Bussmann Time Delay Fuse FRS-R Series 35A 600VAC/250VDC Class RK5 Dual Element Ferrule End

Bussmann Time Delay Fuse FRS-R Series 35A 600VAC/250VDC Class RK5 Dual Element Ferrule End

Professional-Grade Dual Element Time Delay Protection

The Bussmann Time Delay Fuse FRS-R Series delivers superior electrical protection and circuit safety for motor circuits and inductive loads. This Class RK5 time delay fuse features dual element construction with 10-second delay at 500% rated current, 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

Time Delay Protection

• Dual Element Construction - Provides time delay characteristics for motor starting currents while offering fast clearing on short circuits
• 10 Second Delay at 500% - Allows temporary overloads while protecting against sustained overcurrent conditions
• 200 kAIC Interrupt Rating at 600VAC - High fault current clearing capability for demanding industrial applications
• Class RK5 Current Limiting - Reduces let-through energy and protects downstream equipment from damaging fault currents

Safety & Standards Compliance

• CE Marked Certification - Meets European safety and performance standards for international installations
• Non-Indicating Design - Professional-grade construction without visual indication for standard electrical panel applications
• Ferrule End Connection - Secure connection method ensuring reliable electrical contact and easy installation

Technical Specifications

35 ampere rating, 600VAC/250VDC voltage rating, 200 kAIC interrupt rating at 600VAC, Class RK5 current limiting, dual element time delay construction, ferrule end x ferrule end connection, 10 second response time at 500% rated current, dimensions 2.34" H x 2.34" W x 11.63" L, weight 2.25 lbs, non-indicating design.

Installation & Setup

1. Verify power is OFF and use proper lockout/tagout procedures before installation
2. Check fuse holder compatibility with Class RK5 ferrule end design
3. Insert fuse ensuring proper ferrule end contact with fuse clips
4. Verify secure mounting and proper electrical connections
5. Test installation with appropriate electrical testing equipment
6. Document installation per NEC requirements and facility maintenance records

Professional Applications

Ideal for:

• Motor Protection Circuits - Time delay characteristics accommodate motor starting currents while protecting against overloads
• Transformer Primary Protection - Handles inrush currents while providing reliable overcurrent protection
• Industrial Control Panels - Protects control circuits and motor starters in manufacturing facilities
• HVAC Equipment Protection - Ideal for air handling units, chillers, and commercial HVAC systems
• Pump and Compressor Circuits - Time delay allows for starting surges while protecting against sustained overloads
• Commercial Building Systems - Elevator motors, escalators, and building automation equipment
• Power Distribution Panels - Branch circuit protection in industrial and commercial electrical systems
• Manufacturing Equipment - Machine tool protection and industrial process equipment

Dual Element Time Delay Advantage

Bussmann dual element technology combines time delay characteristics for temporary overloads with fast clearing capability for short circuits. The thermal element provides time delay for motor starting and temporary overloads, while the magnetic element ensures rapid clearing of dangerous fault currents, delivering selective coordination and comprehensive circuit protection.

Why Choose Bussmann Quality?

Bussmann commitment to CE marking compliance, Class RK5 current limiting technology, and reliable dual element construction ensures professional-grade overcurrent protection for critical electrical installations. Trusted by electrical contractors worldwide for consistent performance, safety, and long-term reliability in demanding industrial and commercial applications.