3-Phase 480V Delta - 480 Y 277 (Isolation Transformer)
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) core
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer)
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) side view
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) back view
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) on a pallet ready to ship
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) connections
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) taps
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) connections
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) grounding strap
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) core
How to install a 3-phase transformer video thumbnail
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer)
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) core
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer)
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer)
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) side view
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) taps
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) connections
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) connections
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) core
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) grounding strap
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) connections
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) core
How to install a 3-phase transformer video thumbnail
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer)
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer)
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) core
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) side view
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer)
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) connections
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) connections
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) core
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) core
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) grounding strap
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) connections
3-Phase 480V Delta - 480 Y 277 (Isolation Transformer) core
How to install a 3-phase transformer video thumbnail

3-Phase 480V Delta - 480 Y 277 (Isolation Transformer)

SKU: MIT-DRY-151
Size:

Size

New

$1,686

Used

$1,349
Quantity:

Estimated Delivery Date: (call to expedite)

Transformer is in stock! Delivers in 5 - 7 business days

 

Overview

This transformer is designed to convert 3-phase 480v Delta 3-wire to 3-phase 480v Wye 4-wire with a fully rated neutral with a 277v phase-to-neutral voltage to run equipment such as panels, lighting, motors, CNC machines, welders, conveyor systems, pumps, printing equipment, fabrication tools, and other business machines. Many customers use this transformer to create a fully isolated 480v circuit from their main circuit.

Not sure what to buy? Find out more about how to buy the right transformer.


Primary Voltage: 480 Delta

Secondary Voltage: 480 Y 277

Transformer Specifications:

 

  • 60 Hz Frequency
  • 150°C Temperature Rise
  • Primary Adjustment Taps 2 above, 4 below in 2.5% increments
  • High Efficiency Aluminum Windings
  • 220°C Insulation Class
  • Vacuum pressure Impregnated Windings
  • Energy Efficient

Transformer may appear different than pictured.

 


Size Guide

kVA Amps at 480v Amps at 480 Y 277
15 18 18
30 36 36
45 54 54
75 90 90
112.5 135 135
150 180 180
225 271 271
300 361 361
500 601 601

Dimensions & Weights

 

kVA Dimensions (HxWxD) Weight (lbs)
15 22"x21"x20" 205
30 29"x26"x24" 300
45 29"x26"x24" 370
75 36"x28"x27" 535
112.5 41"x32"x22" 725
150 41"x32"x22" 860
225 52"x37.5"x34" 1450
300 52"x37.5"x34" 1950
500 64"49"41.5" 2950


 Approximate Enclosure Dimensions & Weights

Shipping rates vary, but are generally 10% of the total purchase price.

Transformers deliver in 5-7 business days.

Read more here: Shipping Policy

Ordered the wrong unit, or not sure if a product is right for you? Our web store exchange policy has you covered! We’ll send you a replacement transformer, all you pay for is shipping, plus the difference in unit price. Our policy lasts 30 days. If 30 days have gone by since your purchase, we cannot offer you a refund or exchange, but we still may be interested in buying the unit back. Proof of purchase is required to process a return or exchange.

Read more here: Return and Refund Policy

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!

Read more here: Warranty, Terms and Conditions

Reviews from our customers:

“I spoke with Josh Long and he was the most knowledgeable sales rep on transformers I had the pleasure of speaking with during my 2 month long ordeal to find a very specific transformer for my machine from overseas. I really appreciate his expertise on the matter and I look forward to working Josh again.”

Hien Tran

“I love this company. I'm an electrical contractor and I use them for all my transformer needs and recommend them wherever I can. Josh Long and Chris Stouffer always return my calls and answer my emails. They provide a great, personalized service. It's nice to go straight to the source to buy rather than going through an electrical supply house or another middle man.”

Naomi Doire

“Your service and response was impeccable. The equipment quality is excellent. It was a pleasure to work with Jeremiah. He was fantastic, sent me all the drawings and paperwork superfast. Can't wait to need another transformer. Thank you very much.”

Elliott Foy