Download PC software to connect and interact with Startco relays over local and network communications.

Upgrade Littelfuse Startco relays in the field with the latest firmware to add new features.

Learn more about using and programming Littelfuse Startco relays with online user interface demos, an interactive tutorial, a symmetrical component calculator, and an NGR-monitor set-point assistant.

Network communications support files for Littelfuse Startco relays with DeviceNet™, Modbus® TCP, Ethernet/IP, and PROFIBUS®; IP Configuration and Hex Converter utilities.