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Five ceramic cylindrical fuses, 20 mm long, 5 mm diameter, silver end caps

Bussmann

Bussmann S501-4-R Ceramic Fuse 4A 250V 1.5kA 5 pack

SKU CH-DB4T-FHF8K

Pack of five 4 A, 250 V AC fast-acting ceramic fuses with 1.5 kA interrupt rating

  • Fast-acting protection clears faults quickly
  • 5 kA interrupt rating at 250 V AC handles short circuits
  • Ceramic body withstands high temperatures
  • 5 × 20 mm cylindrical size fits standard holders
  • UL JDYX2 guide plus CSA and CE marks confirm compliance

Bussmann S501 4 A Ceramic Fuse Pack

This pack contains five cylindrical ceramic fuses rated 4 A at 250 V AC with a 1.5 kA interrupt rating. They are fast-acting, non-indicating devices intended for line protection in electrical and generator circuits. Each fuse body measures 20 mm long by 5 mm diameter and conforms to the S501 series. Equivalent series include GDA, 216 and GSD for cross-reference.

Installation Notes for S501 Fuses

The fuses are non-rejection style and fit compatible HTB-series fuse blocks without a keyed holder. Insert each fuse by hand until fully seated; no tools are required. Common issues include using a fuse with the wrong ampere or voltage rating, which defeats protection, or installing a fuse in a circuit exceeding the 1.5 kA interrupt capacity. Always de-energise the circuit before replacement.

Pre-Order Checklist for 4 A Ceramic Fuses

Verify that your equipment specifies a 4 A, 250 V AC fast-acting fuse in the 20 mm x 5 mm cylindrical format. Confirm the available interrupt rating meets or exceeds the 1.5 kA rating of these fuses. Check that the fuse block or holder accepts non-rejection S501-series bodies. Ensure the application does not require an indicating or time-delay fuse type.

Highlights

  • Fast-acting protection clears faults quickly
  • 5 kA interrupt rating at 250 V AC handles short circuits
  • Ceramic body withstands high temperatures
  • 5 × 20 mm cylindrical size fits standard holders
  • UL JDYX2 guide plus CSA and CE marks confirm compliance

Specifications

BrandEATON BUSSMANN

Questions about this item

How can I verify the fuse is working correctly after installation?

A functioning fuse shows continuity when tested with a multimeter. If the circuit remains dead and the fuse element is visibly broken inside the ceramic body, the fuse has operated as intended and must be replaced.

What comes in the package and what extra items might be needed?

The box contains five S501-4-R ceramic fuses rated 4 A, 250 V AC, 1.5 kA interrupt. A compatible HTB-series fuse block or holder is not included and must be purchased separately.

Which version should I choose if I need a direct replacement for a GDA or 216 series fuse?

The S501-4-R is listed as equivalent to Bussmann GDA, S501, Littelfuse 216 and Mersen GSD series, so select this 4 A, 250 V AC, 20 mm × 5 mm ceramic model for a direct swap.

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