Littelfuse Startco是业界公认的采矿业及其他工业领域用接地故障保护产品的全球领导品牌， Startco系列保护继电器产品包括弧光保护继电器,接地故障继电器、中性点接地电阻监控器、电机及馈线保护继电器和接地检测监视器等。

Startco Engineering ULC., is a recognized leader in ground-fault protection products and custom power distribution centers that are used in mining and other heavy industries. The company's products protect equipment from damage and improve safety for workers, caused by ground-fault and other electrical incidents. Littelfuse acquired Startco Engineering Ltd., of Saskatoon, Canada, in 2008, changed the name to Startco Engineering ULC, in 2012, and is currently doing business as Littelfuse Startco.

The Littelfuse Startco line of protection relays includes ground-fault relays, neutral-grounding-resistor monitors, motor and feeder protection relays and ground-check monitors.