Resideo AT150B1252 Transformer
The Resideo AT150B1252 Transformer is a compact, foot-mounted power solution engineered for rigorous light commercial and residential HVACR control systems. This heavy-duty unit efficiently steps down 277V primary voltage to a stable 24VAC secondary (27.5 V.O.C.), delivering a reliable 50VA rating for driving hydronic controls, magnetic switches, and Building Automation Systems (BAS). Designed with a focus on field durability, it features plastic end caps and high-quality color-coded leads (9-inch length with 1/4-inch quick connects) to streamline wiring in tight electrical cabinets. As a NEC Class 2 recognized component, it ensures compliance in "not wet" environments. The robust AT150B1252 is the professional choice for contractors requiring a stable power supply for 24v thermostats and relay circuits where 277V line voltage is the standard source. This 60Hz transformer is built to maintain performance across a wide temperature range of -20°F to 105°F, preventing common nuisance trips in high-demand heating and cooling applications.
Key Benefits
- NEMA Class 2 Certified: Meets strict UL 1585 standards for safe integration into low-voltage control circuits.
- High Compatibility: Optimized for 277V to 24V step down applications, ideal for powering Nest, Ecobee, and Resideo smart thermostats.
- Enhanced Protection: Integrated plastic end caps shield internal windings from debris and physical damage during installation.
- Flexible Installation: Secure foot-mounted design with gold-colored brackets ensures rigid attachment to mechanical panels or outlet boxes.
- Simplified Wiring: Features color-coded leadwires and 1/4-inch male quick-connects for rapid, error-free field terminations.
Common Questions
Can the AT150B1252 be used for multi-tap primary voltages?
No, this specific model is a dedicated 277V primary unit. For multi-tap requirements (120/208/240V), you should reference the AT150B1146 or AT150B1237 series.
Is this transformer suitable for outdoor installation?
While it meets Class 3 "wet" requirements in certain configurations, it is primarily identified as Class 2 "not wet" and should be housed within a NEMA-rated enclosure if used in environments exposed to direct moisture.
What happens if the 50VA rating is exceeded?
Exceeding the 50VA load rating can lead to significant overheating or internal failure. Always calculate the total ampere draw of your 24V peripherals—including relays and actuators—before commissioning.
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: $46.01
-65%$46.01
$16.10Resideo AT150B1252 Transformer
The Resideo AT150B1252 Transformer is a compact, foot-mounted power solution engineered for rigorous light commercial and residential HVACR control systems. This heavy-duty unit efficiently steps down 277V primary voltage to a stable 24VAC secondary (27.5 V.O.C.), delivering a reliable 50VA rating for driving hydronic controls, magnetic switches, and Building Automation Systems (BAS). Designed with a focus on field durability, it features plastic end caps and high-quality color-coded leads (9-inch length with 1/4-inch quick connects) to streamline wiring in tight electrical cabinets. As a NEC Class 2 recognized component, it ensures compliance in "not wet" environments. The robust AT150B1252 is the professional choice for contractors requiring a stable power supply for 24v thermostats and relay circuits where 277V line voltage is the standard source. This 60Hz transformer is built to maintain performance across a wide temperature range of -20°F to 105°F, preventing common nuisance trips in high-demand heating and cooling applications.
Key Benefits
- NEMA Class 2 Certified: Meets strict UL 1585 standards for safe integration into low-voltage control circuits.
- High Compatibility: Optimized for 277V to 24V step down applications, ideal for powering Nest, Ecobee, and Resideo smart thermostats.
- Enhanced Protection: Integrated plastic end caps shield internal windings from debris and physical damage during installation.
- Flexible Installation: Secure foot-mounted design with gold-colored brackets ensures rigid attachment to mechanical panels or outlet boxes.
- Simplified Wiring: Features color-coded leadwires and 1/4-inch male quick-connects for rapid, error-free field terminations.
Common Questions
Can the AT150B1252 be used for multi-tap primary voltages?
No, this specific model is a dedicated 277V primary unit. For multi-tap requirements (120/208/240V), you should reference the AT150B1146 or AT150B1237 series.
Is this transformer suitable for outdoor installation?
While it meets Class 3 "wet" requirements in certain configurations, it is primarily identified as Class 2 "not wet" and should be housed within a NEMA-rated enclosure if used in environments exposed to direct moisture.
What happens if the 50VA rating is exceeded?
Exceeding the 50VA load rating can lead to significant overheating or internal failure. Always calculate the total ampere draw of your 24V peripherals—including relays and actuators—before commissioning.
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 AT150B1252 Transformer is a compact, foot-mounted power solution engineered for rigorous light commercial and residential HVACR control systems. This heavy-duty unit efficiently steps down 277V primary voltage to a stable 24VAC secondary (27.5 V.O.C.), delivering a reliable 50VA rating for driving hydronic controls, magnetic switches, and Building Automation Systems (BAS). Designed with a focus on field durability, it features plastic end caps and high-quality color-coded leads (9-inch length with 1/4-inch quick connects) to streamline wiring in tight electrical cabinets. As a NEC Class 2 recognized component, it ensures compliance in "not wet" environments. The robust AT150B1252 is the professional choice for contractors requiring a stable power supply for 24v thermostats and relay circuits where 277V line voltage is the standard source. This 60Hz transformer is built to maintain performance across a wide temperature range of -20°F to 105°F, preventing common nuisance trips in high-demand heating and cooling applications.
Key Benefits
- NEMA Class 2 Certified: Meets strict UL 1585 standards for safe integration into low-voltage control circuits.
- High Compatibility: Optimized for 277V to 24V step down applications, ideal for powering Nest, Ecobee, and Resideo smart thermostats.
- Enhanced Protection: Integrated plastic end caps shield internal windings from debris and physical damage during installation.
- Flexible Installation: Secure foot-mounted design with gold-colored brackets ensures rigid attachment to mechanical panels or outlet boxes.
- Simplified Wiring: Features color-coded leadwires and 1/4-inch male quick-connects for rapid, error-free field terminations.
Common Questions
Can the AT150B1252 be used for multi-tap primary voltages?
No, this specific model is a dedicated 277V primary unit. For multi-tap requirements (120/208/240V), you should reference the AT150B1146 or AT150B1237 series.
Is this transformer suitable for outdoor installation?
While it meets Class 3 "wet" requirements in certain configurations, it is primarily identified as Class 2 "not wet" and should be housed within a NEMA-rated enclosure if used in environments exposed to direct moisture.
What happens if the 50VA rating is exceeded?
Exceeding the 50VA load rating can lead to significant overheating or internal failure. Always calculate the total ampere draw of your 24V peripherals—including relays and actuators—before commissioning.
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.
