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Five cylindrical glass fuses with metal end caps

Bussmann

Bussmann GMC-5-R Glass Fuse 5A 125V 10kA 5pk

SKU CH-ZN90-29C6D

Time-delay glass fuse rated 5 A at 125 V AC with 10 kA interrupt capacity, 20 mm by 5 mm cylindrical body, pack of five

  • Time-delay design handles startup surges without nuisance blows
  • 10 kA interrupt rating clears faults safely at 125 V AC
  • Standard 20 mm × 5 mm glass body fits common fuse blocks
  • CSA Class 1422-01 and UL 248-14 compliance for code-approved installs
  • Five-piece pack keeps spares on hand for quick replacement

Glass Fuse for Low-Voltage Circuits

This pack contains five cylindrical glass fuses rated at 5 A and 125 V AC. They belong to the GMC series and use a time-delay, single-element design. The non-rejection body fits compatible HTB fuse blocks. They suit automotive, generator and general electrical supplies where low-voltage overcurrent protection is required.

Interrupt Rating and Capacity Headroom

Each fuse carries a 10 kA interrupt rating at 125 V AC, providing high fault-current withstand for small circuits. The 5 A continuous rating handles steady loads up to that level with time-delay tolerance for brief inrush. Circuits demanding more than 5 A or voltages above 125 V AC exceed the device limits. The glass body and 20 mm by 5 mm dimensions restrict use to holders accepting that form factor.

Agency Certifications Determine Suitability

The fuses meet UL 248-14 Guide JDYX, CSA Class 1422-01 and CE standards. These approvals confirm compliance for North American and European installations where listed components are mandatory. Projects requiring different certifications or a rejection-style fuse cannot use this part. Equivalent series references include Littelfuse 239 and Mersen GSC for cross-referencing.

How it compares

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Price $10.99
Cheaper than about 92% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameEATON BUSSMANN

Questions about this item

Will these 5 A, 125 V AC glass fuses protect the same circuits as my existing 20 mm × 5 mm cylindrical fuses?

Yes, the GMC-5-R matches the 20 mm length and 5 mm diameter of standard cylindrical glass fuses, so it fits the same holders and provides the same 5 A, 125 V AC rating.

How can I confirm each fuse is good after installing it in my fuse block?

With power off, use a multimeter on continuity or low-ohms range across the fuse ends; a reading near zero ohms shows the single element is intact and the fuse is ready for service.

What comes in the pack and do I need a separate fuse block?

The pack contains five GMC-5-R glass fuses; a compatible HTB-series fuse block is not included and must be purchased separately if you do not already have one.

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