TX-BB-244V-220V-90A
90 A / 19.8 kVA
2 units total: $1,891.98
In stock — 6 available now
Costs $444.04 more
View in-stock option
Showing product media 1 of 5
30.23 kVA Step-Down Buck-Boost Transformer, 244V → 220V, 137.39A, Single Phase
by Sanzo Sales · Part # TX-BB-244V-220V-137.39A
4.9 out of 5 · 255 customer reviews(opens the reviews page)$1,447.94
Need it faster?
Voltage, phase, and connection match. Capacity differs, so review any lower-capacity warning.
Confirm you can split the load across two units
30.23 kVA single-phase buck-boost that bucks 244V to 220V (10% correction) at 137.39A. Encapsulated NEMA 3R, cETLus listed. In-stock ships same business day.
✔ In Stock: 4
Specifications
| Brand | Sanzo Sales |
| Phase | Single Phase (1-PH), AC |
| Capacity | 30.23 kVA |
| Primary Voltage | 244V |
| Primary Amperage | 123.89A |
| Secondary Voltage | 220V |
| Secondary Amperage | 137.39A |
| Maximum Primary OCP | 175A |
| Frequency | 50/60 Hz |
| Insulation | 180°C |
| Temperature Rise | 115°C |
| Transformer Type | Buck/Boost |
| Part # | TX-BB-244V-220V-137.39A |
| 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) | 7.68 × 12.2 × 6.38 in |
| Weight | 60 lb |
Product Description
The TX-BB-244V-220V-137.39A is a 30.23 kVA single-phase buck-boost transformer that bucks a 244V supply to 220V — a 10% voltage correction — bringing 220V-rated equipment back into its proper operating range. Wired as an encapsulated buck transformer (autotransformer), it carries only the correction portion of the load, so this unit corrects a much larger connected load: up to 137.39A at 220V (30.23 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. Use two units in open-delta for three-phase delta systems, three for wye. In-stock units ship the same business day.