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350 VA Buck-Boost Base Transformer, 120/240V × 16/32V, Single Phase
$252.33
Sanzo Power 350 VA single-phase buck-boost base transformer — 120/240V × 16/32V dual windings. Resin-encapsulated, NEMA 3R, wall mount, 115°C rise, cETLus. For small voltage corrections in single- or three-phase buck-boost banks.
Ships in 5-6 weeks
Inventory & Inbound
0 currently in stock
- 60 more available, earliest Jul 21, 2026
Projected inbound quantities and dates are based on current purchase orders with our suppliers and are not guaranteed. We update them as suppliers confirm.
Compare with similar items
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| Item | This item — Sanzo Power TX-B2-035H-124210 | Hammond Power Solutions QC50ESCB |
| Price | $252.33 | $484.00 |
| Availability | Ships in 5-6 weeks | Ships in 10-14 weeks |
| Add to Cart | View | |
| Brand | Sanzo Power | Hammond Power Solutions |
| Capacity | 350 VA | — |
| Primary Voltage | 120/240V | 120/240V |
| Secondary Voltage | 16/32V | 16/32V |
| Phase | Single Phase | Single-Phase |
| Enclosure | NEMA 3R | — |
| Listing | cETLus Listed | — |
| Max Primary OCP | 3A | — |
| Frequency | 50/60 Hz | — |
| Temperature Rise | 115°C | — |
| Insulation | 180°C | — |
| Configuration | Resin-Encapsulated | — |
| Taps | None | — |
| Mount | Wall | — |
| Transformer Type | Buck/Boost | — |
Specifications
| Brand | Sanzo Power |
| Capacity | 0.35 kVA |
| Primary Voltage | 120/240V |
| Secondary Voltage | 16/32V |
| Phase | Single Phase |
| Max Primary OCP | 3A |
| Conduit Knockout | 1/2" NPT |
| Frequency | 50/60 Hz |
| Temperature Rise | 115°C |
| Insulation | 180°C |
| Configuration | Resin-Encapsulated |
| Part # | TX-B2-035H-124210 |
| Taps | None |
| Winding Material | Aluminum |
| Weatherproof Rating | NEMA 3R |
| Enclosure Material | Steel |
| Finish Color | ANSI 70 Light Grey |
| Certification Listing | cETLus |
| Transformer Type | Buck/Boost |
| Dimensions (W×H×D) | 4.77 × 9.25 × 3.86 in |
| Weight | 14 lb |
Product Description
The TX-B2-035H-124210 is a 350 VA single-phase, resin-encapsulated buck-boost transformer. It has a dual 120/240V primary winding and a 16/32V low-voltage winding — these are the transformer’s windings, not a 120/240V-to-16/32V conversion. Wired as a buck-boost autotransformer, the low-voltage winding adds to or subtracts from the supply to make small voltage corrections (typically a few percent), so the unit carries only the correction portion of the load and supports a much larger connected load. It can also serve as an isolation transformer at 16/32V.
Housed in a NEMA 3R steel enclosure (ANSI 70 light grey) for indoor or outdoor mounting with 1/2" NPT conduit knockouts, aluminum windings, Class 180°C insulation, 115°C rise, 50/60 Hz, no taps, cETLus listed. Use one unit for single-phase, two (open delta) or three (wye) for three-phase buck-boost banks.