Electronic overload

Electronic overload protects motors by directly measuring motor current, enabling it to model a motor’s thermal condition. The overload device is designed to identify excessive current or ‘loss of phase’ more accurately than traditional bi-metallic overloads.
By Plant Engineering Staff August 1, 2007

The C396 electronic overload protects motors by directly measuring motor current, enabling it to model a motor’s thermal condition. The overload device is designed to identify excessive current or‘loss of phase’ more accurately than traditional bi-metallic overloads.

The electronic overload can be used in applications that require motor overload, phase unbalance and phase failure protection. It also has low energy consumption, minimizing temperature rise issues inside control cabinets.

The overload device reduces inventory stocking requirements and the associated carrying costs with its wide 5:1 Full Load Ampere range. The wide range results in the need for less than half as many catalog numbers as a traditional bi-metallic alternative while covering the same current range. This also allows for greater installation flexibility for dual voltage machines.

The electronic overload is available as a stand-alone device with a current range from 0.1-150 A, which can be increased to 1,500 A with an external current transformer kit and selectable trip class 5, 10, 20 or 30. Eaton Corp.
www.eaton.com