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15.24 kVA Step-Up Buck-Boost Transformer (Booster), 208V → 220V, 40A, Three Phase
$706.49
15.24 kVA three-phase buck-boost booster that boosts 208V to 220V (6% correction) at 40A. Encapsulated NEMA 3R, cETLus listed. In-stock ships same business day.
✔ In Stock: 7
Specifications
| Brand | Sanzo Sales |
| Phase | Three Phase (3-PH), Delta |
| Capacity | 15.24 kVA |
| Primary Voltage | 208V |
| Primary Amperage | 42.3A |
| Secondary Voltage | 220V |
| Secondary Amperage | 40A |
| Maximum Primary OCP | 60A |
| Frequency | 50/60 Hz |
| Insulation | 180°C |
| Temperature Rise | 115°C |
| Transformer Type | Buck/Boost |
| Part # | TX-BB-208D-220D-40A |
| Configuration | Encapsulated Autotransformer |
| Primary Termination | Lead Wires & Terminal Lugs |
| Secondary Termination | Lead Wires & Terminal Lugs |
| Termination Access | (6) ¾" NPT Hubs |
| Winding Material | Aluminum |
| Enclosure Material | Steel |
| Finish Color | ANSI 70 Light Grey |
| Weatherproof Rating | NEMA 3R |
| Certification Listing | cETLus |
| Dimensions (W×H×D) | 10.25 × 9.25 × 4.75 in |
| Weight | 34 lb |
Product Description
The TX-BB-208D-220D-40A is a 15.24 kVA three-phase buck-boost transformer that boosts a 208V supply to 220V — a 6% voltage correction — bringing 220V-rated equipment back into its proper operating range. Wired as an encapsulated booster transformer (autotransformer), it carries only the correction portion of the load, so this unit corrects a much larger connected load: up to 40A at 220V (15.24 kVA usable line capacity).
Resin-encapsulated in a NEMA 3R steel enclosure (ANSI 70 light grey) for indoor or outdoor mounting at the disconnect. Lead wires and terminal lugs, aluminum windings, 180°C insulation system, 115°C rise, 50/60 Hz, cETLus listed. Supplied as a two-unit open-delta bank for three-phase delta service. In-stock units ship the same business day.