# Step-down transformer

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*Current manufacturer information: Functional Devices model TR50VA008*

<p class="callout warning">Stepdown transformers are intended only to power 120V equipment off higher voltage service. To measure 480V delta systems (no neutral), 600V delta systems (no neutral), or 347/600V Wye, please use the [EV1000 High Voltage Sensors](https://egauge.net/support/m/ev1000).</p>

<table border="0" id="bkmrk-step-down-transforme" style="width: 100%; border-collapse: collapse; border-style: hidden;"><tbody><tr><td style="width: 100%;">[![step-down-fdt-tr50va.jpg](https://kb.egauge.net/uploads/images/gallery/2020-06/scaled-1680-/step-down-fdt-tr50va.jpg)](https://kb.egauge.net/uploads/images/gallery/2020-06/step-down-fdt-tr50va.jpg)</td></tr><tr><td class="align-center" style="width: 100%;">*Step-down transformer (480/277/240/208 to 120V)*</td></tr></tbody></table>

208/240/277/480V to 120Vac, dual hub, 50VA UL Listed transformer. Used for monitoring 480V delta services and powering 120V accessories from higher voltage systems.

<p class="callout warning">Transformers provided by eGauge are 50VA (50 watts limit at 1.0 power factor, lower wattage when power factor &lt; 1). They are intended to be used for powering a small amount of equipment provided by eGauge. Attempting to supply loads ~50VA or higher will cause the transformer to trip and require a manual reset.</p>

## Specifications

#### [Full specs (data-sheet PDF)](https://www.egauge.net/media/support/docs/TR50VA008.pdf "Full specs (data-sheet PDF)")

- VA Rating: 50
- Frequency: 50/60 Hz
- Mounting: Foot &amp; Dual Threaded Hubs
- Over Current Protection: Circuit Breaker
- Dimensions: 3.440 ̋ x 2.510 ̋ x 3.012 ̋ (w/ .500 ̋ NPT Hubs)
- Wire Length: 9.5 ̋ Typical w/ .5 ̋ Strip
- Operating Temperature: -30 to 140° F
- MTBF: 100,000 Hours @ 77° F
- Construction: Split-Bobbin
- Weight: 3.04 lbs.
- Approvals: UL5085-2 Listed General Purpose, US / Canada, CE, RoHS

## Hardware included

- Step-down transformer

## Assembly/installation information

Follow instructions included with transformer, ensure correct primary and secondary wires are used.

## Documents

[Spec Sheet](https://www.egauge.net/media/support/docs/TR50VA008.pdf)

## Related Information

- [277V Powered Enclosure Kit](https://kb.egauge.net/books/egauge-hardware-product-pages/page/product-page-powered-enclosure-kit-%28277480vac%29 "Product Page: Powered Enclosure Kit (277/480VAC)")
- [Potential Transformer Configuration](https://kb.egauge.net/books/egauge-meter-configuration/page/potential-transformer-configuration "Potential Transformer Configuration")
- [Monitoring 480V and 600V systems](https://kb.egauge.net/books/egauge-installation/page/monitoring-480v-and-600v-delta-systems)
- [EV1000 High Voltage Sensor](https://egauge.net/support/m/ev1000)