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Five cylindrical glass fuses with metal end caps

Bussmann

Bussmann GMD-500-R Glass Fuse 500mA 250V 10kA 5 Pack

SKU CH-S9R3-M7CXA

Pack of five 500 mA 250 V time-delay glass fuses with 10 kA interrupt rating at 125 V

  • Time-delay characteristic prevents nuisance blowing during brief surges
  • 10 kA interrupt rating at 125 V AC handles high fault currents safely
  • Glass body allows instant visual inspection of element status
  • Standard 20 mm × 5 mm cylindrical size fits common fuse holders
  • Pack of five provides ready spares for maintenance or replacement

Bussmann GMD-500-R Glass Fuse Pack

This pack contains five cylindrical glass fuses rated at 500 mA and 250 V AC. They suit low-current circuits in automotive, generator or general electrical equipment where time-delay protection is required.

Installation and Common Issues

Each fuse measures 20 mm long by 5 mm diameter and fits standard HTB-series fuse blocks. The non-rejection body allows insertion either way, but the glass tube can crack if forced into a corroded or misaligned holder.

Compatibility Checks Before Ordering

Verify that your circuit demands a 500 mA time-delay element with a 10 kA interrupt rating at 125 V AC or 100 A at 250 V AC. Confirm the holder accepts a 5 mm diameter glass body and that CSA Class 1422-01 or UL 248-14 approval meets local code requirements.

How it compares

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

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

How do I verify the GMD-500-R fuse is working after installation?

Apply power to the protected circuit; if the equipment operates normally and the glass body shows no darkening or broken filament, the fuse is functioning.

What comes in the package and what must I source separately?

The pack contains five 20 mm x 5 mm glass time-delay fuses; a compatible HTB-series fuse block or holder is sold separately.

Which rating should I choose for a 250 V AC circuit needing 500 mA protection?

Select this GMD-500-R version rated 500 mA at 250 V AC with a 100 A interrupt rating at that voltage.

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