Bussmann
Bussmann S506-1-R 1A 250V Time-Delay Glass Fuse 5 Pack line protection
Five-pack of 1 A, 250 V AC time-delay glass fuses with a 35 A interrupt rating at 250 V AC
- Time-delay characteristic prevents nuisance tripping on startup surges
- 35 A interrupt rating at 250 V AC handles fault currents safely
- 20 mm × 5 mm cylindrical glass body fits standard fuse holders
- cURus, IMQ and MITI/JET recognition confirms compliance with multiple standards
- Pack of five provides ready spares for maintenance or replacement
Circuit Protection for Low-Current Circuits
The Bussmann S506-1-R is a 1A, 250V AC glass fuse designed for line protection in electrical equipment. It suits technicians and hobbyists needing reliable overcurrent protection for control circuits or small appliances. The time-delay characteristic prevents nuisance opening during brief inrush currents. This pack contains five cylindrical fuses measuring 20mm in length and 5mm in diameter.
Sustained Load Behaviour and Interrupt Rating
Under continuous operation at rated current, the fuse carries 1A without opening. The time-delay element tolerates temporary overloads, allowing motors or transformers to start without tripping. If a fault exceeds the design limit, the interrupt rating of 35A at 250V AC ensures the glass body breaks the circuit safely. The single-element construction provides a predictable response to sustained overcurrent conditions.
Installation Notes and Common Issues
The 20mm x 5mm cylindrical body fits standard fuse clips and compatible HTB series fuse blocks. No special tools are required; the fuse presses into place. A common error is substituting a fast-acting fuse, which removes the inrush tolerance this time-delay model provides. Verify the circuit voltage does not exceed 250V AC and that the 35A interrupt rating meets the available fault current. The glass body allows visual inspection of the element.
Highlights
- Time-delay characteristic prevents nuisance tripping on startup surges
- 35 A interrupt rating at 250 V AC handles fault currents safely
- 20 mm × 5 mm cylindrical glass body fits standard fuse holders
- cURus, IMQ and MITI/JET recognition confirms compliance with multiple standards
- Pack of five provides ready spares for maintenance or replacement
Specifications
| Brand | EATON BUSSMANN |
|---|
Questions about this item
How much heat does a 1 A time-delay glass fuse generate when it runs continuously?
The fuse is rated for 250 V AC with a 35 A interrupt rating at that voltage; it produces minimal heat during normal 1 A operation and is designed to open safely under fault conditions.
What fuse holder or block do I need to install these 5 mm diameter fuses?
Compatible fuse block series include HTB; the fuses are cylindrical 20 mm long by 5 mm diameter and fit standard holders for that size.
Will these S506 fuses replace the GDC or 218 series fuses already in my equipment?
Yes — the S506 series is listed as equivalent to Bussmann GDC, Bussmann S506, Littelfuse 218 and Mersen GDG series fuses.
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