Littelfuse Offers Bluetooth Smartphone App for Overload Relay Protection

Littelfuse is busy making fault detection easier and faster, while improving safety for contractors and electricians. <br><br>The company’s new MP8000 Bluetooth-Enabled Overload Relay can communicate directly with your smart-phone via Bluetooth®. Littelfuse

James R. Dukart

Littelfuse is busy making fault detection easier and faster, while improving safety for contractors and electricians.

The company’s new MP8000 Bluetooth-Enabled Overload Relay can communicate directly with your smart-phone via Bluetooth®.

The universal relay offers real time operating information and allows you to monitor fault detection on multiple motors and pumps within a 30-foot range, any or all of which can be tested while behind closed cabinet doors, thus mitigating the risk of electric shock or arc-flash.

The MP8000 protects any motor drawing 0.5-1,000 full-load Amps, though external CTs are required for above 100 Amps. The system is designed for single or 3-phase systems with operating voltages of 90-690 VAC; the use of external potential transformers can extend the upper voltage range above 690 VAC.

The app allows for the pairing of multiple devices organized by order of proximity to the phone or tablet being used for testing, while an online tutorial helps walk new users through the authentication and pairing of motors and pumps to be monitored.

Using standard on-screen buttons and keyboard data input, users can set both basic configuration settings such as voltage and current levels as well as more advanced settings like underload to trip levels or ground fault to trip delay.

Among the many hazards the MP8000 can monitor and protect against are drywell, jams, undervoltage and overheating.

Common applications include conveyor systems, HVAC equipment, saws and grinders, fan motors, and almost any pumping application.


Photo courtesy of Littelfuse