Bussmann Time Delay Midget Fuse FNQ Series 15A 500V Non-Indicating Ferrule End

Bussmann Time Delay Midget Fuse FNQ Series 15A 500V Non-Indicating Ferrule End

Professional-Grade Motor Control and Transformer Circuit Protection

The Bussmann Time Delay Midget Fuse FNQ Series delivers superior electrical protection and circuit safety for motor control transformers and circuits with high in-rush currents. This time-delay midget fuse features advanced 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

Time Delay Protection

• Motor Starting Protection - Allows temporary overloads during motor startup while protecting against sustained overcurrents
• In-Rush Current Tolerance - Handles transformer energization and capacitive switching without nuisance tripping
• Selective Coordination - Works with upstream protective devices to isolate faults at the lowest level
• Current Limiting Technology - Reduces let-through energy and minimizes arc flash hazards

Safety & Standards Compliance

• UL Listed Design - Meets rigorous safety standards for electrical installations
• CE Marked Compliance - Certified for international electrical safety requirements
• NEC Compliant Protection - Ensures code-compliant electrical installations

Technical Specifications

15 ampere rating at 500 volts AC, 10 kAIC interrupt rating at 500 VAC, compact midget dimensions of 1.5" x 0.41" x 0.41", ferrule end connections, non-indicating design, nickel-plated bronze endcaps for corrosion resistance, time-delay response characteristics for motor and transformer applications, 0.175 lb weight for easy handling.

Installation & Setup

1. Turn off power and verify zero energy state using proper lockout/tagout procedures
2. Select appropriate fuse holder rated for 500V and 15A continuous current
3. Insert fuse with ferrule ends fully seated in fuse clips or holders
4. Verify proper contact pressure and alignment for reliable electrical connection
5. Test installation with appropriate voltage and current measurements
6. Document installation per NEC requirements and facility maintenance records

Professional Applications

Ideal for:

• Motor Control Circuits - Primary and secondary protection for motor starters and control transformers
• Transformer Protection - Control and distribution transformer overcurrent protection
• Lighting Circuits - Ballast and LED driver protection in commercial lighting systems
• Control Panels - Industrial automation and process control circuit protection
• HVAC Systems - Fan motor and control circuit protection in commercial buildings
• Power Distribution - Branch circuit protection in electrical panels and switchgear
• Industrial Machinery - Equipment protection in manufacturing and processing facilities
• Commercial Buildings - Electrical system protection in office and retail environments

Time Delay Technology Advantage

Bussmann's time delay technology provides superior discrimination between temporary overloads and dangerous fault conditions. The dual-element design allows harmless in-rush currents while quickly clearing sustained overloads and short circuits, ensuring optimal protection coordination and minimizing unnecessary downtime in critical electrical systems.

Why Choose Bussmann Quality?

Bussmann's commitment to UL listing, CE marking compliance, and reliable overcurrent protection makes this midget fuse the preferred choice for professional electrical installations. With proven current-limiting technology and time-delay characteristics, it delivers the electrical safety and system reliability that contractors and facility managers demand for motor control and transformer applications.