Bussmann Time Delay Fuse FRS-R Series 10A 600VAC/300VDC Class RK5 Dual Element Ferrule End

Bussmann Time Delay Fuse FRS-R Series 10A 600VAC/300VDC 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 response to short circuits
• 10 Second Delay at 500% - Allows temporary overloads while protecting against sustained overcurrent conditions
• Current Limiting Technology - Reduces let-through energy and limits fault current to protect downstream equipment
• 200 kAIC Interrupt Rating at 600V - Handles high fault currents safely in industrial and commercial electrical systems

Safety & Standards Compliance

• Class RK5 Design - Meets NEC requirements for motor protection and general purpose applications
• CE Marked Certification - Ensures compliance with international electrical safety standards
• Non-Indicating Design - Provides reliable protection without visual indication for standard applications

Technical Specifications

10 ampere rating, 600VAC/300VDC voltage rating, 200 kAIC interrupt rating at 600V, 20 kAIC at 300VDC, Class RK5 classification, ferrule end connections, dual element construction, 10 second time delay at 500% rated current, dimensions 1.11" H x 1.11" W x 7.88" L, weight 0.4 lb, non-indicating design.

Installation & Setup

1. Turn off power and verify zero energy state using proper lockout/tagout procedures before installation
2. Inspect fuse holder and connections for proper condition and correct amperage rating compatibility
3. Insert fuse with ferrule ends fully seated in fuse holder clips ensuring secure mechanical connection
4. Verify proper fuse class and amperage rating matches circuit protection requirements
5. Test installation with appropriate electrical testing equipment before energizing circuit
6. Document installation details including fuse specifications and installation date for maintenance records

Professional Applications

Ideal for:

• Motor Protection Circuits - HVAC motors, pump motors, conveyor systems, and industrial machinery with starting surge requirements
• Transformer Primary Protection - Control transformers, lighting transformers, and power distribution transformers
• Control Panel Applications - Motor control centers, electrical panels, and industrial control systems
• Lighting Circuit Protection - Commercial lighting systems, ballast protection, and LED driver circuits
• Industrial Machinery - Manufacturing equipment, process control systems, and automated production lines
• Commercial Buildings - HVAC systems, elevator controls, and building automation equipment
• Power Distribution Systems - Electrical panels, switchgear, and distribution boards requiring time delay characteristics
• Inductive Load Protection - Solenoids, contactors, and electromagnetic devices with inrush current characteristics

Dual Element Time Delay Advantage

Bussmann dual element technology provides superior coordination between time delay and current limiting functions. The thermal element handles temporary overloads and motor starting currents, while the current limiting element provides fast fault clearing for short circuits. This combination ensures selective coordination with upstream protective devices while maintaining reliable motor protection and electrical system safety.

Why Choose Bussmann Quality?

Bussmann demonstrates unwavering commitment to electrical safety through rigorous testing, CE marking compliance, and proven dual element time delay technology. Every FRS-R series fuse delivers reliable overcurrent protection with consistent 10 second time delay characteristics, current limiting performance, and the electrical safety standards that professional contractors and facility managers trust for critical motor protection and industrial applications.