Overview
The Bussmann NON-1 is a non-current-limiting, one-time cartridge fuse designed for general-purpose circuit protection in 250 VAC systems. This Class K5 fuse offers reliable protection for lighting circuits, main panel protection, and branch circuits without large inductive loads. The NON-1 is UL 248-9 listed and meets CSA and CE certifications, making it suitable for industrial, commercial, and residential applications.
Key Features
- Class K5 Rating: 50 kA interrupting rating at 250 VAC, 10 kA at 125 VDC
- One-Time Operation: Opens permanently on overcurrent; no time-delay characteristics
- General-Purpose Design: Protects lighting circuits, appliance feeders, and main panel connections
- Ferrule Terminal: 0.56-inch diameter, 2-inch length cartridge for standard fuse clips
- UL, CSA & CE Certified: Meets applicable electrical safety standards
- Box Quantity: 10 fuses per package for convenient bulk availability
Technical Specifications
- Ampere Rating: 1 A
- Voltage Rating: 250 VAC / 125 VDC
- Fuse Class: K5
- Fuse Type: One-time, non-current-limiting
- Interrupting Rating (AC): 50 kA (symmetrical)
- Interrupting Rating (DC): 10 kA
- Terminal Type: Ferrule
- Diameter: 0.56 inch
- Length: 2.0 inches
- Certifications: UL 248-9, CSA, CE
- Package Contents: 10 fuses per box
Typical Applications
- Lighting circuit protection in commercial and industrial panels
- Main feeder and branch circuit protection (non-motor loads)
- Residential fuse panel backup and replacement
- Control circuit protection in machinery and equipment
- Low-voltage distribution systems up to 250 VAC
Compatibility & Replacements
Compatible With
- Standard ferrule-terminal fuse clips (0.56″ × 2″ size)
- Modular fuse blocks rated for Class K5 cartridges
- Power distribution panels up to 250 VAC
- Industrial control enclosures and equipment
Replaces / Drop-In Replacement For
- Cooper Bussmann NON-1
- Eaton NON-1
- Other UL 248-9 Class K5 1A fuses with identical ferrule dimensions
Works With
- Class K5 fuse blocks and holders
- Standard panel-mount fuse clips
- Industrial electrical distribution systems rated 250 VAC or lower
