Power Back
Overview
Temporary Power Restoration Device
Auto Transformer restores a missing hot leg (or neutral) in either 120/240V or 120/208V 3-wire services.
15kva and 20kva PowerBacks now shipping in Stainless Steel NEMA4 enclosures with on-board Voltage Indicators for both 120v legs
Why Utility Companies use the PowerBack
- Ultra-compact Power Restoration Device.
- Provides same day temporary power restoration.
- Saves time and money. Now you can quickly restore power and schedule permanent repairs at a later date instead of having to make repairs immediately.
- Designed for both overhead 120/240V and underground 120/240V 3-Wire systems.
- Stainless Steel Wheeled-Cart is Easy to Move. One person can transport the PowerBack to the job site. No crew or special truck is needed to transport the PowerBack.
- Lightweight – Just half the weight of competitor products (see weights below)
- No need to bridge or run shunts for residential customers who have lost one phase or the neutral to their home.
- Improves public safety by avoiding the need to run temporary cables between customers when a phase is lost.
- Increases customer satisfaction with faster service restoration.
- Thermal Protected High Efficiency Toroidal Transformer- Located near the primary windings of the transformer is a 105C thermal protector switch wired directly to the Shunt-Trip solenoid in the Circuit breaker. Should the transformer over-heat due to overload or short-circuit, the circuit breaker will trip and shut the unit down.
How it works
The PowerBack provides a quick, convenient source of 240 volt power up to *20,000 VA from one phase and a good neutral or 120v service from two good phases (restoring neutral).
The PowerBack Restores Power to both homes and businesses.
Models:
PB15K-M 125A Breaker – Supports 150A Service – 115lbs
PB20K-M 160A Breaker – Supports 200A Service – 135lbs
PB30K-M 250A Breaker – Supports 320A Service – 220lbs
PB50K 400A Breaker – Supports 400A Service – 290lbs






PB30K-M is the only auto transformer spec’d to support 320A homes.
30Kva High Efficiency Toroidal Autotransformer
• 10ft service cable (4/2AWG) w/ Heavy Duty 2-part CL320A Metering Adapter for Lever By-Pass Metering sockets
• 250A Circuit Breaker—125A Rating Continuous Load per Hot Leg
• Thermal Protection (105C) protects transformer against excessive overload
• NEMA 4 All-Weather STEEL enclosure w/ lockable door and welded lifting eye
• 13” x 3.5” Foam-Filled Flat Free tires, roller bearing hubs , stainless steel axle
• Quick reference Installation instructions inside of front door
• 3yr Warrantee (1yr Warrantee on Metering Adapter)
SHOWN ON LEFT, COMPARED TO THE 20KVA – WITHOUT CABLE EXTENSION KIT AND STORAGE BIN
SHOWN WITH CABLE EXTENSION KIT AND STORAGE BIN INSTALLED
PB50K PowerBack – Multi Home / Pad Transformer Support 400A Breaker – 3 Flying Lead Connections
Optional Qwick-Lok Disconnect Lead Extensions with Loop Connections in a Flood Seal Boot
• 50Kva High Efficiency Toroidal Autotransformer – 400A Breaker
• 2x 120V Hot Leads = 1AWG x 10ft Long
• 1 Neutral Lead = 3/0AWG x 10ft long
• Optional – 5ft. Long Quick-Lock disconnects w/ 1 hole Flood-Seal Connectors
• Thermal Sensor (105C) protects transformer against excessive overload
• NEMA 4 All-Weather enclosure w/ lockable door system, and welded lifting eye
• 13” x 3.5” Foam-Filled Flat Free tires, roller bearing hubs , stainless steel axle
• Quick reference Installation instructions inside of front door
• 3yr Warrantee
Huntsville Utilities | Alabama |
ENMAX, Calgary Alberta CA | Alberta, CA |
Arizona Public Service | Arizona |
North Little Rock Electric Department | Arkansas |
City of Azusa, CA | California |
Pacific Gas & Electric | California |
SMUD | California |
City of Gunnison CO | Colorado |
San Miguel Power Assn, Inc. | Colorado |
Xcel Energy | Colorado, Minnesota, Wisconsin |
Delaware Electric Coop | Delaware |
Delmarva Power & Light CO | Delaware, Maryland, Virginia |
Florida Power & Light Company | Florida |
Cobbs EMC | Georgia |
Georgia Power | Georgia |
Jackson Electric Membership Corporation | Georgia |
City Of Weiser, Idaho | Idaho |
Ameren | Illinois |
Commonwealth Edison | Illinois |
Anderson Municipal Light Power AMLP | Indiana |
Indianapolis Power & Light | Indiana |
Nipsco | Indiana |
Indiana Michigan Power Company | Indiana,Michigan |
Alliant Energy (Interstate Power & Light) | Iowa |
Mid-American Energy Company | Iowa |
Traer Municipality Power | Iowa |
Jackson Energy | Kentucky |
Choptank Electric | Maryland |
PECO(EXELON) | Maryland |
PEPCO | Maryland |
Eversource Utilities | Mass, Connecticut, New Hampshire |
DTE Energy | Michigan |
City Of North St Paul Min | Minnesota |
Minnesota Power | Minnesota |
Alexandria Power and Light | Minnesota |
Mississippi County Electric Cooperative | Mississippi |
Co-Mo Electric Coop, Inc. | Missouri |
Northwestern Energy LLC | Montana |
Jersey Central Power and Light | New Jersey |
Con Edison | New York |
New York State Electric & Gas Corporation | New York |
PSE&G | New York, New Jersey |
Edgecombe-Martin EMC | North Carolina |
American Electric Power | Ohio, Michigan, Indiana |
Salem Electric | Oregon |
City Of Ashland OR | Oregon |
Consumer Power Inc. | Oregon |
Emerald Peoples Utility District | Oregon |
Portland General Electric | Oregon |
Northwest Rural Electric Cooperative | Pennsylvania |
PPL Electric | Pennsylvania |
Aiken Electric Co-Op | South Carolina |
Blue Ridge Electric Cooperative | South Carolina |
South Carolina Gas & Electric | South Carolina |
Cleveland Utilities | Tennessee |
EPB | Tennessee |
Volunteer Energy Cooperative | Tennessee |
Price City Utilities | Utah |
Community Electric Cooperative | Virginia |
Dominion Virginia Power | Virginia |
Southside Electric Cooperative | Virginia |
Appalachian Power Company | Virginia |
Avista Utilities Corp | Washington |
Franklin County PUD | Washington |
Kattitas PUD | Washington |
Peninsula Light Company WA | Washington |
Puget Sound Energy | Washington |
Tacoma Power Utilities | Washington |
City of Stoughton Utilities | Wisconsin |
Northwestern Wisconsin Electric Company | Wisconsin |