Buck boost transformers are small, single-phase, dry type distribution transformers designed and shipped as insulating/isolating transformers. They have a dual voltage primary and a dual voltage secondary. These transformers can be connected for a wide range of voltage combinations. The most common use is to buck (lower) or boost (raise) the supply voltage a small amount, usually 5 to 27%. Buck boost transformers comply with NEC Article 210-9, Exception 1, when field connected as an autotransformer. ABB bucking and boosting transformers provide an economical and convenient means for bucking or boosting voltage, usually no more than ±20% on single- and three-phase circuits. They are compact, relatively light in weight, and can be easily installed for indoor or outdoor service. Buck-boost transformers are employed primarily for boosting single-and three-phase circuits by connecting them as autotransformers. When connected as an autotransformer, only the low-voltage, high-current capacity secondary windings are required to carry the load. Because this load is only transformed over a small change in voltage, the buck-boost transformer can handle loads many times its nameplate kVA rating.

Specifications:

Power Rating: 0.5 kVA
Construction: Encapsulated, Non-Ventilated
Primary Voltage: 120/240 V
Secondary Voltage: 12/24 V
Frequency Rating: 60 Hz
Number of Phases: 1
Winding Type: Copper
Temperature Rise: 100 Deg C
Enclosure: NEMA 3R
Size: 6.88 Inch W x 4.88 Inch D x 8.38 Inch H
Application: Indoor/Outdoor