Bussmann LPS-RK Series Low-Peak Class RK1 Time-Delay Fuse

Bussmann LPS-RK Series Low-Peak Class RK1 Time-Delay Fuse

The Bussmann LPS-RK Series is a genuine Eaton-built line of Low-Peak Class RK1 dual-element time-delay fuses, available in amp ratings from 1A to 500A to protect commercial and industrial circuits of nearly any size. Every fuse in the series is rated 600V (300 Vdc), is current-limiting, and carries a 300 kAIC interrupt rating at 600 Vac and 100 kAIC at 300 Vdc, delivering dependable performance under high fault-current conditions. The dual-element, time-delay design opens in 10 seconds at 500% of rated current, so the fuse rides through temporary inrush and motor-starting surges without nuisance opening while still protecting downstream conductors during a sustained overload. Built to the Class RK1 construction standard with ferrule end x ferrule end, non-indicating bodies, this series is sized for use in Class RK1 or RK5 fuse blocks and disconnect switches wherever dual-element time-delay protection is required.

Key Features

• Amp Rating Range: Available from 1A to 500A (1A, 2A, 6A, 80A, 125A, 150A, 250A, 350A, 400A, 500A) so you can match protection precisely to branch, motor, and equipment circuits.
• Voltage Rating: 600V (300 Vdc) for use across both AC and DC electrical applications.
• Class RK1, Dual-Element Construction: Time-delay design rides through momentary inrush and starting surges while still protecting against sustained overloads.
• Time-Delay Speed: Opens in 10 seconds at 500% of rated current, reducing nuisance trips during normal motor and equipment starting.
• Current-Limiting, High Interrupt Rating: 300 kAIC at 600 Vac and 100 kAIC at 300 Vdc for dependable protection in high fault-current environments.
• Ferrule End x Ferrule End Termination: Non-indicating design for straightforward compatibility with standard Class RK1 fuse blocks and holders.
• Class RK1 Fuse Block Compatibility: Sized for use in Class RK1 or RK5 fuse blocks and disconnect switches.

Certifications & Compliance

• CE Marked

Technical Specifications

• Fuse Type: Time delay

Typical Applications

• Branch Circuit Overcurrent Protection
• Motor and Equipment Circuit Protection
• Panelboard and Load Center Fusing
• Industrial and OEM Equipment Protection
• Control Circuit and Instrumentation Protection
• Renovation and New Construction Electrical Systems

Why Bussmann?

Bussmann by Eaton is a recognized name in circuit protection, and the LPS-RK Series Low-Peak fuse line reflects that reputation with genuine Class RK1 dual-element construction, current-limiting performance, and a 300 kAIC interrupt rating at 600 Vac across its full 1A to 500A range. Backed by CE Marked compliance, this series delivers the reliable, code-compliant protection professional electricians and facility managers depend on for demanding circuit protection applications.