Bussmann
Bussmann S500-63-R Glass Fuse 63mA 250V AC 35A 5 PK
Pack of five fast-acting glass fuses rated 63 mA at 250 V AC with a 35 A interrupt capacity
- Fast-acting protection interrupts faults in milliseconds
- 35 A interrupt rating handles 250 V AC surges safely
- Compact 20 mm x 5 mm glass body fits standard holders
- CSA and UL certified for code-compliant installations
- Five-fuse pack keeps spares ready for maintenance
What this fuse is and who it fits
The Bussmann S500-63-R is a 63 mA, 250 V AC glass fuse rated for a 35 A interrupting capacity at that voltage. It suits equipment that requires a fast-acting, non-rejection cylindrical fuse in the 20 mm by 5 mm form factor. The five-pack quantity covers multiple replacement points or spares for maintenance kits. Builders needing a different current rating or a rejection-style fuse should select another part.
Behaviour under sustained load
The fuse uses a single-element, fast-acting design that opens quickly once current exceeds the 63 mA rating. At its rated 250 V AC it will interrupt fault currents up to 35 A without sustained arcing. Because it is not a time-delay type, it will not tolerate prolonged inrush or overload conditions above the nominal value. Continuous operation at or near the rated current is within design limits.
Thermals noise and power draw
The glass body and cylindrical construction dissipate heat through the fuse block contacts during normal operation. No audible noise is produced by the fuse element itself. Power loss across the fuse is minimal at the rated 63 mA. The component carries CE, CSA and UL certifications and is compatible with HTB series fuse blocks.
Highlights
- Fast-acting protection interrupts faults in milliseconds
- 35 A interrupt rating handles 250 V AC surges safely
- Compact 20 mm x 5 mm glass body fits standard holders
- CSA and UL certified for code-compliant installations
- Five-fuse pack keeps spares ready for maintenance
Specifications
| Brand | EATON BUSSMANN |
|---|
Questions about this item
Does the 63 mA fuse generate noticeable heat or noise during continuous operation?
A glass fuse is a passive component; it produces no audible noise and negligible heat at its 63 mA rating under normal load.
What fuse holder or block series is required to use these 5 mm × 20 mm cylindrical fuses?
The supplier notes compatibility with the HTB fuse block series for this 5 mm diameter, 20 mm length body style.
Can these fast-acting S500 fuses replace older GDB or 217 series fuses in existing equipment?
Yes, the data lists Bussmann GDB, Littelfuse 217 and Mersen GSB as equivalent series for direct substitution.
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