Resideo AT20B1056 Transformer
The Resideo AT20B1056 is a professional-grade 120V to 24V step-down transformer engineered for high-reliability in residential and light commercial HVACR control circuits. Delivering a 20VA power rating, this unit is specifically designed to power 24VAC thermostats, zone valves, and relay coils with consistent voltage output. The channel frame mounting configuration allows for secure installation directly onto junction boxes or appliance cabinets, while the 9-inch color-coded lead wires ensure sufficient reach for simplified field wiring. Built to meet rigorous NEMA standards, the AT20B1056 features a robust core construction that minimizes electromagnetic interference and heat dissipation. For technicians replacing older Class 2 transformers, this Resideo model provides the necessary current capacity to handle modern electronic controls without risking voltage drops during peak load cycles. Whether you are performing a furnace transformer replacement or upgrading a hydronic control system, this component ensures stable 24-volt secondary power delivery across all standard ambient operating temperatures.
Key Benefits for Contractors- 20VA Power Capacity: Ideal for single-stage heating and cooling systems requiring stable 24V secondary voltage.
- Rugged Channel Frame: Provides a rigid mounting footprint for high-vibration environments like air handlers and furnaces.
- Internal Thermal Protection: Engineered to withstand transient surges and prevent secondary circuit overloads.
- NEMA Rated Reliability: Ensures compliance with electrical codes and structural integrity for long-term field service.
- Direct Lead Connections: 9-inch factory-stripped leads reduce installation time compared to terminal-style transformers.
Can the AT20B1056 handle multiple zone valves?
This 20VA transformer is typically rated for one or two low-draw zone valves. For multi-zone hydronic manifolds, verify the total amperage draw to ensure it does not exceed 0.8 amps on the secondary side.
Is this transformer compatible with smart thermostats?
Yes, the 24VAC output is compatible with most modern Wi-Fi thermostats, provided the total system load (including gas valves and relays) stays within the 20VA limit.
What are the primary mounting orientation limits?
The Resideo AT20B1056 can be mounted in any orientation using the channel frame footings, making it versatile for tight mechanical closets and diverse equipment chassis.
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: $36.51
-65%$36.51
$12.78Resideo AT20B1056 Transformer
The Resideo AT20B1056 is a professional-grade 120V to 24V step-down transformer engineered for high-reliability in residential and light commercial HVACR control circuits. Delivering a 20VA power rating, this unit is specifically designed to power 24VAC thermostats, zone valves, and relay coils with consistent voltage output. The channel frame mounting configuration allows for secure installation directly onto junction boxes or appliance cabinets, while the 9-inch color-coded lead wires ensure sufficient reach for simplified field wiring. Built to meet rigorous NEMA standards, the AT20B1056 features a robust core construction that minimizes electromagnetic interference and heat dissipation. For technicians replacing older Class 2 transformers, this Resideo model provides the necessary current capacity to handle modern electronic controls without risking voltage drops during peak load cycles. Whether you are performing a furnace transformer replacement or upgrading a hydronic control system, this component ensures stable 24-volt secondary power delivery across all standard ambient operating temperatures.
Key Benefits for Contractors- 20VA Power Capacity: Ideal for single-stage heating and cooling systems requiring stable 24V secondary voltage.
- Rugged Channel Frame: Provides a rigid mounting footprint for high-vibration environments like air handlers and furnaces.
- Internal Thermal Protection: Engineered to withstand transient surges and prevent secondary circuit overloads.
- NEMA Rated Reliability: Ensures compliance with electrical codes and structural integrity for long-term field service.
- Direct Lead Connections: 9-inch factory-stripped leads reduce installation time compared to terminal-style transformers.
Can the AT20B1056 handle multiple zone valves?
This 20VA transformer is typically rated for one or two low-draw zone valves. For multi-zone hydronic manifolds, verify the total amperage draw to ensure it does not exceed 0.8 amps on the secondary side.
Is this transformer compatible with smart thermostats?
Yes, the 24VAC output is compatible with most modern Wi-Fi thermostats, provided the total system load (including gas valves and relays) stays within the 20VA limit.
What are the primary mounting orientation limits?
The Resideo AT20B1056 can be mounted in any orientation using the channel frame footings, making it versatile for tight mechanical closets and diverse equipment chassis.
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
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Description
The Resideo AT20B1056 is a professional-grade 120V to 24V step-down transformer engineered for high-reliability in residential and light commercial HVACR control circuits. Delivering a 20VA power rating, this unit is specifically designed to power 24VAC thermostats, zone valves, and relay coils with consistent voltage output. The channel frame mounting configuration allows for secure installation directly onto junction boxes or appliance cabinets, while the 9-inch color-coded lead wires ensure sufficient reach for simplified field wiring. Built to meet rigorous NEMA standards, the AT20B1056 features a robust core construction that minimizes electromagnetic interference and heat dissipation. For technicians replacing older Class 2 transformers, this Resideo model provides the necessary current capacity to handle modern electronic controls without risking voltage drops during peak load cycles. Whether you are performing a furnace transformer replacement or upgrading a hydronic control system, this component ensures stable 24-volt secondary power delivery across all standard ambient operating temperatures.
Key Benefits for Contractors- 20VA Power Capacity: Ideal for single-stage heating and cooling systems requiring stable 24V secondary voltage.
- Rugged Channel Frame: Provides a rigid mounting footprint for high-vibration environments like air handlers and furnaces.
- Internal Thermal Protection: Engineered to withstand transient surges and prevent secondary circuit overloads.
- NEMA Rated Reliability: Ensures compliance with electrical codes and structural integrity for long-term field service.
- Direct Lead Connections: 9-inch factory-stripped leads reduce installation time compared to terminal-style transformers.
Can the AT20B1056 handle multiple zone valves?
This 20VA transformer is typically rated for one or two low-draw zone valves. For multi-zone hydronic manifolds, verify the total amperage draw to ensure it does not exceed 0.8 amps on the secondary side.
Is this transformer compatible with smart thermostats?
Yes, the 24VAC output is compatible with most modern Wi-Fi thermostats, provided the total system load (including gas valves and relays) stays within the 20VA limit.
What are the primary mounting orientation limits?
The Resideo AT20B1056 can be mounted in any orientation using the channel frame footings, making it versatile for tight mechanical closets and diverse equipment chassis.
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.
