Resideo AT140B1214 Transformer
The Resideo AT140B1214 is a professional-grade 40VA HVAC transformer engineered for multi-tap versatility in light commercial and residential control circuits. As a veteran-preferred 24V step-down transformer, it features a multi-voltage primary rated for 120V, 208V, and 240V AC inputs, ensuring compatibility with a wide range of cooling and heating equipment. This foot-mounted transformer architecture includes 9-inch color-coded lead wires for simplified identification of primary taps and screw terminals for secondary load connections. Designed to meet NEC Class 2 requirements and UL 1585 standards, it provides a stable 27 V.O.C. secondary output to power thermostats, zone panels, and gas valves. The unit comes equipped with plastic end caps to protect internal windings from environmental debris and mechanical damage during field installation. Rated for an operational temperature range of -20°F to +105°F, this high-performance technical component ensures consistent 60Hz power delivery for critical system logic and 24-volt signaling.
Key Benefits- Multi-Tap Primary Voltage: Supports 120/208/240 VAC inputs, reducing the need to carry multiple SKUs for varying field voltages.
- Enhanced Circuit Protection: Specifically designed to meet UL 1585 insulation standards and NEC Class 2 safety requirements.
- Simplified Field Wiring: Features 9-inch color-coded leads and integrated secondary screw terminals for faster contractor cabinet mounting.
- Durable Construction: Integrated plastic end caps shield the core and provide a professional finish in exposed control panels.
- Versatile Mounting: Standard foot-mount transformer configuration allows for easy replacement in existing HVAC air handlers and furnaces.
Can I use this transformer to replace a 20VA or 30VA model?
Yes. As long as the secondary voltage matches (24V/27V), a 40VA transformer can replace lower VA rated units, providing more headroom for additional control accessories like humidifiers or zone dampers.
What is the purpose of the 27 V.O.C. rating?
The 27 Volts Open Circuit (V.O.C.) rating represents the voltage measured without a load. Under a standard 40VA load, the output stabilizes to the nominal 24V required by HVAC logic controllers.
Is this transformer suitable for outdoor condensers?
This unit is identified as Class 2 "not wet" and Class 3 "wet" but should generally be housed within a NEMA-rated electrical enclosure or the equipment cabinet to ensure long-term reliability.
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: $20.47
-65%$20.47
$7.16Resideo AT140B1214 Transformer
The Resideo AT140B1214 is a professional-grade 40VA HVAC transformer engineered for multi-tap versatility in light commercial and residential control circuits. As a veteran-preferred 24V step-down transformer, it features a multi-voltage primary rated for 120V, 208V, and 240V AC inputs, ensuring compatibility with a wide range of cooling and heating equipment. This foot-mounted transformer architecture includes 9-inch color-coded lead wires for simplified identification of primary taps and screw terminals for secondary load connections. Designed to meet NEC Class 2 requirements and UL 1585 standards, it provides a stable 27 V.O.C. secondary output to power thermostats, zone panels, and gas valves. The unit comes equipped with plastic end caps to protect internal windings from environmental debris and mechanical damage during field installation. Rated for an operational temperature range of -20°F to +105°F, this high-performance technical component ensures consistent 60Hz power delivery for critical system logic and 24-volt signaling.
Key Benefits- Multi-Tap Primary Voltage: Supports 120/208/240 VAC inputs, reducing the need to carry multiple SKUs for varying field voltages.
- Enhanced Circuit Protection: Specifically designed to meet UL 1585 insulation standards and NEC Class 2 safety requirements.
- Simplified Field Wiring: Features 9-inch color-coded leads and integrated secondary screw terminals for faster contractor cabinet mounting.
- Durable Construction: Integrated plastic end caps shield the core and provide a professional finish in exposed control panels.
- Versatile Mounting: Standard foot-mount transformer configuration allows for easy replacement in existing HVAC air handlers and furnaces.
Can I use this transformer to replace a 20VA or 30VA model?
Yes. As long as the secondary voltage matches (24V/27V), a 40VA transformer can replace lower VA rated units, providing more headroom for additional control accessories like humidifiers or zone dampers.
What is the purpose of the 27 V.O.C. rating?
The 27 Volts Open Circuit (V.O.C.) rating represents the voltage measured without a load. Under a standard 40VA load, the output stabilizes to the nominal 24V required by HVAC logic controllers.
Is this transformer suitable for outdoor condensers?
This unit is identified as Class 2 "not wet" and Class 3 "wet" but should generally be housed within a NEMA-rated electrical enclosure or the equipment cabinet to ensure long-term reliability.
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
The Resideo AT140B1214 is a professional-grade 40VA HVAC transformer engineered for multi-tap versatility in light commercial and residential control circuits. As a veteran-preferred 24V step-down transformer, it features a multi-voltage primary rated for 120V, 208V, and 240V AC inputs, ensuring compatibility with a wide range of cooling and heating equipment. This foot-mounted transformer architecture includes 9-inch color-coded lead wires for simplified identification of primary taps and screw terminals for secondary load connections. Designed to meet NEC Class 2 requirements and UL 1585 standards, it provides a stable 27 V.O.C. secondary output to power thermostats, zone panels, and gas valves. The unit comes equipped with plastic end caps to protect internal windings from environmental debris and mechanical damage during field installation. Rated for an operational temperature range of -20°F to +105°F, this high-performance technical component ensures consistent 60Hz power delivery for critical system logic and 24-volt signaling.
Key Benefits- Multi-Tap Primary Voltage: Supports 120/208/240 VAC inputs, reducing the need to carry multiple SKUs for varying field voltages.
- Enhanced Circuit Protection: Specifically designed to meet UL 1585 insulation standards and NEC Class 2 safety requirements.
- Simplified Field Wiring: Features 9-inch color-coded leads and integrated secondary screw terminals for faster contractor cabinet mounting.
- Durable Construction: Integrated plastic end caps shield the core and provide a professional finish in exposed control panels.
- Versatile Mounting: Standard foot-mount transformer configuration allows for easy replacement in existing HVAC air handlers and furnaces.
Can I use this transformer to replace a 20VA or 30VA model?
Yes. As long as the secondary voltage matches (24V/27V), a 40VA transformer can replace lower VA rated units, providing more headroom for additional control accessories like humidifiers or zone dampers.
What is the purpose of the 27 V.O.C. rating?
The 27 Volts Open Circuit (V.O.C.) rating represents the voltage measured without a load. Under a standard 40VA load, the output stabilizes to the nominal 24V required by HVAC logic controllers.
Is this transformer suitable for outdoor condensers?
This unit is identified as Class 2 "not wet" and Class 3 "wet" but should generally be housed within a NEMA-rated electrical enclosure or the equipment cabinet to ensure long-term reliability.
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.
