Bussmann
Bussmann GMC-250-R Glass Fuse 250mA 250V AC 5 pack
Pack of five 250 mA 250 V AC glass time-delay fuses with 10 kA interrupt at 125 V AC
- Time-delay protection prevents nuisance trips
- 250 mA rating suits low-current circuits
- 250 V AC rating covers mains applications
- 10 kA interrupt at 125 V AC handles high fault currents
- Pack of five provides ready spares
Glass Fuse for Low-Current Protection
The Bussmann GMC-250-R is a glass-bodied fuse rated at 250 mA and 250 V AC. It suits circuits that need a small, time-delay element to tolerate brief inrush without nuisance opening. The pack contains five cylindrical fuses measuring 20 mm long by 5 mm diameter. Engineers and hobbyists use them in instrumentation, power supplies and control boards where a non-rejection style fits the holder.
Interrupt Ratings Define Safe Application
The fuse carries a 10 kA interrupt rating at 125 V AC and a 35 A rating at the full 250 V AC. Those figures are the practical limits: the device must not be used on circuits where prospective short-circuit current exceeds the applicable value. It complies with UL 248-14 Guide JDYX, CSA Class 1422-01 and CE standards. The GMC series cross-references Littelfuse 239 and Mersen GSC equivalents for sourcing flexibility.
Straightforward Holder Installation
Installation consists of pressing each fuse into a compatible HTB-series fuse block or any 5 mm x 20 mm clip. The glass body lets you verify element status visually after a fault. The common mistake is selecting a fast-acting fuse when the circuit needs the time-delay characteristic, or exceeding the 35 A interrupt limit at 250 V AC. Always confirm the holder matches the non-rejection body style before fitting.
Highlights
- Time-delay protection prevents nuisance trips
- 250 mA rating suits low-current circuits
- 250 V AC rating covers mains applications
- 10 kA interrupt at 125 V AC handles high fault currents
- Pack of five provides ready spares
Specifications
| Brand | EATON BUSSMANN |
|---|
Questions about this item
Should I choose the 250 mA version or a different current rating for my circuit?
Select the 250 mA fuse only if your circuit requires exactly that current rating; a different rating will not protect the equipment correctly.
What does the 10 kA at 125 V AC interrupt rating mean once the fuse is installed?
It means the fuse can safely break a fault current of up to 10 000 amps at 125 V AC without rupturing the glass body.
How does the 35 A at 250 V AC rating limit what this fuse can handle?
At 250 V AC the fuse is only rated to interrupt 35 amps, so it must not be used on circuits where a higher fault current could occur.
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