Choosing between two 50kVA 3-phase power transformers starts with one question: does your system need voltage to come down or go up? In the inverters power conversion space, a step-down unit and a step-up unit may look similar, but the primary and secondary voltage ratings define the entire job. Both of these Xing Laser units are 3-phase autotransformers, so your decision rests on conversion direction and packaging condition. Before choosing, confirm the line voltage feeding the unit and the voltage your equipment requires.
Quick verdict
Pick the 50kVA Step Down Transformer 480V to 208V Industrial Power Converter 3 Phase when your incoming feed is 480V three-phase and downstream equipment expects 208V. Pick the 50kVA Step Up Transformer 240V to 380V Industrial Power Converter - NEW when you need to raise 240V three-phase supply to 380V.
At a glance
| Feature | 50kVA Step Down Transformer 480V to 208V | 50kVA Step Up Transformer 240V to 380V |
|---|---|---|
| Listed price | USD 1,050.00 | USD 1,050.00 |
| Conversion function | Step-down | Step-up |
| Primary / secondary voltage | 480V / 208V | 240V / 380V |
| Phases | 3 | 3 |
| Maximum operating frequency | 60 Hz | 60 Hz |
| Max resistive / inductive load | 40 kVA / 30 kVA | 40 kVA / 30 kVA |
| Condition | New | New - Open box |
Where each product fits
- Choose the 480V-to-208V step-down if a 480V three-phase input needs to become 208V for your equipment. It is listed as new and its step-down pairing matches that path.
- Choose the 240V-to-380V step-up if a 240V three-phase input must be raised to 380V. It is listed as New - Open box, so the packaging may already be opened.
Product notes
50kVA Step Down Transformer 480V to 208V Industrial Power Converter 3 Phase
This step-down autotransformer is the one to consider when incoming power is 480V three-phase and your target voltage is 208V. It converts AC to AC at 60 Hz, uses three phases, and is listed as new. Built-in ventilation supports continuous operation in industrial environments. The clear limitation is the fixed voltage pairing: it steps down from 480V to 208V only, so it will not help if your supply is 240V or your equipment needs 380V. If you have 480V coming in and 208V going out, this unit's conversion direction matches that workflow.
50kVA Step Up Transformer 240V to 380V Industrial Power Converter - NEW
This step-up autotransformer is listed as New - Open box, so expect the original box to have been removed during customs inspection. It accepts 240V three-phase input and raises it to 380V output, also at 60 Hz and AC to AC. Built-in ventilation supports continuous operation in industrial environments. The step-up function is the core reason to choose it: it converts 240V three-phase to 380V three-phase, making it a direct fit for equipment rated at the higher voltage. The main limitation to consider is the condition detail: even though the title includes NEW, the condition is New - Open box, which may matter if the original packaging is important to you.
Final choice by use case
For a 480V input that needs to feed 208V equipment, go with the 50kVA Step Down Transformer 480V to 208V Industrial Power Converter 3 Phase. For a 240V input that must be raised to 380V, the 50kVA Step Up Transformer 240V to 380V Industrial Power Converter - NEW is the matching unit. Both are 50kVA 3-phase autotransformers at the same listed price, so the voltage conversion direction is the decisive factor.
