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 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.

GE Industrial Solution Buck Boost Transformer, Type QB Dry Encapsulated Small Power Standard, 240/480 VAC Primary, 24/48 VAC Secondary, 3 kVA, 60 Hz, 1 ph, Wire Lead/Screw Terminal, Wall Mount, IS-12, NEMA 3R, 40 deg C, Steel Housing, 9.38 in W x 11.12 in H

• https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/GE_9T51B0213_Specification_Sheet.pdf https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/GE_9T51B0213_Specification_Sheet.pdf

• Knockouts provided on back and bottom
• High grade silicon steel core
• Mounting holes on side for easy access
• 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 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