750 VA Buck-Boost Base Transformer, 120/240V × 12/24V, Single Phase
$375.14
Sanzo Power 750 VA single-phase buck-boost base transformer — 120/240V × 12/24V dual windings. Resin-encapsulated, NEMA 3R, wall mount, 115°C rise, cETLus. For small voltage corrections in single- or three-phase buck-boost banks.
✔ In Stock: 37
Inventory & Inbound
37 currently in stock
- 100 more available, earliest Nov 16, 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.
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| Product image |  |  |  |  |  |  |
|---|---|---|---|---|---|---|
| Item | This item — Sanzo Power TX-B2-075H-124202 | Acme Electric T181052 | Jefferson Electric 416-1141-000 | Hammond Power Solutions QC75ERCB | Federal Pacific K1XGF12-.750 | SolaHD HS19F750B |
| Price | $375.14 | $694.00 | $668.00 | $720.00 | $705.00 | $732.00 |
| Availability | ✔ In Stock: 37 — In-stock units ship same business day | Ships in 10-14 weeks | Ships in 8-12 weeks | Ships in 10-14 weeks | Ships in 12-16 weeks | Ships in 12-16 weeks |
| Actions | Add to Cart | View | View | View | View | View |
| Brand | Sanzo Power | Acme Electric | Jefferson Electric | Hammond Power Solutions | Federal Pacific | SolaHD |
| Capacity | 750 VA | 0.75 | 0.75 | 0.75 | 0.75 | 0.75 |
| Primary Voltage | 120/240V | 120/240V | 120/240V | 120/240V | 120/240V | 120/240V |
| Secondary Voltage | 12/24V | 12/24V | 12/24V | 12/24V | 12/24V | 12/24V |
| Phase | Single Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase | Single-Phase |
Specifications
| Brand | Sanzo Power |
| Capacity | 0.75 kVA |
| Primary Voltage | 120/240V |
| Secondary Voltage | 12/24V |
| Phase | Single Phase |
| Max Primary OCP | 10A |
| Conduit Knockout | 3/4" NPT |
| Frequency | 50/60 Hz |
| Temperature Rise | 115°C |
| Insulation | 180°C |
| Configuration | Resin-Encapsulated |
| Part # | TX-B2-075H-124202 |
| 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) | 5.43 × 10.08 × 4.49 in |
| Weight | 22 lb |
Product Description
The TX-B2-075H-124202 is a 750 VA single-phase, resin-encapsulated buck-boost transformer. It has a dual 120/240V primary winding and a 12/24V low-voltage winding — these are the transformer’s windings, not a 120/240V-to-12/24V 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 12/24V.
Housed in a NEMA 3R steel enclosure (ANSI 70 light grey) for indoor or outdoor mounting with 3/4" NPT conduit knockouts, aluminum windings, Class 180°C insulation, 115°C rise, 50/60 Hz, no taps, cETLus listed.