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Five glass cylinder fuses with metal end caps

Bussmann

Bussmann GMD-300-R Glass Fuse 300mA 250V AC 10kA 125V AC Pack of 5

SKU CH-QKPF-0MXZN

Pack of five 20 mm glass time-delay fuses rated 300 mA at 250 V AC with a 10 kA interrupt rating at 125 V AC

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

What this fuse protects

This EATON BUSSMANN GMD-series glass fuse is rated at 300 mA and 250 V AC with a time-delay characteristic. It suits low-current circuits in instrumentation, control panels or small appliances where brief inrush currents must be tolerated without nuisance opening. The pack contains five identical cylindrical units.

What to verify before fitting

Confirm the holder accepts a 20 mm by 5 mm cylindrical body and that the circuit voltage does not exceed 250 V AC. The interrupt rating is 100 A at 250 V AC and 10 kA at 125 V AC, so the prospective short-circuit current must stay within those limits. The fuse is non-rejection type and carries CE, CSA Class 1422-01 and UL 248-14 approvals.

Behaviour under sustained load

As a time-delay device, the element withstands temporary overloads above 300 mA for a defined period before opening, reducing false trips during motor start-up or capacitor charging. Under a continuous fault the glass body allows visual confirmation of element status, and the single-element construction ensures consistent clearing time across the five fuses in the pack.

How it compares

Measured against everything we stock in Breakers & Circuit Protection, at today’s prices. Recalculated every night.

Price $21.99
Cheaper than about 77% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameEATON BUSSMANN

Questions about this item

Does the pack of five include a fuse holder or must I buy one separately?

Only the five glass fuses are supplied; a compatible HTB-series fuse block must be purchased separately.

Should I choose the 250 V AC or the 125 V AC rating for my circuit?

Use the 250 V AC rating for circuits up to 250 V AC and the 10 kA rating at 125 V AC for lower-voltage circuits; both are on the same fuse.

What does the 10 kA interrupt rating mean when 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.

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