Eaton LPS-RK-300SP-TP fuse - RK1, time-delay

Feature: The LPS-RK-300SP-TP is a true low-peak fuse with time-delay and current-limiting characteristics. This combination delivers smoother operation for loads with inrush and short-duration overloads, reducing nuisance trips that stall production lines. In practice, it protects motors, drives, and feeders in power distribution panels while maintaining coordination with upstream protective devices. Business impact: The 300 A, 600 V / 300 Vdc ratings equip the fuse to handle dual AC/DC environments without swapping components. Installation benefits include tin-plated end contacts that resist corrosion and a standard packaging format that streamlines stocking. The electrically isolated end cap design minimizes cross-wiring risks during field wiring and service. Application: Suitable for industrial control panels, motor feeders, and process line protection in factories and facilities with stringent uptime requirements. Compatibility: Works with Bussmann series families and Eaton's broader protection portfolio, simplifying spare parts procurement. The fuse's non-indicating form reduces visual clutter in dense control panels. Reliability and performance: With 100 kAIC at 300 Vdc and 300 kAIC at 600 VAC interrupt ratings, the LPS-RK-300SP-TP clears faults quickly while limiting arc energy. The RK1 class designation provides consistent protection characteristics across similar loads, aiding selective coordination. Common objections—such as concerns about indicators or field replacement—are addressed by the non-indicating feature and standard form-factor. Maintenance and data access: The Eaton datasheet (Specification Sheet) and Bussmann catalogs offer detailed electrical and mechanical data, replacement guidance, and installation notes. Real-world teams benefit from long service life, reduced downtime, and easier procurement with the LPS-RK family.