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

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

The Bussmann LPS-RK Series Low-Peak fuse is a Class RK1, non-indicating, time-delay, current-limiting fuse engineered for large distribution switchboards, power panelboards, and motor control centers. Rated 600V / 300 Vdc with an interrupting rating of 100 kAIC (Vdc) and up to 300 kAIC at 600 V, this tin-plated fuse is available across 22 amp ratings from 5.6A to 400A, letting electricians match protection precisely to circuit and equipment needs. The time-delay design rides out motor-starting inrush current while the current-limiting construction restricts let-through energy during a fault, helping protect downstream equipment, conductors, and connected loads from damage. As a non-indicating fuse, it is intended for installations where visual open-fuse indication is not required, keeping the fuse holder or block simple and compact.

Key Features

• Amp Rating Range: Available in 22 ratings from 5.6A to 400A, sized to match branch-circuit and equipment protection requirements.
• Class RK1 Current-Limiting: Current-limiting design restricts let-through energy during short-circuit conditions for tighter equipment protection.
• Time-Delay, Non-Indicating Operation: Time-delay characteristic rides out motor-starting and transformer inrush without nuisance opening.
• Voltage Rating: 600V / 300 Vdc for use across large distribution switchboards, power panelboards, and motor control centers.
• Interrupting Rating: 100 kAIC (Vdc) and up to 300 kAIC at 600 V for high fault-current withstand.
• Tin-Plated Construction: Tin-plated fuse elements support reliable long-term contact and corrosion resistance.
• Non-Indicating Design: Non-indicating construction suits standard fuse blocks and holders where blown-fuse indication is not needed.

Technical Specifications

• Class: Class RK1
• Voltage Rating: 600 Vac, 300 Vdc
• Product Type: Time Delay Fuses

Typical Applications

• Large Distribution Switchboards
• Power Panelboards
• Motor Control Centers
• Commercial and Industrial Electrical Systems
• Short-Circuit and Overcurrent Protection

Why Bussmann?

Bussmann by Eaton is a recognized name in circuit protection, and the LPS-RK Series Low-Peak fuse reflects that reputation with Class RK1 current-limiting, time-delay performance built for demanding industrial and commercial power systems. Tin-plated construction and a 600V / 300 Vdc rating with up to 300 kAIC interrupting capacity combine reliable long-term performance with high fault-current withstand, giving electrical professionals a dependable choice for switchboard, panelboard, and motor control center protection across the full 5.6A-400A range.