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Maddox 3-phase 480V delta to 208Y/120V step-down transformer, 150 kVA (MIT-DRY-105)

Name: Maddox 3-phase 480V delta to 208Y/120V step-down transformer, 150 kVA (MIT-DRY-105)
Brand: Maddox
SKU: MIT-DRY-105

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Device typeStep-down transformer Input voltage480 V delta Output voltage208Y/120 V PowerNot stated Maximum output current416 A IsolationNot stated

Key specs

Units

SKU: MIT-DRY-105
Official store listing
Sources
Maddox's store data lists SKU MIT-DRY-105 for the variant "150 kVA / New / Aluminum (standard)" of its "3-Phase 480V Delta - 208 Y 120" transformer.
Official store listing: Maddox store Checked Oct 30, 2026 · Earlier document
Location: Store product data, product.variants (title, sku)
Documented
AC configuration: 3-phase
Official product page
Sources
Printed as "convert 3-phase 480v to 3-phase 208v/120" and in the product name "3-Phase 480V Delta - 208 Y 120".
Official product page: Maddox store product page: 3-Phase 480V Delta - 208 Y 120 (October 30, 2026 capture) Checked Oct 30, 2026 · Earlier document
Location: Overview
Documented
Weight: 544.31 kg1,200 lb converted
Converted: 1200 lb x 0.45359237 kg/lb, rounded to 0.01 kg
Official product page
Sources
Converted: 1200 lb x 0.45359237 kg/lb, rounded to 0.01 kg
Printed as 1200 lbs in the row "150 45"x33"x33" 1200" of a table Maddox labels "Approximate Enclosure Dimensions & Weights"; an approximate weight, printed in pounds only and converted.
Official product page: Maddox store product page: 3-Phase 480V Delta - 208 Y 120 (October 30, 2026 capture) Checked Oct 30, 2026 · Earlier document
Location: Dimensions & Weights, 150 kVA row, Weight (lbs)
Converted
Device type: Step-down transformer
Official store listing
Sources
Maddox's store data tags the product's type as "Step down"; the page's overview says "This transformer is designed to convert 3-phase 480v to 3-phase 208v/120".
Official store listing: Maddox store Checked Oct 30, 2026 · Earlier documentOfficial product page: Maddox store product page: 3-Phase 480V Delta - 208 Y 120 (October 30, 2026 capture) Checked Oct 30, 2026 · Earlier document
Location: Store product data, tags; product page, Overview
Documented
Dimensions: 803.05 L
Calculated: Enclosure volume: W × H × D ÷ 1,000,000
W: 838.2 × H: 1,143 × D: 838.2 mmW: 33 × H: 45 × D: 33 inOfficial product page
Sources
Converted: 45 x 33 x 33 in x 25.4 mm/in, rounded to 0.1 mm
Printed as "150 45"x33"x33" 1200" under "Dimensions & Weights kVA Dimensions (HxWxD) Weight (lbs)", in inches, in a table Maddox labels "Approximate Enclosure Dimensions & Weights"; approximate enclosure figures.
Official product page: Maddox store product page: 3-Phase 480V Delta - 208 Y 120 (October 30, 2026 capture) Checked Oct 30, 2026 · Earlier document
Location: Dimensions & Weights, 150 kVA row
Calculated
Rated power (VA): 150,000 VA
Converted: 150 kVA x 1000 VA/kVA = 150000 VA
Official store listing
Sources
Converted: 150 kVA x 1000 VA/kVA = 150000 VA
Printed as the size option "150 kVA" whose new, aluminum-winding variant carries SKU MIT-DRY-105.
Official store listing: Maddox store Checked Oct 30, 2026 · Earlier documentOfficial product page: Maddox store product page: 3-Phase 480V Delta - 208 Y 120 (October 30, 2026 capture) Checked Oct 30, 2026 · Earlier document
Location: Store product data, variant "150 kVA / New / Aluminum (standard)" (SKU MIT-DRY-105); product page, Size Guide
Converted
AC frequency: 60 Hz
Official product page
Sources
Printed once for every size as "60 Hz Frequency".
Official product page: Maddox store product page: 3-Phase 480V Delta - 208 Y 120 (October 30, 2026 capture) Checked Oct 30, 2026 · Earlier document
Location: Overview, Transformer Specifications
Documented
Input voltage: 480 V delta
Official product page
Sources
Printed once for every size as "Primary Voltage: 480 Delta".
Official product page: Maddox store product page: 3-Phase 480V Delta - 208 Y 120 (October 30, 2026 capture) Checked Oct 30, 2026 · Earlier document
Location: Overview, Primary Voltage
Documented
Output voltage: 208Y/120 V
Official product page
Sources
Printed once for every size as "Secondary Voltage: 208 Y 120".
Official product page: Maddox store product page: 3-Phase 480V Delta - 208 Y 120 (October 30, 2026 capture) Checked Oct 30, 2026 · Earlier document
Location: Overview, Secondary Voltage
Documented

