Bussmann
Bussmann GMQ-6-1/4 Time-Delay Glass Fuse 6.25A 300V AC 10kA
Time-delay glass fuse rated 6.25 A at 300 V AC with a 10 kA interrupt rating
- Time-delay characteristic prevents nuisance trips from inrush currents
- 25 A rating protects circuits at 300 V AC
- 10 kA interrupt rating handles high fault currents safely
- Glass body allows visual inspection of element status
- UL 248-14, CSA and CE certifications confirm compliance
What this fuse protects
The Bussmann GMQ-6-1/4 is a time-delay glass fuse rated for 6.25 amps at 300 volts AC. It suits circuits that experience brief inrush currents and need a fuse that tolerates momentary surges without opening. Buyers who want a fast-acting fuse for sensitive electronics should choose a different type.
The rating that decides fit
The interrupt rating is 10 kiloamps at 300 volts AC. This single figure tells you whether the fuse can safely clear a fault on your supply. If your available fault current exceeds that level, this fuse is not adequate. The cylindrical body measures 2-1/4 inches long by 5/8 inch diameter and fits compatible HLQ series fuse blocks.
Installing and common mistakes
The fuse inserts into a matching HLQ fuse block; no tools are required beyond the block's own mounting hardware. A frequent error is forcing the fuse into a block with a different rejection feature, which can damage the glass body. Verify the cap diameter matches 5/8 inch before installation. Always replace with the same series and rating.
Highlights
- Time-delay characteristic prevents nuisance trips from inrush currents
- 25 A rating protects circuits at 300 V AC
- 10 kA interrupt rating handles high fault currents safely
- Glass body allows visual inspection of element status
- UL 248-14, CSA and CE certifications confirm compliance
Specifications
| Brand | EATON BUSSMANN |
|---|
Questions about this item
How does the 10 kA interrupt rating protect my circuit in a real installation?
It guarantees the fuse can clear a short-circuit current of up to 10 000 amps at 300 V AC without rupturing.
What does the 300 V AC rating cap for this GMQ fuse?
It limits use to circuits where the nominal voltage does not exceed 300 V AC.
What fuse block or holder does the 2-1/4 in by 5/8 in cylindrical body need?
It fits the HLQ series fuse blocks that accept this diameter and length.
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