential or light commercial environments.
The Resideo AT72D1048 features NEMA Type D construction and is energy limiting, meeting rigorous safety standards for Class 2 (not wet) and Class 3 (wet) requirements. The unit comes equipped with 9-inch primary leadwires and a 1/2-inch female conduit spud with secondary leads, simplifying the process of retrofitting or replacing burnt-out 24V step-down transformers. Designed for high-performance duty, this plate mounted transformer maintains its efficiency across a wide temperature range, making it a "truck stock" essential for service technicians.
Key Benefits:- High Compatibility: Powers any 24V control system within its 40VA rating, making it a versatile choice for multi-brand HVAC equipment.
- Enhanced Safety: Built-in override protection and meets UL 1585 requirements to prevent system damage from electrical faults.
- Simplified Wiring: Includes color-coded leadwires for primary 120V connections and pre-installed conduit spuds for the secondary side.
- Durable Mounting: The 4"x4" plate mount allows for direct attachment to standard square junction boxes, saving space and time.
- What is the maximum load this transformer can handle? This unit is rated at 40VA (Volt-Amperes). Ensure the total current draw of your 24V components does not exceed this capacity to prevent overheating.
- Can this be used for both heating and cooling systems? Yes, the Resideo AT72D1048 provides the universal 24VAC needed for standard heating and cooling control circuits.
- What does the NEMA Type D rating signify? It indicates the transformer's enclosure and performance characteristics meet specific NEMA standards for energy-limiting control transformers.
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.
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Description
For professional contractors, the Resideo AT72D1048 Transformer is a reliable industry standard for stepping down 120V primary voltage to a stable 24V secondary output. This 40VA HVAC transformer is specifically engineered to provide consistent power to low-voltage control circuits, including thermostats, gas valves, and relays. Built with a 4x4 plate mount design, it is intended to protrude directly into a junction box, ensuring a secure and NEC-compliant installation in residential or light commercial environments.
The Resideo AT72D1048 features NEMA Type D construction and is energy limiting, meeting rigorous safety standards for Class 2 (not wet) and Class 3 (wet) requirements. The unit comes equipped with 9-inch primary leadwires and a 1/2-inch female conduit spud with secondary leads, simplifying the process of retrofitting or replacing burnt-out 24V step-down transformers. Designed for high-performance duty, this plate mounted transformer maintains its efficiency across a wide temperature range, making it a "truck stock" essential for service technicians.
Key Benefits:- High Compatibility: Powers any 24V control system within its 40VA rating, making it a versatile choice for multi-brand HVAC equipment.
- Enhanced Safety: Built-in override protection and meets UL 1585 requirements to prevent system damage from electrical faults.
- Simplified Wiring: Includes color-coded leadwires for primary 120V connections and pre-installed conduit spuds for the secondary side.
- Durable Mounting: The 4"x4" plate mount allows for direct attachment to standard square junction boxes, saving space and time.
- What is the maximum load this transformer can handle? This unit is rated at 40VA (Volt-Amperes). Ensure the total current draw of your 24V components does not exceed this capacity to prevent overheating.
- Can this be used for both heating and cooling systems? Yes, the Resideo AT72D1048 provides the universal 24VAC needed for standard heating and cooling control circuits.
- What does the NEMA Type D rating signify? It indicates the transformer's enclosure and performance characteristics meet specific NEMA standards for energy-limiting control transformers.
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.












