Overview
Bussmann FNM-1 time-delay supplemental fuses are Class CC rated midget cartridge fuses designed for circuits requiring slow-blow protection. These fuses protect equipment and wiring from sustained overcurrent conditions while allowing brief inrush currents typical of motor and transformer loads.
Key Features
- 1-ampere rating with 35A interrupting capacity at 250V
- Dual-element time-delay design for high inrush current tolerance
- Green color coding for easy voltage identification (250V maximum)
- Melamine tube construction with nickel-plated endcaps
- Ferrule-to-ferrule terminal configuration for standard fuse holders
- UL Listed (Std. 248-14), CSA Certified, RoHS compliant
Technical Specifications
- Amperage Rating: 1A
- Voltage Rating: 250V AC
- Interrupting Rating: 35A at 250V AC, 10kA at 125V AC
- Fuse Class: Class CC / Supplemental
- Speed Type: Time Delay (Dual Element)
- Physical Size: 13/32 in. diameter × 1-1/2 in. length
- Body Material: Melamine tube with nickel-plated endcaps
- Color Code: Green
- Termination Style: Ferrule end × ferrule end
- Per Box: 10 pieces
Typical Applications
- Motor circuits with high inrush currents
- Transformer primary protection
- Circuits with inductive loads up to 250V AC
- General-purpose supplemental circuit protection
- Lighting and meter circuits
Compatibility & Replacements
Compatible With
- Standard FNM fuse holders and clips
- Class CC fuse blocks (BMM series)
- DIN-rail mounted fuse blocks with CCP series switches
- Modular fuse blocks supporting 13/32 in. × 1-1/2 in. cartridges
- 250V AC supplemental protection circuits
Replaces / Drop-In Replacement For
- Older Bussmann FNM-1 inventory
- Cooper Bussmann FNM-1 equivalent models
- Fusetron FNM-1 midget fuses
Works With
- UL 248-14 / CSA Class 1422-01 compliant systems
- 50/60 Hz AC power circuits
- Single-phase and three-phase AC systems up to 250V
- Equipment using standard cylindrical fuse receptacles
