Advanced Motor Protection

Littelfuse has an advanced line of motor protection relays to provide protection for small, medium, and large motors in critical applications. These products are built for rugged applications, include circuit boards with conformal coating, and are backed by a 10-year warranty.

MPS Series

The MPS Motor Protection System monitors voltage, current, and temperature to provide a comprehensive package of 22 protective functions. The MPS includes integrated protection, motor control, metering, and data-logging functions, and the modular design allows it to be used in a wide variety of new and retrofit applications. It integrates with most starters and customized start sequences, and frequency monitoring adjusts the relay's sampling rate for accurate protection with VFDs.

MPU-32 Series

TThe MPU-32 Motor Protection Unit is used to provide current and temperature-based protection, metering, and data logging for three-phase low-voltage medium-horsepower induction motors. This relay is ideal for retrofitting and upgrading obsolete or aging motor protection using existing CTs. See the PMA Family of Panel Mount Adapter Kits to replace common obsolete relays.

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