Description
The Honeywell AT87A1049 is a reliable, professionally rated control transformer engineered for HVAC and building automation applications. Designed to step down a 120V primary supply to a 26.5V secondary output at 48VA, this transformer delivers consistent, stable low-voltage power to thermostats, controls, and other HVAC system components.
Key Features
- 120V primary voltage to 26.5V secondary voltage step-down design
- 48VA power rating for dependable low-voltage control circuit power
- Foot-mounted configuration for easy, secure panel or equipment installation
- NEMA Type E enclosure for safe, code-compliant installation
- Built-in energy-limiting overload protection helps prevent transformer damage from short circuits or overloads
- 12″ leadwires included for flexible wiring connections
Applications
- HVAC control systems requiring 24–26.5V secondary power
- Thermostats, zone controls, and building automation devices
- Furnace, air handler, and rooftop unit control circuits
- Commercial and residential low-voltage control panel installations
Specifications
- SKU: AT87A1049
- Brand: Honeywell
- Primary Voltage: 120V
- Secondary Voltage: 26.5V
- VA Rating: 48VA
- Mounting Style: Foot Mounted
- Enclosure Type: NEMA Type E
- Overload Protection: Energy-Limiting
- Leadwire Length: 12 inches
The AT87A1049’s energy-limiting overload protection is a key safety advantage — it automatically limits output current in the event of a fault, protecting both the transformer and downstream control components without requiring a separate fuse. The foot-mount design simplifies installation in control panels and equipment cabinets, while the 12″ leadwires provide the flexibility needed for clean, professional wiring runs.
