Bussmann Time Delay Fuse FNQ-R Series 3A 600V Class CC Current Limiting Ferrule End

Bussmann Time Delay Fuse FNQ-R Series 3A 600V Class CC Current Limiting Ferrule End

Professional-Grade Current Limiting Circuit Protection

The Bussmann Time Delay Fuse FNQ-R Series delivers superior electrical protection and circuit safety for control circuits and small transformer applications. This Class CC current limiting fuse features rejection-style design with 12-second time delay at 200% rating, 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

• 200 kAIC Interrupt Rating - Provides exceptional fault current interruption capability for high-energy electrical systems
• Class CC Current Limiting Design - Reduces let-through energy and protects downstream equipment from damaging fault currents
• Time Delay Response (12 sec at 200%) - Allows temporary overloads while providing fast protection against short circuits
• Rejection Style Construction - Prevents installation of incorrect fuse types, ensuring proper circuit protection

Safety & Standards Compliance

• UL Listed Construction - Meets rigorous safety standards for professional electrical installations
• NEC Compliant Design - Ensures code compliance for commercial and industrial electrical systems
• CE Marked Certification - Provides international safety compliance for global electrical applications

Technical Specifications

3 ampere rating at 600 volts AC, Class CC current limiting fuse with 200 kAIC interrupt rating, ferrule end connections, 12-second time delay at 200% rating, melamine tube construction, compact dimensions of 1.5" length x 0.41" diameter, lightweight 0.15 lb design for easy installation.

Installation & Setup

1. Verify power is OFF and use proper lockout/tagout procedures before fuse installation
2. Confirm fuse holder compatibility with Class CC rejection-style design
3. Check amperage and voltage ratings match circuit requirements (3A, 600V)
4. Insert fuse with ferrule ends fully seated in fuse holder contacts
5. Verify secure connection and proper fuse holder closure
6. Test circuit operation and verify proper overcurrent protection function

Professional Applications

Ideal for:

• Control Circuit Protection - Motor starters, contactors, and industrial control panels requiring precise overcurrent protection
• Small Transformer Circuits - Control transformers and low-power distribution transformers in commercial buildings
• Industrial Control Systems - PLC circuits, instrumentation, and process control equipment protection
• Branch Circuit Protection - Lighting circuits, receptacle circuits, and small motor branch circuits
• Line Protection Applications - Primary protection for low-amperage electrical distribution systems
• Commercial Building Systems - HVAC controls, fire alarm circuits, and building automation systems
• Panel Board Protection - Individual circuit protection in electrical distribution panels
• Equipment Protection - Electronic equipment and sensitive electrical devices requiring current limiting

Current Limiting Technology Advantage

Bussmann's advanced current limiting technology reduces peak let-through current and energy during fault conditions, protecting downstream equipment from damage. The Class CC design provides superior arc suppression and selective coordination with upstream protective devices, ensuring reliable electrical system operation and enhanced safety.

Why Choose Bussmann Quality?

Bussmann's commitment to UL listing, NEC compliance, and reliable overcurrent protection makes this fuse the preferred choice for professional electrical installations. The rejection-style design prevents misapplication, while the melamine tube construction ensures long-term reliability and consistent performance in demanding electrical environments.