Overview
The Cooper Bussmann FNM-12 is a supplemental time-delay midget fuse rated at 12 amperes and 250 volts AC. Part of the Fusetron FNM series, this FNM-12 fuse uses dual-element technology to provide protective time-delay characteristics, allowing temporary inrush currents to pass without unnecessary nuisance trips while protecting against true overload conditions. Each box contains 10 units for convenient replacement and inventory management in maintenance operations.
Key Features
- Time-Delay Design: Dual-element time delays offer extra delay for temporary overloads to pass without opening
- Compact Midget Size: 13/32 in diameter by 1-1/2 in length body for tight-fit applications
- High Interrupting Rating: 10 kiloampere interrupting rating at 125VAC
- UL Listed: UL Listed, Standard 248-14
- Ferrule Terminals: Secure clip-style connection for standard fuse holders
- Box Quantity: 10 fuses per box for economical stocking
Technical Specifications
The FNM-12 meets industry standards for supplemental circuit protection in electrical cabinets, control panels, and industrial equipment.
Typical Applications
- Electronic circuit boards and control modules
- Industrial automation and PLC systems
- HVAC and refrigeration equipment
- Power supply and transformer protection
- Motor control circuits (low-load applications)
- Lighting and heating circuit protection
Compatibility & Replacements
Compatible With
- Standard midget fuse holders and clips
- Industrial control panels and electrical cabinets
- Equipment rated for 250V AC circuits
- Legacy and modern electrical systems using supplemental fuse protection
Replaces / Drop-In Replacement For
- Other Bussmann FNM-12 equivalents
- Generic 12A, 250V time-delay midget fuses of identical dimensions (13/32″ × 1-1/2″)
- Verify compatibility with your system integrator before ordering to ensure proper fit and electrical characteristics
Works With
- Class CC/5AG supplemental fuse classes
- Ferrule and clip-terminal fuse holder designs
- Standard electrical distribution and protection equipment
