Bussmann
Bussmann GMD-1.25-R Glass Fuse 1.25A 250V AC line protection
A 1.25 A, 250 V AC time-delay glass fuse in a 20 mm × 5 mm cylindrical body with 100 A interrupt rating at 250 V and 10 kA at 125 V
- Time-delay operation handles temporary surges without nuisance blowing
- 100 A interrupt rating at 250 V AC clears faults safely
- 10 kA interrupt rating at 125 V AC for higher-energy circuits
- 20 mm × 5 mm cylindrical glass body fits standard fuse holders
- UL 248-14, CSA 1422-01 and CE marks confirm compliance
What this fuse protects
The Bussmann GMD-1.25-R is a glass time-delay fuse rated at 1.25 A and 250 V AC. It suits low-current line protection in equipment such as generators, control panels or industrial power supplies. The cylindrical 20 mm x 5 mm body fits standard HTB fuse blocks and is sold in packs of five.
The rating that decides fit
The interrupt rating is 100 A at 250 V AC and 10 kA at 125 V AC, so the fuse can safely clear faults on circuits that do not exceed those levels. It carries CE marking, CSA Class 1422-01 certification and UL 248-14 Guide JDYX approval. If your circuit demands a higher interrupt capacity or a different voltage rating, this part will not meet code.
Installing and common mistakes
The fuse simply presses into a compatible HTB block; no tools are required. Because it is a non-rejection type, it will fit blocks that accept other 20 mm x 5 mm fuses, so verify the series marking before insertion. A frequent error is using a fast-acting fuse where the time-delay characteristic is needed, causing nuisance trips on inrush current.
Highlights
- Time-delay operation handles temporary surges without nuisance blowing
- 100 A interrupt rating at 250 V AC clears faults safely
- 10 kA interrupt rating at 125 V AC for higher-energy circuits
- 20 mm × 5 mm cylindrical glass body fits standard fuse holders
- UL 248-14, CSA 1422-01 and CE marks confirm compliance
Specifications
| Brand | EATON BUSSMANN |
|---|
Questions about this item
What does the 100 A interrupt rating at 250 V AC tell me about how this fuse behaves in a real circuit?
It means the fuse can safely interrupt a fault current of up to 100 A at 250 V AC without rupturing.
How does the 10 kA rating at 125 V AC limit what this fuse can protect?
At 125 V AC the fuse is rated to interrupt fault currents up to 10 kA, so it is suitable for higher-energy circuits at that voltage.
Will this 20 mm by 5 mm cylindrical glass fuse fit my existing holder?
The fuse body is 20 mm long and 5 mm in diameter, matching the standard 5×20 mm cartridge size used in many HTB-series fuse blocks.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
