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Five glass tube fuses with silver end caps

Bussmann

Bussmann GMC-125-R Glass Fuse 125mA 250V AC 10kA 35A 20mm 5mm Pack of 5

SKU CH-QXD8-QRPHK

Pack of five 20 mm glass time-delay fuses rated 125 mA at 250 V AC with 10 kA interrupt at 125 V and 35 A at 250 V

  • Time-delay protection handles temporary surges without nuisance blowing
  • 10 kA interrupt rating at 125 V AC clears high fault currents safely
  • 35 A interrupt rating at 250 V AC suits mains-voltage circuits
  • 20 mm × 5 mm cylindrical glass body fits standard fuse holders
  • Pack of 5 provides ready spares for maintenance or replacement

Glass fuse for low-current circuits

The Bussmann GMC-125-R is a glass-bodied time-delay fuse rated at 125 mA and 250 V AC. It protects sensitive electronics and control circuits from overcurrent damage. The cylindrical 20 mm by 5 mm body fits standard HTB fuse blocks. A pack of five provides spares for maintenance or field replacement.

Interrupt rating at operating voltage

The fuse interrupts 10 kA at 125 V AC and 35 A at 250 V AC. Select this part only when the prospective short-circuit current at the point of use does not exceed those values at the corresponding voltage. Exceeding the interrupt rating can cause the fuse to rupture rather than clear the fault safely.

Simple push-in installation

Insert the fuse into a compatible HTB holder until it seats firmly in the clips. The non-rejection design means it fits any 20 mm by 5 mm clip without a keying feature. The most common error is using a fuse with a lower interrupt rating than the circuit can deliver, which risks violent failure under fault conditions.

How it compares

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Price $14.99
Cheaper than about 87% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameEATON BUSSMANN

Questions about this item

What does the 125mA rating mean once the fuse is installed in a circuit?

The fuse will carry up to 125mA continuously and open after a time delay if the current exceeds that value, protecting downstream components from sustained overloads.

What does the interrupt rating of 10kA at 125V AC and 35A at 250V AC cap in practice?

It defines the maximum prospective short-circuit current the fuse can safely interrupt at each voltage; above those limits the fuse may not clear the fault safely.

What physical dimensions and mounting style does this 20mm by 5mm cylindrical glass fuse need?

It fits standard 5x20mm fuse clips or holders such as the HTB series block; the glass body is 20mm long and 5mm in diameter with no rejection feature.

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