LB-Series AC Load Banks

Model # AC-LB-Series

Eagle Eye's AC Load Banks are the smallest AC load banks in the industry that offer unmatched capacities with rugged durability. Each load bank is fully self-contained and designed for portable AC load testing that can easily withstand harsh testing environments. Our resistor design and assembly make it possible to achieve smaller portable load banks than anyone in the industry. AC load bank testing can provide predictive failure analysis of backup power systems in any industry. Optional features allow for complete load bank customization for any application. AC Load Banks are commonly used to test generator sets, UPS units, aircraft power inverters and other AC power sources.

The AC Load Bank series offers several standard models for continuous load. These models are designed with the most common applications in mind. All load banks come standard with durable finishing, ten-foot cables in a rugged construction frame and housed in a hard-carrying case with handle.

Every AC Load Bank is lightweight, durable, and has quick connect for test cables. Straightforward individual fan switches, load step switches, and master load switches make the unit user-friendly. Safety features are equipped on every AC Load Bank for fast-acting, branch circuit fuse protection and sensors to prevent overheating and current overload. AC Load banks are used for indoor-use only. There is no regular maintenance required with any Eagle Eye AC Load Bank. For high power portable load bank testing of generators, UPS, and other critical AC power sources, see our LB-480-500kW AC Load Bank.

  • Specifications
  • FAQs
  • Benefits
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Technical Specs

Model Ratings: LB-60-30
  • 120VAC Single Phase: .33, .66, .66, 1.66, 3.33, 3.33 KW
  • 240VAC Single Phase: .66, 1.33, 1.33, 3.33, 6.66, 6.66 KW
  • 208VAC Three Phase: 1, 2, 2, 5, 10, 10 KW
  • 480VAC Three Phase: 12.5, 12.5, 25, 25, 25 KW
  • 440VAC Three Phase: 10.5, 10.5, 21, 21, 21 KW
  • 400VAC Three Phase: 8.75, 8.75, 17.5, 17.5, 17.5 KW
  • 380VAC Three Phase: 7.75, 7.75, 15.5, 15.5, 15.5 KW
  • 208VAC Three Phase: 10, 10, 20, 20, 20 KW
  • 240VAC Single Phase: 6.5, 6.5, 13, 13, 13 KW
  • 120VAC Single Phase: 1.6, 1.6, 3.2, 3.2, 3.2 KW
  • 200VAC Three Phase: 9, 18, 27, 36, 42, 54, 63, 72 KW
  • 200VAC Three Phase: 10, 19, 28, 37, 46, 55, 64, 73, 82, 91, 100, 109 KW
Safety Features:
  • Fast acting branch circuit fuse protection on all 3 phases of all load steps

  • Fused 120 V control circuit

  • Air pressure switch to prevent load from being applied if loss of cooling air is detected

  • Over-temperature sensor automatically removes load if an over-temperature condition is detected

  • Blower Motor circuit is protected by current overload protection

  • Operator warning and caution statements are located on appropriate access panels and doors

Weight:LB-60-30: 35 lbs
LB-60-100: 60 lbs
LB-400-72: 35 lbs
LB-400-100D: 45 lbs


What are some common applications areas for this product?
Common applications include but are not limited to:

  • Generators
  • UPS
  • Utilities
  • Government/Defense
  • Automatic Transfer Switches (ATS)
  • Rectifiers/Inverters
  • Switchgear and Distribution Equipment
  • Aviation
  • Engineering
  • Electronics
  • Industrial Manufacturing
  • Battery Service Groups
  • Universities/College

What is the importance of load testing?
Load testing is a vital part of testing your overall system health because it is the only true way to ensure that your equipment is performing as it should.

What is the AC series used for?
AC Load Banks are specifically designed to test generators and UPS systems.

What input voltages are the unit’s compatible with?
Standard units are compatible with 480, 208, and 240 VAC. If you have any questions or would like to know if it would work for your application, please contact us.

Are the units’ portable?
The AC load banks are portable and most models come with a supplied carrying case.


  • Durable & portable units
  • Branch circuit fuse protection on all 3 phases of load steps
  • Air pressure switch to prevent load from being applied if loss of cooling air is detected
  • Blower Motor Circuit is protected by current overload protection
  • Over-temperature sensor automatically removes load if an over-temperature condition is detected
  • Easy-to-use switches and controls for fan, load steps and master load
  • Low-noise & high velocity cooling system
  • Rugged construction metal frame
  • Lifting handles
  • Stainless steel exterior fasteners

More Info

Standard AC Load Bank Offering Includes:

  • LB-60-30
  • LB-60-100
  • LB-400-72
  • LB-400-100D

If these units do not fit your needs or application, or for any load bank testing inquiries, contact us and we can work together to create a custom AC Load Bank solution.

Resistive load testing simulates real-life loads and provides verification that your power system is capable of operation at its rated capacity. Load testing also provides timely identification of any problems so that maintenance can be performed. Avoid any downtime or disruption of services, verify the true capacity of your batteries, and reduce the risk of system failure with load testing. If you are looking to test DC power sources, see Eagle Eye's line of DC Load Banks that include real-time battery cell monitoring and analysis during discharge.

Eagle Eye offers a variety of durable and easy to use power solutions, from hydrogen gas ventilation systems, to battery chargers and testers.
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  • Model #

    Single and 3 Phase Portable AC Load Banks 60 Hz and 400 Hz

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Eagle Eye Power Solutions Load Testing

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Companies We Serve
  • US Air Force: Aircraft Load BankUS Army: Generator Testing
  • Tyco Thermal ControlsHindle Power: Generator Testing
  • RaytheonCummins: Power Generation Equipment - Battery Equipment