All specs9

AC configuration: 3-phase
Official product page
Sources
Printed as "convert 3-phase 480v to 3-phase 208v/120" and in the product name "3-Phase 480V Delta - 208 Y 120".
Official product page: Maddox store product page: 3-Phase 480V Delta - 208 Y 120 (October 30, 2026 capture) Checked Oct 30, 2026 · Earlier document
Location: Overview
Documented
Weight: 544.31 kg1,200 lb converted
Converted: 1200 lb x 0.45359237 kg/lb, rounded to 0.01 kg
Official product page
Sources
Converted: 1200 lb x 0.45359237 kg/lb, rounded to 0.01 kg
Printed as 1200 lbs in the row "150 45"x33"x33" 1200" of a table Maddox labels "Approximate Enclosure Dimensions & Weights"; an approximate weight, printed in pounds only and converted.
Official product page: Maddox store product page: 3-Phase 480V Delta - 208 Y 120 (October 30, 2026 capture) Checked Oct 30, 2026 · Earlier document
Location: Dimensions & Weights, 150 kVA row, Weight (lbs)
Converted
Device type: Step-down transformer
Official store listing
Sources
Maddox's store data tags the product's type as "Step down"; the page's overview says "This transformer is designed to convert 3-phase 480v to 3-phase 208v/120".
Official store listing: Maddox store Checked Oct 30, 2026 · Earlier documentOfficial product page: Maddox store product page: 3-Phase 480V Delta - 208 Y 120 (October 30, 2026 capture) Checked Oct 30, 2026 · Earlier document
Location: Store product data, tags; product page, Overview
Documented
Dimensions: 838.2 D × 838.2 W × 1,143 H mm33 D × 33 W × 45 H in
Converted: 45 x 33 x 33 in x 25.4 mm/in, rounded to 0.1 mm
Official product page
Sources
Converted: 45 x 33 x 33 in x 25.4 mm/in, rounded to 0.1 mm
Printed as "150 45"x33"x33" 1200" under "Dimensions & Weights kVA Dimensions (HxWxD) Weight (lbs)", in inches, in a table Maddox labels "Approximate Enclosure Dimensions & Weights"; approximate enclosure figures.
Official product page: Maddox store product page: 3-Phase 480V Delta - 208 Y 120 (October 30, 2026 capture) Checked Oct 30, 2026 · Earlier document
Location: Dimensions & Weights, 150 kVA row
Converted
Rated power (VA): 150,000 VA
Converted: 150 kVA x 1000 VA/kVA = 150000 VA
Official store listing
Sources
Converted: 150 kVA x 1000 VA/kVA = 150000 VA
Printed as the size option "150 kVA" whose new, aluminum-winding variant carries SKU MIT-DRY-105.
Official store listing: Maddox store Checked Oct 30, 2026 · Earlier documentOfficial product page: Maddox store product page: 3-Phase 480V Delta - 208 Y 120 (October 30, 2026 capture) Checked Oct 30, 2026 · Earlier document
Location: Store product data, variant "150 kVA / New / Aluminum (standard)" (SKU MIT-DRY-105); product page, Size Guide
Converted
AC frequency: 60 Hz
Official product page
Sources
Printed once for every size as "60 Hz Frequency".
Official product page: Maddox store product page: 3-Phase 480V Delta - 208 Y 120 (October 30, 2026 capture) Checked Oct 30, 2026 · Earlier document
Location: Overview, Transformer Specifications
Documented
Input voltage: 480 V delta
Official product page
Sources
Printed once for every size as "Primary Voltage: 480 Delta".
Official product page: Maddox store product page: 3-Phase 480V Delta - 208 Y 120 (October 30, 2026 capture) Checked Oct 30, 2026 · Earlier document
Location: Overview, Primary Voltage
Documented
Output voltage: 208Y/120 V
Official product page
Sources
Printed once for every size as "Secondary Voltage: 208 Y 120".
Official product page: Maddox store product page: 3-Phase 480V Delta - 208 Y 120 (October 30, 2026 capture) Checked Oct 30, 2026 · Earlier document
Location: Overview, Secondary Voltage
Documented
Maximum output current: 416 A
Official product page
Sources
The size guide prints "150 180 416" under the headings "Size Guide kVA Amps at 480v Amps at 208 Y 120": 416 A at 208 Y 120 (the secondary) and 180 A at 480 V (the primary) for 150 kVA. It is the rated current of the size; Maddox prints no separate maximum.
Official product page: Maddox store product page: 3-Phase 480V Delta - 208 Y 120 (October 30, 2026 capture) Checked Oct 30, 2026 · Earlier document
Location: Size Guide, 150 kVA row, Amps at 208 Y 120
Documented

