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Ampgard 7.2 kV medium-voltage motor control

Ampgard medium-voltage starters are the ultimate in motor control, performance, reliability and protection.  Eaton offers a complete line of full voltage and reduced voltage starter types. This broad selection of medium-voltage control supports a wide range of industrial applications including pulp and paper, water and wastewater, oil & gas and HVAC.

Ampgard 7.2 kV medium-voltage motor control
Voltage Class
7.2 kV
up to 8000 Hp
Main Bus Rating
up to 3000 A

Core features

  • Designed and tested to meet UL® 347
  • Available with arc-resistant enclosures that comply with IEEE Standard C37.20.7-2007
  • Outfitted with Eaton’s Type SL vacuum contactors - the industry’s highest interrupting ratings
  • Proven durability with a long-life isolation switch rated for 10,000 mechanical operations
  • Top-mounted main bus for convenient installation and maintenance
  • Starter types include full voltage non-reversing (FVNR), reduced voltage reactor (RVR), reduced voltage autotransformer (RVAT) and reduced voltage solid state soft starter (RVSS)
  • Available with Eaton EMR series of motor protection relays for comprehensive and safe motor monitoring and starting control   
  • Completely front accessible
  • Two-high 400 A and one-high 800 A starter configurations

Ampgard, the name motor applications rely on

Eaton has been an industry leader for more than 50 years, providing UL 347 certified medium-voltage control. When it comes to controlling and protecting medium-voltage motors, the Ampgard family is the premier high-performance choice.

Money saving double-bus design

When close-coupling Ampgard starters with medium-voltage drives for synchronous transfer applications the double bus eliminates external cables and associated accessories required to connect motor-select and bypass starters. Material and labour savings can be upwards of $25,000 for a four-motor system.

Remote operator for enhanced safety

The Ampgard Remote Operator (ARO) for the starter isolation switch that, when mounted on the front of the starter, allows personnel to safely open and close the switch from outside the arc flash boundary.

Integrated control gear streamlines multi-configuration line-ups

Compact and economical solution combining Eaton’s Ampgard main breaker and motor starters with the SC9000 medium-voltage drive across a common bus in a single high quality, integrated assembly. Entire assembly is available as arc-resistant.