Bussmann
Bussmann GMC-63-R Glass Fuse 63mA 250V AC 5 PK
Pack of five 20 mm glass time-delay fuses rated 63 mA at 250 V AC with 10 kA interrupt at 125 V AC
- Time-delay protection handles temporary surges
- 63 mA rating suits low-current circuits
- 250 V AC rating fits mains-voltage equipment
- 10 kA interrupt rating at 125 V AC clears high faults
- Pack of five fuses keeps spares on hand
What this fuse protects
The EATON BUSSMANN GMC-63-R is a cylindrical glass fuse rated at 63 mA and 250 V AC. It suits equipment that needs a time-delay element to tolerate brief inrush currents without nuisance opening. The five-piece pack gives spares for maintenance or multiple circuits.
Interrupt rating decides fit
At 125 V AC the fuse interrupts 10 kA, while at 250 V AC it interrupts 35 A. Choose this part only when the prospective short-circuit current in your application stays within those limits. The non-rejection body fits standard HTB fuse blocks and matches Littelfuse 239 and Mersen GSC equivalents.
Thermal behaviour in service
The time-delay characteristic lets the element absorb temporary overloads without opening, reducing thermal cycling stress. The glass body provides visible indication of a blown element. No forced cooling or special ventilation is required for normal operation at the rated current.
Highlights
- Time-delay protection handles temporary surges
- 63 mA rating suits low-current circuits
- 250 V AC rating fits mains-voltage equipment
- 10 kA interrupt rating at 125 V AC clears high faults
- Pack of five fuses keeps spares on hand
Specifications
| Brand | EATON BUSSMANN |
|---|
Questions about this item
How does the 63 mA rating protect a circuit once the fuse is installed?
The fuse carries up to 63 mA continuously and opens after a time-delay when current exceeds that level, interrupting fault current up to 10 kA at 125 V AC or 35 A at 250 V AC.
What does the 10 kA at 125 V AC and 35 A at 250 V AC interrupt rating limit in practice?
It defines the maximum prospective short-circuit current the fuse can safely break at each voltage; above those levels the fuse may not clear the fault reliably.
What physical dimensions and mounting style does the 20 mm × 5 mm cylindrical glass body require?
It fits standard 5 mm × 20 mm fuse clips or holders such as the HTB series; the glass cylinder simply pushes into the clips without a rejection feature.
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