350 VA Buck-Boost Base Transformer, 120/240V × 12/24V, Single Phase
by Sanzo Power · Part # TX-B2-035H-124202
4.9 out of 5 · 266 customer reviews(opens the reviews page)$234.47
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Sanzo Power 350 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.
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| Product image |  |  |
|---|---|---|
| Item | This item — Sanzo Power TX-B2-035H-124202 | Hammond Power Solutions QC35ERCB |
| Price | $234.47 | $450.00 |
| Availability | Ships in 5-6 weeks | Ships in 10-14 weeks |
| Actions | Add to Cart | View |
| Brand | Sanzo Power | Hammond Power Solutions |
| Capacity | 350 VA | 0.35 |
| Primary Voltage | 120/240V | 120/240V |
| Secondary Voltage | 12/24V | 12/24V |
| Phase | Single Phase | Single-Phase |
Specifications
| Brand | Sanzo Power |
| Capacity | 0.35 kVA |
| Primary Voltage | 120/240V |
| Secondary Voltage | 12/24V |
| 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-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) | 4.65 × 9.25 × 3.86 in |
| Weight | 14 lb |
Product Description
The TX-B2-035H-124202 is a 350 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 1/2" NPT conduit knockouts, aluminum windings, Class 180°C insulation, 115°C rise, 50/60 Hz, no taps, cETLus listed.