Online Demos and Tools

Relays and Controls

NGR Monitor Set-Point Assistant

NGR Monitor Set-Point Assistant

This assistant provides set-point recommendations for Littelfuse Startco SE-325 , SE-330 , SE-330AU , and SE-330HV Neutral-Grounding-Resistor Monitors.

Virtual FPU-32 (VFPU)

FPU-32 Demo

FPU-32 Feeder Protection Unit that allows the user to scroll through the menus.

Virtual MPS (VMPS)

MPS Demo

VMPS is a "virtual" MPS-OPI Operator Interface that allows the user to scroll through the menus.


Virtual MPU-32 (VMPU)

MPU-32 Demo

VMPU is a "virtual" MPU-32 Motor Protection Unit that allows the user to scroll through the menus.


MPU-32 Tutorial

This tutorial covers basic topics in using the MPU-32 Motor Protection Unit, including how to enter set points, how to view metered information, and how to handle trips and alarms. Step-by-step instructions guide you through every button press as you accomplish the task at hand.


Symmetrical Component Calculator

Symmetrical Component Calculator

This calculator finds the unbalance of three-phase input quantities using the positive- and negative-sequence component method. It can be used in conjunction with relay test equipment to verify the unbalance readings for the Littelfuse Startco FPU-32 , MPU-32 , and MPS .


Download Symmetrical Component Calculator v1.0
Find Littelfuse 777 3-Phase Current & Voltage Monitors here.

777 3-Phase Current & Voltage Monitor Features

The 777 demo will guide you through the interface, communication, mounting methods and various other features.

Find Littelfuse 777 3-Phase Current & Voltage Monitors here.

777 3-Phase Current & Voltage Monitor Features

This demo walks you through how the 777 can help when common faults occur.