Technical Product Selection

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.

GE provides a Buck-Boost Transformer Selector tool. To request this tool, click here and request publication number DEE-244.

• Efficient insulating materials permit compact size and light weight
• Dual voltage primary and dual voltage secondary for maximum versatility
• Large, front-accessible wiring compartment permits fast, easy wiring
• Convenient conduit knockouts located on side, bottom and back of wiring compartment
• GE Buck-Boost Transformer Selector makes selection fast and easy
• Many GE buck-boost transformers fit competitor mounting footprints
• Indoor or outdoor service
• Convenient method of matching line voltage with equipment voltage
• Ability to handle loads up to 20 times nameplate rating when connected as an autotransformer
• Ideal for changing line voltages by small amounts
• Primary voltages include 120V, 240V and 480V
• Secondary voltages include 12V, 16V, 24V, 32V, 48V
• UL and cUL Listed
• Qualified to the seismic requirements of IEEE-693-1997 and IBC-2003

• International voltage adaptation
• Commercial and industrial air conditioning
• Heating systems
• Induction motors
• Voltage line drop correction
• Landscape lighting
• Low-voltage lighting