Bussmann Time Delay Midget Fuse FNQ Series 5A 500V Non-Indicating Ferrule End

Bussmann Time Delay Midget Fuse FNQ Series 5A 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 midget time-delay fuse features dual-element construction 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 Design - Provides time-delay characteristics to handle motor starting currents and transformer in-rush without nuisance tripping
• 5 Ampere Rating - Precise overcurrent protection for control circuits and small motor applications
• 500V Voltage Rating - Suitable for industrial control systems and commercial electrical installations
• 10 kAIC Interrupt Rating - Reliable fault current clearing capability for safe electrical system protection

Safety & Standards Compliance

• CE Marked Certification - Meets European safety standards for international electrical installations
• Non-Indicating Design - Professional-grade construction without visual indication for standard applications
• Nickel-Plated Bronze Endcaps - Corrosion-resistant construction ensures reliable electrical connections and long service life

Technical Specifications

5 ampere rating, 500V voltage rating, 10 kAIC interrupt rating at 500VAC, ferrule end x ferrule end connection, time-delay characteristics, midget fuse size (1.5" x 0.41" x 0.41"), 0.175 lb weight, nickel-plated bronze endcap construction, non-indicating design, CE marked compliance.

Installation & Setup

1. Verify power is OFF and use proper lockout/tagout procedures before fuse installation
2. Inspect fuse holder for proper size compatibility and clean connections
3. Insert fuse ensuring proper ferrule end contact with fuse holder terminals
4. Verify secure mechanical connection and proper fuse seating
5. Test circuit operation after energizing to confirm proper protection coordination
6. Document fuse installation and rating for maintenance records

Professional Applications

Ideal for:

• Motor Control Circuits - Protection for motor starters, contactors, and control transformers with high in-rush currents
• Transformer Protection - Primary and secondary protection for control transformers and small power transformers
• Control Panel Applications - Circuit protection in industrial control panels and automation systems
• Lighting Control Circuits - Protection for lighting contactors and ballast circuits
• HVAC Systems - Motor protection for fans, pumps, and compressor control circuits
• Industrial Machinery - Control circuit protection for manufacturing equipment and process control
• Commercial Buildings - Electrical protection for building automation and control systems
• Power Distribution - Branch circuit protection in low-voltage distribution panels

Time-Delay Technology Advantage

Bussmann's dual-element time-delay design provides superior coordination with downstream protective devices while allowing temporary overloads during motor starting and transformer energizing. The time-delay characteristics prevent nuisance tripping while maintaining fast fault clearing for short circuits, ensuring optimal electrical system protection and reliability.

Why Choose Bussmann Quality?

Bussmann's commitment to electrical safety excellence includes CE marking compliance, precision-engineered time-delay characteristics, and reliable overcurrent protection for professional installations. The nickel-plated bronze construction and midget form factor provide long-lasting performance in demanding industrial and commercial electrical environments.