Overview
The Bussmann GLR-5 is a supplemental-class, fast-acting inline fuse designed for protection of fluorescent lighting ballasts, appliances, and low-voltage electrical circuits. This compact glass fuse features a 5A rating at 300VAC with a 10kA interrupt capacity and is supplied as a non-indicating, non-rejection type with wire terminals and cylindrical glass body. The fuse and knob are an integral one-piece unit with no replacement knobs available; units can be panel mounted with a separate steel clip.
Key Features
- Fast-acting response characteristics suitable for branch-circuit protection
- UL and CSA approvals for recognized safety standards
- Integral one-piece fuse and knob design — no replaceable caps required
- Compact inline format ideal for space-constrained installations
- Supplied in convenient box of 5 units
Technical Specifications
The GLR-5 features a cylindrical body measuring 0.72 inches diameter by 2.25 inches length, making it suitable for tight mounting spaces. Fast-acting response allows it to clear faults rapidly, protecting downstream equipment from overcurrent damage. The supplemental fuse class designation indicates it is designed for use in conjunction with branch-circuit protection in specific applications.
Typical Applications
- Fluorescent lighting fixtures and ballast protection
- Small appliances and control circuits
- Low-voltage branch-circuit protection in industrial and commercial equipment
- Lighting ballast inline protection (non-rejecting, non-indicating design)
Compatibility & Replacements
Compatible With
- HLR series inline fuse holders (Bussmann standard mount)
- Standard panel-mount fuse clips and holders accepting 5A inline fuses
- Fluorescent fixture ballast assemblies rated 5A 300VAC
- Branch circuits rated 5A or less at 300VAC
Replaces / Drop-In Replacement For
- Bussmann GLR-5 (original equipment)
- Littelfuse LGR 5 (similar fast-acting characteristics)
- Older Cooper Bussmann GLR-5 fuses
- Verify exact interchangeability with your system before installation
Works With
- Standard 5A 300VAC branch-circuit wiring and terminals
- Inline ballast protection circuits
- UL-listed and CSA-certified electrical systems
- Panel-mount and undersurface installations
