--- title: Littelfuse Commercial and Industrial Motor Protection description: Protect your commercial and industrial motors from overloads, jams, phase loss or unbalance, heat, heavy start-ups or excessive operational cycles. Find the Protection that meets your needs. image: https://info.littelfuse.com/hubfs/Corporate/Logo/WebsiteLogoWhite.jpg --- [![Littelfuse_Logo.png](https://info.littelfuse.com/hs-fs/hubfs/Corporate/Logo/WebsiteLogoWhite.jpg?width=191&height=62&name=WebsiteLogoWhite.jpg "Littelfuse_Logo.png")](http://www.littelfuse.com) [Spanish](https://info.littelfuse.com/proteccion-para-motores-industrial?hsLang=en-us)     **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. ![MP-Family-New-3](https://info.littelfuse.com/hs-fs/hubfs/MP-Family-New-3.png?width=456&height=259&name=MP-Family-New-3.png)  [VIDEO](https://info.littelfuse.com/littelfuse-motor-protection#video) [RESOURCES](https://info.littelfuse.com/littelfuse-motor-protection#resources) [TROUBLESHOOTING GUIDE](https://info.littelfuse.com/hubfs/Electrical/Industrial/Landing_Pages/Images/TroubleShootingGuide-MP-LP.png?hsLang=en-us) [FEATURE COMPARISON](https://info.littelfuse.com/hubfs/Electrical/Industrial/Landing_Pages/Images/Comparison-MP-LP.png?hsLang=en-us) --- ## *Smart and Universal Motor Protection* ![MP8000-MP-LP-2](https://info.littelfuse.com/hs-fs/hubfs/Electrical/Industrial/Landing_Pages/Images/mp8000/MP8000-MP-LP-2.png?width=202&name=MP8000-MP-LP-2.png)   **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. [![](https://info.littelfuse.com/hubfs/Electrical/Protection-Relays/PDF-Icon-16x16.jpg) Datasheet](https://www.littelfuse.com/media?resourcetype=datasheets&itemid=dcb689c5-8b3f-40d5-9b4a-b645439e8963&filename=mp8000-datasheet) [![block.png](https://info.littelfuse.com/hs-fs/hubfs/Electrical/Industrial/Landing_Pages/Images/block.png?width=16&name=block.png "block.png") Learn More](https://info.littelfuse.com/mp8000-bluetooth-overload-relay?hsLang=en-us)   ## *Advanced Motor Protection* ![777-P2-MP-LP.png](https://info.littelfuse.com/hs-fs/hubfs/Electrical/Industrial/Landing_Pages/Images/777-P2-MP-LP.png?width=202&height=166&name=777-P2-MP-LP.png) **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. [![](https://info.littelfuse.com/hubfs/Electrical/Protection-Relays/PDF-Icon-16x16.jpg) Datasheet](https://www.littelfuse.com/media?resourcetype=datasheets&itemid=b7a87c12-0ee7-4163-a69b-942e89414e71&filename=777-datasheet) [![](https://info.littelfuse.com/hubfs/Electrical/Industrial/Landing_Pages/Images/block.png) Learn More](http://www.littelfuse.com/products/protection-relays-and-controls/protection-relays/motor-and-pump-protection/777.aspx) --- ![MPU-32-MP-LP.png](https://info.littelfuse.com/hs-fs/hubfs/Electrical/Industrial/Landing_Pages/Images/MPU-32-MP-LP.png?width=202&height=166&name=MPU-32-MP-LP.png) **MPU-32** Ideal for larger, complex motors, the MPU-32 Motor Protection Unit provides current and temperature protection, data logging, and metering. [![](https://info.littelfuse.com/hubfs/Electrical/Protection-Relays/PDF-Icon-16x16.jpg) Datasheet](https://www.littelfuse.com/media?resourcetype=datasheets&itemid=290abbea-b288-4bd0-9c42-f6dd4521d142&filename=mpu-32-datasheet) [Learn More](http://www.littelfuse.com/products/protection-relays-and-controls/protection-relays/motor-and-pump-protection/mpu-32.aspx) --- ![MPS-MP-LP.png](https://info.littelfuse.com/hs-fs/hubfs/Electrical/Industrial/Landing_Pages/Images/MPS-MP-LP.png?width=202&height=166&name=MPS-MP-LP.png) **MPS** One of the most advanced and customizable dynamic thermal models on the market, the