Unbeatable Motor Protection

Motors are the largest single cause of industrial and commercial fires. This is why it's vital to protect your motors from overloads, jams, phase loss or unbalance, heat, heavy start-ups or excessive operational cycles. From basic to advanced, from standard to smart, we have the level of protection right for you.

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Smart and Universal Motor Protection

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MP8000

The revolutionary MP8000 Bluetooth® Enabled Overload Relay communicates directly with your smart phone via Bluetooth®. No need to open the control panel. Monitor and control unlimited relays through the Littelfuse App from a safe distance via your smartphone or tablet.

 

Advanced Motor Protection

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777-P2

The MotorSaver®, 777-P2 Current and Voltage Monitor combines voltage/phase protection into an overload relay with on-board display for easy programming.


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MPU-32

Ideal for larger, complex motors, the MPU-32 Motor Protection Unit provides current and temperature protection, data logging, and metering.


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MPS

One of the most advanced and customizable dynamic thermal models on the market, the MPS Motor Protection System monitors voltage, current, and temperature.


Basic and Standard Motor Protection


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455 and Informer MS

The 455 Voltage Monitor Relay, used with the Informer MS, can monitor the load side, log events, and view conditions on a display in real time.

 

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PGR-6100

The PGR-6100 Ground-Fault and Insulation Relay combines the feature of ground fault protection and insulation monitoring all-in-one.

 

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201 A-AU, 460

Providing a basic level of protection, these devices monitor the voltage going into the motor.

 
 

Current-Limiting Fuses

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UL级保险丝

The CCMR, FLSR, and JTD Series provide general protection for a wide range of circuits.

 
 
 

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指示型保险丝

The FLSR ID, JTD ID, and LLSRK ID Series provides visual blown fuse indication at a glance

 
 
 
 

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Fuses Blocks

Used with indicating fuses, space saving indicating fuse blocks provide easy open fuse identification.

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 更多信息

MP8000蓝牙过载继电器

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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MPU-32 and MPS Motor Protection Relays.

Advanced motor protection for small, medium and large motors.

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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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资源

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Motor Protection Guide

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What is Your Relay Telling You? 白皮书

Download Motor Protection Checklist

电机保护检查清单