Overview
The Bussmann NON-3 is a non-current-limiting, one-time cartridge fuse rated for 250V AC / 125V DC operation. With a 3A ampere rating and Class H designation, this fuse features a 50 kA interrupt rating and is designed for general-purpose overcurrent protection in circuits with relatively low available short-circuit currents.
Key Features
- Fast-acting (normal blow) response with Class K5 and H classification
- Protects lighting, heating, and other circuits not subject to temporary surges
- Non-indicating, non-rejection design with ferrule terminal for cartridge-style holder mounting
- Single-element melamine body construction
- CE, UL, and CSA approvals
- Non-renewable protection (one-time use per fuse)
Technical Specifications
- Ampere Rating: 3A
- Voltage Rating: 250V AC / 125V DC
- Class: H (Class K5 for 0–60A range)
- Type: One-time, non-current-limiting, fast-acting
- Interrupt Rating: 50 kA
- Body Material: Melamine cartridge
- Body Dimensions: 9/16 in dia × 2 in length
- Terminal Type: Ferrule
- Certifications: UL Listed, CSA Certified, CE Marked
- Series: NON (Bussmann)
Typical Applications
Bussmann NON basic protection general purpose one-time fuses protect lighting, heating and other circuits not subject to temporary surges and where available short-circuit currents are relatively low. These fuses are suitable for branch circuits, control transformers, and equipment where fast response to overcurrent is required but motor or load transient protection is not a concern.
Compatibility & Replacements
Compatible With
- Class H cartridge fuse blocks and holders (9/16 in diameter, 2 in length)
- Standard branch circuit protection systems operating at 250V AC or 125V DC
- Electrical enclosures and distribution equipment rated for Class H fuses
Replaces / Drop-In Replacement For
- Bussmann NON-3 (all variants: NON3, NON 3 Amp, NON-3, NON 3A, NON3A, NON-3A)
- Cooper Bussmann NON-3
- Eaton NON-3
Works With
- Standard Class H fuse blocks and cartridge holders
- Branch circuit protection systems and control circuits
- Equipment compliant with NEC Article 240, UL 248-6, and CSA C22.2 No. 248