Published claims and calculations, not independent test results.

Documents

1 on file

WEB
Maddox store product page: 3-Phase 480V Delta - 208 Y 120 (October 30, 2026 capture)OfficialMaddoxOfficial product page
Source details
Revision
Not stated
Revision date
Not stated
Archived copy captured on 2026-10-30.
Location: Overview; Transformer Specifications; Size Guide; Dimensions & Weights; Warranty
Retrieved Oct 30, 2026
Maddox's own web store page for its 3-phase 480 V delta primary, 208Y/120 V secondary transformer (store.maddox.com, linked as the shop from maddox.com), captured on October 30, 2026 between 14:43 and 14:49 UTC with the paced research fetcher (HTTP 200). It prints the primary and secondary voltages, the frequency, temperature rise, taps and insulation class once for every size, a size guide of amps per kVA, an approximate enclosure dimensions and weights table per kVA, and the warranty; the page shows the SKU of the selected size only (MIT-DRY-100). Manufacturer claims, not independent tests.
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Warranty

Product warranty: 5 years
Official product page
Sources
Printed as "All new and used Maddox transformers are tested and come with a full 5 year warranty against defects."
Official product page: Maddox store product page: 3-Phase 480V Delta - 208 Y 120 (October 30, 2026 capture) Checked Oct 30, 2026 · Earlier document
Location: Warranty
Documented

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Price history

$9,729

Prices we read at Current Connected · 14 readings · no change in our readings since Oct 30, 2026

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Since Oct 30, 2026 · Listing price (USD)

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Current Connected$9,729Nov 12, 2026, 1:26 AM PSTLatest check · hover or tap for earlier prices

Price data

Collected price observations by seller
Checked (UTC)	Seller	Price
Oct 30, 2026, 6:17 AM PDT	Current Connected Paid link.	$9,729
Oct 31, 2026, 1:26 AM PDT	Current Connected Paid link.	$9,729
Nov 1, 2026, 1:06 AM PDT	Current Connected Paid link.	$9,729
Nov 2, 2026, 1:36 AM PST	Current Connected Paid link.	$9,729
Nov 3, 2026, 1:06 AM PST	Current Connected Paid link.	$9,729
Nov 4, 2026, 1:06 AM PST	Current Connected Paid link.	$9,729
Nov 5, 2026, 1:06 AM PST	Current Connected Paid link.	$9,729
Nov 6, 2026, 1:06 AM PST	Current Connected Paid link.	$9,729
Nov 7, 2026, 1:16 AM PST	Current Connected Paid link.	$9,729
Nov 8, 2026, 1:16 AM PST	Current Connected Paid link.	$9,729
Nov 9, 2026, 1:16 AM PST	Current Connected Paid link.	$9,729
Nov 10, 2026, 1:06 AM PST	Current Connected Paid link.	$9,729
Nov 11, 2026, 1:36 AM PST	Current Connected Paid link.	$9,729
Nov 12, 2026, 1:26 AM PST	Current Connected Paid link.	$9,729

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Model: MIT-DRY-105

Manufacturer SKU MIT-DRY-105

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