MPS Motor Protection System monitors voltage, current, and temperature. [![](https://info.littelfuse.com/hubfs/Electrical/Protection-Relays/PDF-Icon-16x16.jpg) Datasheet](https://www.littelfuse.com/media?resourcetype=datasheets&itemid=3790a10b-ac49-45eb-a151-3da13d5b963d&filename=mps-datasheet) [![](https://info.littelfuse.com/hubfs/Electrical/Industrial/Landing_Pages/Images/block.png) Learn More](http://www.littelfuse.com/products/protection-relays-and-controls/protection-relays/motor-and-pump-protection/mps.aspx) ## *Basic and Standard Motor Protection* ![455_InformerMS_MP_LP](https://info.littelfuse.com/hs-fs/hubfs/455_InformerMS_MP_LP.png?width=202&height=166&name=455_InformerMS_MP_LP.png) **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. [![](https://info.littelfuse.com/hubfs/Electrical/Protection-Relays/PDF-Icon-16x16.jpg) 455 Datasheet](https://www.littelfuse.com/media?resourcetype=datasheets&itemid=12e716f6-8e75-439f-b8d5-fdf9cef03dfa&filename=455-datasheet) [![](https://info.littelfuse.com/hubfs/Electrical/Industrial/Landing_Pages/Images/block.png) Learn More](http://www.littelfuse.com/products/protection-relays-and-controls/protection-relays/voltage-monitoring-relays/455.aspx)   [![](https://info.littelfuse.com/hubfs/Electrical/Protection-Relays/PDF-Icon-16x16.jpg) Informer MS Datasheet](https://www.littelfuse.com/media?resourcetype=datasheets&itemid=6fc2d42d-7df4-4f12-a0ca-387359cc1b15&filename=informer-ms-datasheet) [![](https://info.littelfuse.com/hubfs/Electrical/Industrial/Landing_Pages/Images/block.png) Learn More](http://www.littelfuse.com/products/protection-relays-and-controls/accessories/remote-indication-and-monitoring/informer-ms.aspx) --- ![6100-MP-LP.png](https://info.littelfuse.com/hs-fs/hubfs/Electrical/Industrial/Landing_Pages/Images/6100-MP-LP.png?width=202&height=166&name=6100-MP-LP.png) **PGR-6100** The PGR-6100 Ground-Fault and Insulation Relay combines the feature of ground fault protection and insulation monitoring all-in-one. [![](https://info.littelfuse.com/hubfs/Electrical/Protection-Relays/PDF-Icon-16x16.jpg) Datasheet](https://www.littelfuse.com/media?resourcetype=datasheets&itemid=25f6b73b-6356-41ba-af19-ee102ae740ca&filename=pgr-6100-datasheet) [![](https://info.littelfuse.com/hubfs/Electrical/Industrial/Landing_Pages/Images/block.png) Learn More](http://www.littelfuse.com/products/protection-relays-and-controls/protection-relays/motor-and-pump-protection/pgr-6100.aspx)   --- ![201-460-MP-LP.png](https://info.littelfuse.com/hs-fs/hubfs/Electrical/Industrial/Landing_Pages/Images/201-460-MP-LP.png?width=202&name=201-460-MP-LP.png "201-460-MP-LP.png")   **201 A-AU, 460** Providing a basic level of protection, these devices monitor the voltage going into the motor. [![](https://info.littelfuse.com/hubfs/Electrical/Protection-Relays/PDF-Icon-16x16.jpg) 201A-AU Datasheet](https://www.littelfuse.com/media?resourcetype=datasheets&itemid=3711f996-f145-4251-a44a-d064f55068de&filename=201a-au-datasheet) [![](https://info.littelfuse.com/hubfs/Electrical/Industrial/Landing_Pages/Images/block.png) Learn More](http://www.littelfuse.com/products/protection-relays-and-controls/protection-relays/voltage-monitoring-relays/201a-au.aspx)   [![](https://info.littelfuse.com/hubfs/Electrical/Protection-Relays/PDF-Icon-16x16.jpg) 460 Datasheet](https://www.littelfuse.com/media?resourcetype=datasheets&itemid=f93d7b3f-f373-49f8-ad47-6c62455909a9&filename=460-datasheet) [![](https://info.littelfuse.com/hubfs/Electrical/Industrial/Landing_Pages/Images/block.png) Learn