Overview
The Bussmann FNQ-15 is a time-delay supplemental fuse designed for overcurrent protection in industrial control circuits and small equipment. This lot includes 10 new-in-box units featuring dual-element, slow-blow technology that accommodates harmless inrush currents while protecting against sustained faults. The fiber-tube cartridge body meets UL and CSA standards for reliable circuit protection.
Key Features
- 15-ampere current rating with 500V maximum voltage for standard AC systems
- Time-delay / slow-blow characteristics tolerates inrush without nuisance trips
- Dual-element design combines fast thermal and electrical overload response
- 10 kiloampere (10kA) interrupting rating at 500V for reliable fault protection
- UL Listed, CSA Certified per standards 248-14 and C22.2 No. 248.14
- Cartridge form factor with standard ferrule or holder-mount installation
Technical Specifications
| Amperage Rating | 15 A |
| Voltage Rating | 500 V AC |
| Fuse Type | Time-Delay (Slow-Blow), Dual-Element |
| Interrupting Rating | 10 kA @ 500 V AC |
| Body Material | Fiber Tube |
| Dimensions | 13/32″ diameter × 1-1/2″ length |
| Mounting Style | Holder Mount / Ferrule Clip Termination |
| Certifications | UL Listed (Std. 248-14), CSA Certified, CE Marked, RoHS Compliant |
| Series | Bussmann FNQ Supplemental Fuses |
| Quantity | Lot of 10 |
| Condition | New in Box |
Typical Applications
- Small equipment control circuits and transformers
- Industrial automation and machinery branch protection
- HVAC control panels and motor starter circuits
- Test equipment and laboratory power supplies
- General-purpose supplemental fuse protection up to 30A range
Compatibility & Replacements
Compatible With
- Standard FNQ fuse holders and clips rated for 13/32″ × 1-1/2″ cartridges
- Holder-mount fuse blocks and panel-mounted terminations
- Control circuits rated 500V AC or lower
- Industrial 120V, 240V, and 480V three-phase systems (with appropriate transformer isolation)
Replaces / Drop-In Replacement For
- Other 15A 500V time-delay supplemental fuses in FNQ series
- Generic dual-element, slow-blow 15-ampere cartridge fuses with similar dimensions
- Verify compatibility with your specific fuse block or holder before installation
Works With
- Bussmann/Eaton fuse holders and terminal blocks
- Industrial panel assemblies and power distribution equipment
- Any holder designed for standard 13/32″ × 1-1/2″ cartridge fuses
- UL and CSA–approved circuit protection systems
