Overview
The Bussmann LPS-RK-8SP is a Class RK1 low-peak, dual-element, time-delay fuse designed for industrial circuit protection. Manufactured by Eaton Bussmann, this 8A 600V fuse offers current-limiting protection with an interrupting rating of 300 kA at 600 Vac and 100 kA at 300 Vdc, meeting all requirements of UL Standard 248-12 for Class RK1 fuses. The Low-Peak design allows it to handle high-inrush currents without nuisance blowing, making it ideal for motor circuits, transformers, and other inductive loads.
Key Features
- Class RK1 rejection-type fuse with current-limiting protection
- Dual-element, time-delay design for transient surge tolerance
- 300 kA interrupting rating at 600 Vac; 100 kA at 300 Vdc
- Non-indicating cartridge design in standard 5″ length × 13/16″ diameter
- UL and CSA listed; meets IEC 60127-2
- Compact, efficient protection for motor starters, control transformers, and machinery circuits
Technical Specifications
- Amperage: 8A
- Voltage Rating: 600 VAC / 300 VDC
- Fuse Class: RK1 (current-limiting)
- Type: Dual-Element, Time-Delay (Slow-Blow)
- Interrupting Rating: 300 kA @ 600 Vac, 100 kA @ 300 Vdc
- Body Material: Melamine cartridge
- Dimensions: 5″ L × 13/16″ Dia
- Certifications: UL 248-12, CSA C22.2 No. 248.12
- Series: Bussmann LPS-RK (Low-Peak 600V)
Typical Applications
- Motor circuit protection in industrial machinery
- Control transformer circuits in PLC and automation systems
- HVAC and refrigeration compressor circuits
- Industrial switchgear and distribution panels
- Equipment requiring Class RK1 rejection-type protection
- Circuits requiring time-delay protection to tolerate inrush currents
Compatibility & Replacements
Compatible With
- Standard Class RK1 fuse blocks and holders (1BR, R600 series)
- Industrial fuse blocks rated for 600V AC cartridge fuses
- Motor starter and disconnect switch cabinets
- Control transformer and soft-starter circuits
- Any equipment designed for Class RK1 cartridge fuses
Replaces / Drop-In Replacement For
- Littelfuse LLSRK-8 (equivalent Class RK1 8A 600V)
- Mersen A6D-8 (equivalent Class RK1 fuse)
- Other 8A 600V Class RK1 low-peak fuses with identical physical dimensions
Works With
- Class RK1 rejection fuse blocks and carriers
- Standard 5″ × 13/16″ cylindrical fuse holders
- Industrial power distribution and panel systems
- Motor control centers and soft starters
