Bussmann Time Delay Fuse LPS-RK Series 100A 600VAC/300VDC Class RK1 Current Limiting Blade End

Bussmann Time Delay Fuse LPS-RK Series 100A 600VAC/300VDC Class RK1 Current Limiting Blade End

Professional-Grade Low-Peak Current Limiting Electrical Protection

The Bussmann Time Delay Fuse LPS-RK Series 100A delivers superior electrical protection and circuit safety for motor circuits, transformer protection, and industrial power distribution. This Class RK1 time delay fuse features dual element current-limiting technology designed for electrical contractors, industrial facilities, and commercial installations, providing the reliable overcurrent protection and industry-leading safety that electrical professionals demand.

Professional Features & Benefits

Current Limiting Protection

• Dual Element Design - Provides time delay for motor starting while offering fast fault clearing for maximum circuit protection
• 100 kAIC Interrupt Rating - Safely clears high fault currents up to 100,000 amperes at 300VDC for reliable electrical system protection
• Low-Peak Technology - Minimizes let-through energy and reduces system stress during fault conditions
• Current Limiting Action - Limits fault current to protect downstream equipment and reduce arc flash hazards

Safety & Standards Compliance

• Class RK1 Performance - Meets stringent UL standards for current limitation and selective coordination
• CE Marked Certification - Complies with international electrical safety standards for global installations
• Non-Indicating Design - Professional blade end construction for secure panel mounting and reliable electrical connections

Technical Specifications

100 ampere rating at 600VAC/300VDC, Class RK1 current limiting fuse with 100 kAIC interrupt rating at 300VDC. Dual element time delay construction with blade end connections. Dimensions: 7.88" length x 1.11" width x 1.11" height, weighing 4 pounds. Features electrically isolated end cap for enhanced safety and reliable electrical isolation.

Installation & Setup

1. Verify power is completely de-energized and follow proper lockout/tagout procedures before installation
2. Inspect fuse holder and blade connections for proper alignment and secure mounting
3. Insert fuse with blade ends fully seated in fuse holder contacts ensuring proper electrical connection
4. Verify fuse amperage rating matches circuit protection requirements and NEC specifications
5. Test installation with appropriate electrical testing equipment before energizing circuit
6. Document fuse installation and maintain proper electrical safety records per NEC requirements

Professional Applications

Ideal for:

• Motor Protection Circuits - Time delay allows motor starting currents while providing fast fault protection
• Transformer Primary Protection - Handles inrush currents while protecting against overloads and short circuits
• Industrial Control Panels - Reliable overcurrent protection for manufacturing and process control systems
• Power Distribution Systems - Main and feeder circuit protection in commercial and industrial facilities
• Lighting Circuit Protection - Handles ballast inrush while protecting against electrical faults
• HVAC Equipment Protection - Motor and compressor circuit protection with time delay characteristics
• Electrical Panel Applications - Main breaker panels and load centers requiring current limiting protection
• Commercial Building Systems - Elevator motors, escalators, and building automation equipment protection

Low-Peak Current Limiting Advantage

Bussmann LPS-RK series technology provides superior current limitation compared to standard fuses, reducing let-through energy by up to 50% during fault conditions. The dual element design offers precise time delay coordination while maintaining fast fault clearing capability, ensuring optimal protection for motors, transformers, and sensitive electrical equipment in demanding industrial applications.

Why Choose Bussmann Quality?

Bussmann commitment to electrical safety includes rigorous UL testing, NEC compliance verification, and reliable overcurrent protection performance. Our Class RK1 current limiting fuses provide selective coordination capability, arc flash reduction, and proven fault clearing technology trusted by electrical contractors and facility managers for critical electrical installations and industrial power systems.