Bussmann Time Delay Fuse FRN-R Series 200A 250VAC/125VDC Class RK5 Dual Element Blade End

Bussmann Time Delay Fuse FRN-R Series 200A 250VAC/125VDC Class RK5 Dual Element Blade End

Professional-Grade Motor and Transformer Circuit Protection

The Bussmann Time Delay Fuse FRN-R Series 200A delivers superior electrical protection and circuit safety for motor circuits, transformers, and high-inrush applications. This Class RK5 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

Advanced Time Delay Protection

• Dual Element Design - Provides superior time delay characteristics with 10 second response at 500% rated current for motor starting protection
• 200A Current Rating - Handles high amperage loads with reliable overcurrent protection for industrial applications
• Current Limiting Technology - Reduces let-through energy and limits fault current to protect downstream equipment
• Blade End Connection - Ensures secure electrical connection in fuse blocks and disconnect switches

Safety & Standards Compliance

• Class RK5 Rating - Meets NEC requirements for motor circuit protection with selective coordination capability
• 200 kAIC Interrupt Rating - Safely clears high fault currents at 250VAC for industrial electrical systems
• CE Marked Compliance - Meets international electrical safety standards for global installations

Technical Specifications

Current Rating: 200 amperes, Voltage Rating: 250VAC/125VDC, Interrupt Rating: 200 kAIC at 250VAC, Fuse Class: RK5, Element Type: Dual element time delay, Response Time: 10 seconds at 500% rated current, Connection: Blade end x blade end, Dimensions: 1" H x 1" W x 1" L, Weight: 0.048 lb, Non-indicating design for standard applications

Installation & Setup

1. Verify power is OFF and use proper lockout/tagout procedures before installation
2. Confirm fuse holder is rated for 200A and Class RK5 fuses per NEC requirements
3. Insert fuse with blade ends fully seated in fuse clips ensuring proper electrical contact
4. Verify fuse orientation matches manufacturer markings and electrical polarity requirements
5. Test installation with appropriate electrical testing equipment before energizing circuit
6. Document fuse installation in electrical panel schedule for maintenance records

Professional Applications

Ideal for:

• Motor Protection Circuits - Large motor starters, HVAC equipment, industrial machinery with high starting currents
• Transformer Primary Protection - Distribution transformers, control transformers, and power supply applications
• Industrial Control Panels - MCC buckets, motor control centers, and electrical distribution equipment
• Commercial Building Systems - Elevator motors, escalator drives, and building automation equipment
• Manufacturing Equipment - Production machinery, conveyor systems, and process control applications
• Power Distribution Systems - Electrical panels, switchgear, and load centers requiring time delay protection
• Lighting Circuit Protection - High-intensity discharge lighting and large lighting contactors
• Electrical Panel Applications - Main breaker panels, sub-panels, and electrical distribution boards

Dual Element Time Delay Advantage

Bussmann dual element technology provides superior selective coordination by allowing temporary overloads while quickly clearing dangerous fault conditions. The time delay element handles motor starting currents and inrush conditions, while the current limiting element provides fast fault clearing to protect electrical equipment and ensure system reliability.

Why Choose Bussmann Quality?

Bussmann commitment to electrical safety includes rigorous testing for NEC compliance, reliable overcurrent protection performance, and current limiting technology that protects electrical systems. Every FRN-R series fuse delivers the quality and reliability electrical professionals trust for critical motor protection and industrial applications.