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Five glass cylinder fuses with metal end caps

Bussmann

Bussmann GMA-7-R Glass Fuse 7A 125V 200kA 5 Pack

SKU CH-ZWSR-7Z83B

A 7 A fast-acting glass fuse rated 125 V AC with a 200 A interrupt rating, supplied in a pack of five

  • Fast-acting protection clears faults quickly
  • 200 A interrupt rating at 125 V AC handles high fault currents
  • 5 mm × 20 mm cylindrical glass body fits standard fuse holders
  • CE, PSE and UL 248-14 certifications confirm safety compliance
  • Pack of five provides ready spares for maintenance

What this pack contains

Five fast-acting glass tube fuses rated 7 amps at 125 volts AC. Each fuse carries a 200 amp interrupt rating and meets CE, PSE and UL 248-14 standards. They suit low-voltage equipment that requires this exact current and voltage combination.

The rating that decides fit

The 7 amp, 125 volt AC rating with 200 amp interrupt capacity is the single figure that determines compatibility. A circuit needing a different ampere value, voltage or interrupt level cannot use these fuses safely.

How they fit a repair

The 20 millimetre by 5 millimetre cylindrical bodies suit HTB series fuse blocks and similar holders. They replace Bussmann GMA, Littelfuse 235 and Mersen GGM series parts. The glass body allows visual inspection of the element. They are not for circuits above 125 volts AC or for rejection-type holders.

How it compares

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

Price $7.99
Cheaper than about 95% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameEATON BUSSMANN

Questions about this item

What does the 200 kA interrupt rating mean when the fuse is installed in a 125 V AC circuit?

It means the fuse can safely clear a short-circuit current of up to 200 kA at 125 V AC without rupturing the glass body, protecting downstream components and wiring from catastrophic failure.

The fuse is listed as UL 248-14 Guide JDYX2 File E19180 — what does that standard cover in practice?

UL 248-14 governs supplemental micro-fuses like this 7 A GMA series; the guide and file numbers confirm the specific construction and interrupt performance have been investigated and accepted by UL.

Will the 20 mm by 5 mm cylindrical glass body fit a standard HTB series fuse block?

Yes, the GMA series dimensions of 20 mm length and 5 mm diameter match the HTB fuse block series, so these fuses seat correctly in that holder style.

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