Selecting inverters power conversion equipment starts with one non-negotiable question: are you stepping voltage up or stepping it down? The listed transformers cover four distinct three-phase routes-240V to 380V, 208V to 380V, 208V to 480V, and 480V to 380V. Choosing the wrong input-to-output route defeats the purpose, even when the kVA figure looks appealing.
Quick take
The two 30kVA step-up choices are aimed at different incoming voltages: choose 240V to 380V or 208V to 380V based on the supply you need to convert. The 50kVA Step Up Transformer 208V to 480V Industrial Power Converter 3 Phase carries the highest listed price and the highest stated resistive and inductive load capacities. The 50kVA Step Down Transformer 480V to 380V Industrial Power Converter is the only model that reduces voltage rather than raising it, but it is listed as New - Open box and described without an original box.
All four are three-phase AC-to-AC power transformers with a maximum operating frequency of 60 Hz. The listed-price spread is $100, so voltage route and load guidance are likely to matter more than price alone.
Listed price comparison
| Transformer | Voltage conversion | Listed price | Price bar |
|---|---|---|---|
| 30kVA Step Up Transformer 240V to 380V Industrial Power Converter | 240V to 380V step-up | USD 950.00 | |
| 50kVA Step Up Transformer 208V to 480V Industrial Power Converter 3 Phase | 208V to 480V step-up | USD 1,050.00 | |
| 30kVA Step Up Transformer 208V to 380V Industrial Power Converter | 208V to 380V step-up | USD 950.00 | |
| 50kVA Step Down Transformer 480V to 380V Industrial Power Converter | 480V to 380V step-down | USD 1,050.00 |
Decision matrix
- For a 240V supply that must become 380V: the 30kVA Step Up Transformer 240V to 380V Industrial Power Converter is the direct voltage match.
- For 208V input and 380V output: select the 30kVA Step Up Transformer 208V to 380V Industrial Power Converter rather than the 240V-input version.
- For 208V input and 480V output: the 50kVA Step Up Transformer 208V to 480V Industrial Power Converter 3 Phase is the route-specific choice, with stated maximum capacities of 40kVA for resistive loads and 30kVA for inductive loads.
- For reducing 480V to 380V: the 50kVA Step Down Transformer 480V to 380V Industrial Power Converter is the only listed step-down route; factor in its New - Open box condition.
Product notes
30kVA Step Up Transformer 240V to 380V Industrial Power Converter
This Xing Laser unit makes sense when the project specifically calls for moving from 240V AC to 380V AC in a three-phase setup. Its stated maximum load guidance is 24kVA for resistive loads and 18kVA for inductive loads, giving a clearer working limit than relying on the 30kVA title alone. The listed 80% resistive-load and 60% inductive-load limits reinforce that it should be selected around the actual load type, not just the transformer's headline rating. Its limitation is straightforward: it is not the match for a 208V incoming supply, since its primary voltage rating is 240V.
50kVA Step Up Transformer 208V to 480V Industrial Power Converter 3 Phase
Choose this Xing Laser transformer when the required conversion is 208V AC up to 480V AC and the stated load guidance needs to reach beyond the 30kVA step-up models. It lists maximum capacities of 40kVA for resistive loads and 30kVA for inductive loads. That makes it the clearest fit of the group for the 208V-to-480V route and for applications operating within those stated limits. The trade-off is its conversion destination: it produces 480V, not 380V, so it does not replace either of the 380V step-up transformers. Its listed price is at the upper end of this comparison.
30kVA Step Up Transformer 208V to 380V Industrial Power Converter
For a three-phase 208V source that needs to feed a 380V destination, this Xing Laser model is the direct step-up choice. Like the 240V-to-380V 30kVA model, it states maximum capacities of 24kVA for resistive loads and 18kVA for inductive loads, along with the same 80% and 60% load limits. This makes it a practical alternative when the output target is 380V but the available input is 208V rather than 240V. Its key constraint is the 380V secondary rating: shoppers needing 480V output should instead use the dedicated 208V-to-480V step-up model.
50kVA Step Down Transformer 480V to 380V Industrial Power Converter
The XING Laser step-down transformer is the distinct choice for installations that begin at 480V AC and need 380V AC output. Unlike the other three entries, its conversion function is step-down, so it serves a different voltage-direction requirement rather than competing directly with the step-up units. The three-phase AC-to-AC design and 60 Hz maximum operating frequency keep it within the same general power-conversion group. Its concrete limitation is condition: it is listed as New - Open box, and the description states that there is no original box. That condition may be decisive for buyers who require a new unit rather than an open-box one.
Final recommendation by use case
Pick the 30kVA Step Up Transformer 240V to 380V Industrial Power Converter for 240V-to-380V conversion. Choose the 30kVA Step Up Transformer 208V to 380V Industrial Power Converter when the source is 208V and the target remains 380V. For a 208V-to-480V route with the highest stated load guidance here, select the 50kVA Step Up Transformer 208V to 480V Industrial Power Converter 3 Phase. Choose the 50kVA Step Down Transformer 480V to 380V Industrial Power Converter only when the job calls for reducing 480V to 380V and its open-box condition suits the requirement.
