Choosing an isolation transformer starts with a practical question: what voltage are you feeding, and how much power does the load actually need? Pick too small and your circuit may not get enough voltage or current. Pick too large and you could pay for enormous capacity you'll never use. These two listed options sit on opposite ends of that range. The 30kVA 3-Phase Industrial Power Converter is listed at USD 3,462.89, while the 24V Multi-Tap Isolation Transformer is listed at USD 33.29. Both are described as new.
Quick Verdict
If you're running three-phase industrial equipment or need EMI filtering for sensitive systems, the 30kVA unit is the one that fits the job. If you only need to power 24V HVAC controls, relays, or gas valves, the 24V transformer offers a low-cost step-down path.
At a Glance
| Product | Price | Price Bar | Power Rating | Primary Voltage | Best For |
|---|---|---|---|---|---|
| 30kVA 3-Phase Industrial Isolation Transformer | USD 3,462.89 | 30 kVA | 450 V AC | Three-phase industrial equipment, labs, EMI-sensitive systems | |
| 24V Multi-Tap Isolation Transformer | USD 33.29 | 40 VA | 120/208/240 V AC | HVAC controls, relays, gas valves |
Where Each Product Wins
- 30kVA 3-Phase Industrial Isolation Transformer: Wins on power capacity, three-phase support, and the listed Schaffner industrial EMC filter.
- 24V Multi-Tap Isolation Transformer: Wins on price, low-voltage step-down flexibility, and multi-tap primary coverage.
30kVA Isolation Transformer | 3-Phase Industrial Power Converter | New in BOX
This brand-new three-phase unit is rated for 30kVA with a 450V AC primary and a 40A primary current. It includes a Schaffner FN3270H-55-34 industrial EMC/EMI filter, which is useful in applications where clean power matters. The robust metal housing has integrated wheels for easier handling, and the listing describes it as ideal for industrial machinery, laboratories, or sensitive electrical distribution systems. The reason to choose it is the combination of high capacity and three-phase isolation. The limitation is its price: USD 3,462.89 is a substantial investment, and the 450V primary won't suit low-voltage single-phase control circuits.
24V Multi-Tap Isolation Transformer
This step-down transformer accepts 120/208/240V AC primary and outputs 24V AC at 40VA, with a current rating of 1.66A and 50/60Hz operation. It's aimed at HVAC and industrial controls, including circuits, relays, and gas valves. The listing states no-load voltage readings between 26.6V and 27.5V. The reason to choose it is the low listed price of USD 33.29 and multi-tap versatility for common line voltages. The limitation is the 40VA capacity, which is only suitable for small control loads and won't handle three-phase industrial power.
Final Choice by Use Case
Go with the 30kVA three-phase unit if your equipment requires three-phase isolation at 450V and you need the higher power capacity. Go with the 24V multi-tap transformer if you're wiring a 24V HVAC control circuit, relay, or gas valve and want a straightforward, low-cost step-down option.
