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

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