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Power Distribution Panels with KVA Transformers - 150 KVA Power Distribution - 480V to 208Y/120V 3PH - (3) 460R7W (3) 460R9W (12) GFCI Duplex You're NOT logged in, Please log in   

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150 KVA Power Distribution - 480V to 208Y/120V 3PH - (3) 460R7W (3) 460R9W (12) GFCI Duplex

Part # MGS-3X480.60A-150K-3X208.60A-12X120    Price: $27,489.43

Spec Sheet   


Made in Texas

The Larson Electronics MGS-3X480.60A-150K-3X208.60A-12X120 power distribution substation converts 480VAC electrical current to 208Y/120VAC three-phase. This unit provides operators the ability to safely tap into and distribute 480VAC power from a variety of sources including generators and direct grid power.


Portable Power Distribution Purpose and Use
The MGS-3X480.60A-150K-3X208.60A-12X120 temporary power distribution system gives operators the ability to power their 480V, 240V, and 120V equipment from a single system. On the primary side, operators connect 480V line-in power using 50` of 350 Type W cord which feed 400A Main Breaker panel with three, 460R7W receptacles for 480V equipment. On the secondary side, an 400A Main Breaker panel with three, 460R9W receptacles for 240V equipment and twelve, GFCI duplex receptacles for 120V equipment. All receptacles are equipped with weatherproof covers.

Operation: A 50` of 350 Type W line-in cord brings 480V three-phase power into the NEMA 3R 400A 480V three phase main circuit breaker panel, which contains three, 60A 480V 3P breakers protecting three, 60A 480V 460R7W receptacles, and passes power to the transformer. The NEMA 3R 150KVA transformer converts 480V to 208Y/120V three phase and passes the current to the secondary panel. The secondary side of the transformer feeds a NEMA 3R 400A 208Y/120V three phase main circuit breaker panel. This secondary panel contains three, 60A 250V 3P breakers protecting three, 60A 250V 460R9W receptacles and twelve, 20A 125V 1P breakers protecting twelve, 20A 125V GFCI duplex receptacles.

Click Photo to Enlarge

Protective Construction: Unlike many portable power distribution boxes made of plastic and utilizing thin gauge, low grade metals in their construction, this unit is designed for serious use and is ruggedly constructed to withstand demanding conditions and heavy duty industrial applications. The transformer and load assembly is mounted on a 3/16" thick carbon steel mounting platform and the load center/distribution assembly is mounted to the standard 2" x 2" x 1/8" square carbon steel tubing frame, resulting in an extremely stable, durable and well protected power distribution platform. This model is equipped with forklift skid pockets, locking polyurethane casters, and a top located lifting eyelet allows easy lifting with cable or chain hooks. This can be replaced with stainless steel, hot dip galvanized steel, or aluminum depending on the customer’s needs for an additional cost. Larger units are available upon request, and can be equipped with skids or trailer mounted.

Certification: Larson Electronics is a UL 1640 panel shop and certified to build portable power distribution systems. All units are built in accordance to NFPA 70 (National Electric Code) and certified to UL 1640. All equipment is NEMA 3R rated for indoor and outdoor use and provide a degree of protection against dirt, water, and ice. NEMA 4 and NEMA 4X equipment can be equipped upond request.

Grounding: Transformer is grounded to the frame and we provide a grounding lug on the frame for the earth ground.
~Please check all motor loads for dual rated motors that will work 208 or 240.~

Applications: This power distribution system is ideal for indoor or outdoor use and applications including but not limited to, construction sites, plant maintenance, plant turnarounds, shows, exhibits, and shipyard operations. These power distribution systems are popularly used in applications where external power sources are often necessary. We also offer class rated transformers for use within explosion proof and hazardous location environments.

Custom Built Systems Available: Larson Electronics is a manufacturer and we can build portable power distribution systems to your specifications. Although we carry several models of portable power distribution systems in stock, we can deliver custom ordered units almost as quickly as our prebuilt units. If this model does not meet your needs, please contact us at 1-800-369-6671 or to discuss your specific requirements.

Specifications / Additional Information

MGS-3X480.60A-150K-3X208.60A-12X120 Power Distribution System Ratings
Line In: 50’ 350 Type W Cable Max Primary OCP: 400A @ 480V
Primary Voltage: 480VAC 3PH Max Secondary OCP: 400A @ 240V
Primary Panel: 480V 3PH 400A MCB N3R UL 1640 Portable Power-Distribution Equipment
Primary Breakers: [480V], (3) 60A 3P, (1) 200A 3P NEMA 3R Indoor or Outdoor Use
Primary Receptacles: [480V] (3) 60A 460R7W Made in the USA
Primary Protection: Circuit Breakers, Weatherproof Covers
Transformer: 150KVA 480V to 208Y/120V 3PH N3R
Secondary Voltage: 208Y/120VAC 3PH  
Secondary Panel: 208Y/120V 3PH 400A MCB N3R  
Secondary Breakers: [250V] (3) 60A 3P, [125V] (12) 20A 1P 
Secondary Receptacles: [250V] (3) 60A 460R9W, [125V] (12) 20A GFCI Duplex  
Secondary Protection: GFCI, Weatherproof Covers Special Orders- Requirements
Form Factor: Square tube frame w/ 1/4" thick, 3" tubing, skid pockets, top pick eye & 8” locking casters Contact us for special requirements
Frame Materials: Powder coated steel frame Toll Free: 1-800-369-6671
Dimensions: 48”-L X 44”-W X 72”-H Intl: 1-214-616-6180
Weight: 1,027 lbs E-mail:
*All grounding shall comply with state and local codes and meet the minimum requirements of the National Electronic Code section 250*
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Part #:MGS-3X480.60A-150K-3X208.60A-12X120 (105711)
In Stock:Yes



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Product  Part #PriceOption 1Option 2Option 3Qty
150 KVA Power Distribution - 480V to 208Y/120V 3PH - (3) 460R7W (3) 460R9W (12) GFCI Duplex MGS-3X480.60A-150K-3X208.60A-12X120$27,489.43N/AN/AN/A 

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