Ordered the wrong unit, or not sure if a product is right for you? Our free exchange policy has you covered! We’ll cover freight both ways and send you a replacement free of charge.

3-Phase 480 Pri 208Y/120 Sec Encapsulated Transformer

Size Guide SKU # MIT-ENC-300-CU
$1,975.00 IN STOCK CALL FOR LEAD-TIME 866-719-1882

Delivers in 5-7 business days

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This resin encapsulated (AKA "potted" or "TENV") transformer steps down three-phase 480v to 208Y/120.

NEMA 4 (TENV) outdoor/indoor rated enclosure, and completely resin encapsulated core and coils makes it the perfect fit for dusty, moist, or corrosive environments.

Encapsulated transformers are made to provide a lifetime of trouble-free performance.

This transformer is designed to run equipment such as panels, motors, pumps, CNC machines, welders, conveyor systems, printing equipment, fabrication tools, and other business machines.

Need something different? Contact us for a custom quote: 600vsales@maddoxtransformer.com

Product Specifications:

  • Adjustment Taps
  • NEMA 3R Enclosure
  • Copper windings up to 5 kVA
  • 80°C Rise up to 3 kVA
  • 115°C Rise 5 kVA and up
  • 130°C Class up to 3 kVA
  • 180°C Class 5 kVA and up
  • Fully Resin Encapsulated Core & Coil
  • Mild Steel Enclosure
  • Knock-Outs For Easy Install
  • 60Hz Frequency
  • UL and cUL Listed
  • DOE 2016 Efficient

Shipping Rates
Shipping rates vary, but generally range between 5-10% of the total purchase price.

Shipping From
Transformers shipping from stock deliver within 3-5 business.  Maddox has 22 regional fulfillment centers so delivery is never a few days out!

Maddox Fulfillment Centers

Returns and Exchanges

Our policy lasts 30 days. If 30 days have gone by since your purchase, we unfortunately cannot offer you a refund or exchange. We still may be interested in buying the unit back. We require proof of purchase in order to process a return or exchange.


To be eligible...

Read more here: Shipping, Return and Refund Policy

5 Year Warranty

Buy with confidence. All new and used Maddox transformers are tested and come with a full 5 year warranty against defects. If you experience any problems just give us a call and receive a replacement, free of charge. We'll even pay the shipping!