More](http://www.littelfuse.com/products/protection-relays-and-controls/protection-relays/voltage-monitoring-relays/460-voltage-relays.aspx)   ## *Current-Limiting Fuses* ![UL-CLASS-Fuses-MP-LP.png](https://info.littelfuse.com/hs-fs/hubfs/Electrical/Industrial/Landing_Pages/Images/UL-CLASS-Fuses-MP-LP.png?width=202&name=UL-CLASS-Fuses-MP-LP.png "UL-CLASS-Fuses-MP-LP.png") **UL Class Fuses** The CCMR, FLSR, and JTD Series provide general protection for a wide range of circuits. [![](https://info.littelfuse.com/hubfs/Electrical/Protection-Relays/PDF-Icon-16x16.jpg) CCMR Datasheet](https://www.littelfuse.com/media?resourcetype=datasheets&itemid=4443e5f6-97ee-4206-9abe-9e155371a03e&filename=ccmr-datasheet) [![](https://info.littelfuse.com/hubfs/Electrical/Industrial/Landing_Pages/Images/block.png) Learn More](http://www.littelfuse.com/products/fuses/industrial-power-fuses/class-cc-fuses/ccmr.aspx)   [![](https://info.littelfuse.com/hubfs/Electrical/Protection-Relays/PDF-Icon-16x16.jpg) FLSR Datasheet](https://www.littelfuse.com/media?resourcetype=datasheets&itemid=7be90a9b-b8b9-43b2-88aa-9c5d300dc28a&filename=littelfuse-flsr-fuse-datasheet) [![](https://info.littelfuse.com/hubfs/Electrical/Industrial/Landing_Pages/Images/block.png) Learn More](http://www.littelfuse.com/products/fuses/industrial-power-fuses/class-rk5-fuses/flsr.aspx)   [![](https://info.littelfuse.com/hubfs/Electrical/Protection-Relays/PDF-Icon-16x16.jpg) LLSRK Datasheet](https://www.littelfuse.com/media?resourcetype=datasheets&itemid=5024d378-f9ac-4fa6-aa1c-726a5350b88d&filename=llnrk-llsrk-datasheet) [![](https://info.littelfuse.com/hubfs/Electrical/Industrial/Landing_Pages/Images/block.png) Learn More](http://www.littelfuse.com/products/fuses/industrial-power-fuses/class-rk1-fuses/llsrk.aspx)   --- ![Indicating-MP-LP.png](https://info.littelfuse.com/hs-fs/hubfs/Electrical/Industrial/Landing_Pages/Images/Indicating-MP-LP.png?width=202&name=Indicating-MP-LP.png "Indicating-MP-LP.png") **Indicating Fuses** The FLSR ID, JTD ID, and LLSRK ID Series provides visual blown fuse indication at a glance [![](https://info.littelfuse.com/hubfs/Electrical/Protection-Relays/PDF-Icon-16x16.jpg) FLSR\_ID Datasheet](https://www.littelfuse.com/media?resourcetype=datasheets&itemid=7be90a9b-b8b9-43b2-88aa-9c5d300dc28a&filename=littelfuse-flsr-fuse-datasheet) [![](https://info.littelfuse.com/hubfs/Electrical/Industrial/Landing_Pages/Images/block.png) Learn More](http://www.littelfuse.com/products/fuses/industrial-power-fuses/class-rk5-fuses/flsr.aspx)   [![](https://info.littelfuse.com/hubfs/Electrical/Protection-Relays/PDF-Icon-16x16.jpg) JTD\_ID Datasheet](https://www.littelfuse.com/media?resourcetype=datasheets&itemid=be681419-5e39-4762-9762-c3a8b2478b32&filename=jtd-datasheet) [![](https://info.littelfuse.com/hubfs/Electrical/Industrial/Landing_Pages/Images/block.png) Learn More](http://www.littelfuse.com/products/fuses/industrial-power-fuses/class-j-fuses/jtd.aspx)   [![](https://info.littelfuse.com/hubfs/Electrical/Protection-Relays/PDF-Icon-16x16.jpg) LLSRK\_ID Datasheet](https://www.littelfuse.com/media?resourcetype=datasheets&itemid=5024d378-f9ac-4fa6-aa1c-726a5350b88d&filename=llnrk-llsrk-datasheet) [![](https://info.littelfuse.com/hubfs/Electrical/Industrial/Landing_Pages/Images/block.png) Learn More](http://www.littelfuse.com/products/fuses/industrial-power-fuses/class-rk1-fuses/llsrk.aspx)     --- ![Fuse-Blocks-MP-LP.png](https://info.littelfuse.com/hs-fs/hubfs/Electrical/Industrial/Landing_Pages/Images/Fuse-Blocks-MP-LP.png?width=202&height=166&name=Fuse-Blocks-MP-LP.png) **Fuses Blocks** Used with indicating fuses, space saving indicating fuse blocks provide easy open fuse identification. [![](https://info.littelfuse.com/hubfs/Electrical/Industrial/Landing_Pages/Images/block.png) Learn More](http://www.littelfuse.com/products/fuse-blocks-fuseholders-and-fuse-accessories/powrgard-fuse-blocks.aspx) **To be contacted with more information,** **please fill out the form below.