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.

Product Registration Form

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Motor Protection Videos

MPU-32 and MPS Motor Protection Relays.

Advanced motor protection for small, medium and large motors.

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MP8000 Bluetooth Overload Relay

See how the Littelfuse Bluetooth Overload Relay uses your smartphone to protect motors and pumps while saving you time and keeping you safe from arc flash.

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Meet the Littelfuse Motor Protection Team

Meet the Team Behind the Motor Saver and Pump Saver Protection Relays.

Step inside our facility and meet the team behind our pace-setting delivery, responsive service, and quality products.

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Interested in learning more about our Motor Protection Relays? A variety of resources are available to download by clicking the links below.