Resideo AT87A1189 Transformer
The Resideo AT87A1189 Transformer is a heavy-duty 277V to 24V control transformer engineered for reliable power delivery in commercial HVACR and building automation systems. Built to handle 48VA loads, this unit features a 277V primary and provides a precise 26.5 V.O.C. secondary output to ensure stable performance for 24VAC control circuits, driving relays, or powering digital I/O components. As a NEMA Type E transformer, it integrates energy limiting overload protection to safeguard downstream components and prevent winding burnout during fault conditions.
Designed for easy integration into existing panels or equipment frames, the Resideo foot mounted transformer includes 12-inch color-coded leadwires for primary connections and secure screw terminals for secondary wiring. This rugged control solution meets UL 1585 requirements and is rated for NEC Class 2 "not wet" and Class 3 "wet" applications, making it a versatile choice for professionals managing complex voltage reduction tasks. The compact metal-wrapped design with a laminated iron core ensures thermal stability across an operating range of -20°F to 105°F.
Key Benefits
- Precise Voltage Regulation: Efficiently steps down 277VAC to 24VAC with a 48VA rating, ideal for commercial HVAC controls and actuators.
- Enhanced Safety: Built-in energy limiting overload protection prevents damage from short circuits or excessive load demands.
- Versatile Mounting: The foot-mount design allows for fast installation on flat surfaces or within standard junction boxes.
- Professional Grade Durability: NEMA Type E rating and UL/CSA certification ensure compliance with strict job site specifications.
- Contractor-Friendly Wiring: Streamlined setup with 12-inch color-coded leadwires and accessible secondary terminals.
Common Questions
- Can this transformer be used in damp environments? Yes, it meets NEC Class 3 "wet" requirements, though internal junction box mounting is recommended for maximum protection.
- What is the purpose of the NEMA Type E rating? It designates the transformer’s specific electrical insulation and thermal capacity standards for industrial control applications.
- Does this unit require external fusing? The inherent energy limiting protection manages most overload scenarios, though always check local codes for additional circuit protection requirements.
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: $57.94
-65%$57.94
$20.28Resideo AT87A1189 Transformer
The Resideo AT87A1189 Transformer is a heavy-duty 277V to 24V control transformer engineered for reliable power delivery in commercial HVACR and building automation systems. Built to handle 48VA loads, this unit features a 277V primary and provides a precise 26.5 V.O.C. secondary output to ensure stable performance for 24VAC control circuits, driving relays, or powering digital I/O components. As a NEMA Type E transformer, it integrates energy limiting overload protection to safeguard downstream components and prevent winding burnout during fault conditions.
Designed for easy integration into existing panels or equipment frames, the Resideo foot mounted transformer includes 12-inch color-coded leadwires for primary connections and secure screw terminals for secondary wiring. This rugged control solution meets UL 1585 requirements and is rated for NEC Class 2 "not wet" and Class 3 "wet" applications, making it a versatile choice for professionals managing complex voltage reduction tasks. The compact metal-wrapped design with a laminated iron core ensures thermal stability across an operating range of -20°F to 105°F.
Key Benefits
- Precise Voltage Regulation: Efficiently steps down 277VAC to 24VAC with a 48VA rating, ideal for commercial HVAC controls and actuators.
- Enhanced Safety: Built-in energy limiting overload protection prevents damage from short circuits or excessive load demands.
- Versatile Mounting: The foot-mount design allows for fast installation on flat surfaces or within standard junction boxes.
- Professional Grade Durability: NEMA Type E rating and UL/CSA certification ensure compliance with strict job site specifications.
- Contractor-Friendly Wiring: Streamlined setup with 12-inch color-coded leadwires and accessible secondary terminals.
Common Questions
- Can this transformer be used in damp environments? Yes, it meets NEC Class 3 "wet" requirements, though internal junction box mounting is recommended for maximum protection.
- What is the purpose of the NEMA Type E rating? It designates the transformer’s specific electrical insulation and thermal capacity standards for industrial control applications.
- Does this unit require external fusing? The inherent energy limiting protection manages most overload scenarios, though always check local codes for additional circuit protection requirements.
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 AT87A1189 Transformer is a heavy-duty 277V to 24V control transformer engineered for reliable power delivery in commercial HVACR and building automation systems. Built to handle 48VA loads, this unit features a 277V primary and provides a precise 26.5 V.O.C. secondary output to ensure stable performance for 24VAC control circuits, driving relays, or powering digital I/O components. As a NEMA Type E transformer, it integrates energy limiting overload protection to safeguard downstream components and prevent winding burnout during fault conditions.
Designed for easy integration into existing panels or equipment frames, the Resideo foot mounted transformer includes 12-inch color-coded leadwires for primary connections and secure screw terminals for secondary wiring. This rugged control solution meets UL 1585 requirements and is rated for NEC Class 2 "not wet" and Class 3 "wet" applications, making it a versatile choice for professionals managing complex voltage reduction tasks. The compact metal-wrapped design with a laminated iron core ensures thermal stability across an operating range of -20°F to 105°F.
Key Benefits
- Precise Voltage Regulation: Efficiently steps down 277VAC to 24VAC with a 48VA rating, ideal for commercial HVAC controls and actuators.
- Enhanced Safety: Built-in energy limiting overload protection prevents damage from short circuits or excessive load demands.
- Versatile Mounting: The foot-mount design allows for fast installation on flat surfaces or within standard junction boxes.
- Professional Grade Durability: NEMA Type E rating and UL/CSA certification ensure compliance with strict job site specifications.
- Contractor-Friendly Wiring: Streamlined setup with 12-inch color-coded leadwires and accessible secondary terminals.
Common Questions
- Can this transformer be used in damp environments? Yes, it meets NEC Class 3 "wet" requirements, though internal junction box mounting is recommended for maximum protection.
- What is the purpose of the NEMA Type E rating? It designates the transformer’s specific electrical insulation and thermal capacity standards for industrial control applications.
- Does this unit require external fusing? The inherent energy limiting protection manages most overload scenarios, though always check local codes for additional circuit protection requirements.
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.