** --- ##  Learn More [![Watch the MP8000 Motor Protection Relay Video](https://info.littelfuse.com/hubfs/Electrical/Industrial/Landing_Pages/Images/Littelfuse_MP8000_Video.png)](http://players.brightcove.net/1799386164001/SyQ7u56E_default/index.html?videoId=5293358503001) [**MP8000 Bluetooth Overload Relay**](http://players.brightcove.net/1799386164001/SyQ7u56E_default/index.html?videoId=5293358503001) 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. [***Watch the Video***](http://players.brightcove.net/1799386164001/SyQ7u56E_default/index.html?videoId=5293358503001) [![Watch Littelfuse Motor Protection Relay Videos](https://info.littelfuse.com/hubfs/Electrical/Industrial/Landing_Pages/Images/Littelfuse_MPS_MPU_32_Video.png)](https://players.brightcove.net/1799386164001/default_default/index.html?videoId=2416140340001) [**MPU-32 and MPS Motor Protection Relays.**](https://players.brightcove.net/1799386164001/default_default/index.html?videoId=2416140340001) Advanced motor protection for small, medium and large motors. ***[Watch the Video](https://players.brightcove.net/1799386164001/default_default/index.html?videoId=2416140340001)*** [![Meet the Littelfuse Motor Protection Team](https://info.littelfuse.com/hubfs/Electrical/Industrial/Landing_Pages/Images/Littelfuse_Motor_Protection_Video.png)](https://players.brightcove.net/1799386164001/default_default/index.html?videoId=4367580478001) [**Meet the Team Behind the Motor Saver and Pump Saver Protection Relays.**](https://players.brightcove.net/1799386164001/default_default/index.html?videoId=4367580478001) Step inside our facility and meet the team behind our pace-setting delivery, responsive service, and quality products. ***[Watch the Video](https://players.brightcove.net/1799386164001/default_default/index.html?videoId=4367580478001)*** ## Resources [![New call-to-action](https://no-cache.hubspot.com/cta/default/455238/db9816c1-4387-4f43-9f0c-e6fdaa5796f5.png)](https://cta-redirect.hubspot.com/cta/redirect/455238/db9816c1-4387-4f43-9f0c-e6fdaa5796f5) **[Motor Protection Guide](http://www.littelfuse.com/~/media/protection-relays/brochures/littelfuse-relays-motor-protection-brochure.pdf)** [![New call-to-action](https://no-cache.hubspot.com/cta/default/455238/cfe3f4b8-a827-4c98-9139-1eb75218e80a.png)](https://cta-redirect.hubspot.com/cta/redirect/455238/cfe3f4b8-a827-4c98-9139-1eb75218e80a) [**What is Your Relay Telling You?** White Paper](https://info.littelfuse.com/whats-your-relay-telling-you-white-paper?hsLang=en-us) [![Download Motor Protection Checklist](https://no-cache.hubspot.com/cta/default/455238/925c0321-2134-4752-8c4e-c7eca960a547.png)](https://cta-redirect.hubspot.com/cta/redirect/455238/925c0321-2134-4752-8c4e-c7eca960a547) [**Motor Protection Checklist**](http://www.littelfuse.com/~/media/protection-relays/brochures/littelfuse_industrial_motor_protection_checklist.pdf) [Data Privacy & Communications](https://www.littelfuse.com/data-privacy-and-communications)  |  [Website Terms of Use](https://www.littelfuse.com/legal/website-terms-of-use)  |  [Product Disclaimer](https://www.littelfuse.com/legal/product-disclaimer) Littelfuse, Inc. 6133 North River Road, Suite 500, Rosemont, IL 60018 USA, 773-628-1000 Copyright © 2026 Littelfuse, Inc.