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Bussmann

Bussmann S505-500-R Ceramic Fuse 500mA 250V 1.5kA 5pk

SKU CH-R7RT-4H2E4

Ceramic time-delay fuse rated 500 mA at 250 V AC with a 1.5 kA interrupt rating, supplied in a pack of five

  • Time-delay protection prevents nuisance trips
  • 500 mA rating suits low-current circuits
  • 250 V AC voltage rating for mains use
  • 5 kA interrupt capacity clears faults safely
  • Ceramic body withstands high temperatures
  • Pack of five fuses for multiple replacements

Bussmann S505-500-R Ceramic Fuse Pack

The Bussmann S505-500-R is a ceramic, time-delay fuse rated at 500 mA and 250 V AC with a 1.5 kA interrupt rating. Each cylindrical fuse measures 20 mm in length and 5 mm in diameter. The pack contains five non-indicating, non-rejection fuses suited for general circuit protection.

For low-current AC circuit protection

These fuses suit technicians and maintainers protecting equipment drawing up to 500 mA on 250 V AC lines where a time-delay characteristic is required. They are not for applications needing a visual blown-fuse indicator, a rejection-style body to prevent misinsertion, or a higher interrupt capacity than 1.5 kA at 250 V AC.

Five-fuse pack for spares and replacements

The package quantity of five provides immediate replacements for standard 5 x 20 mm fuse holders and compatible HTB series fuse blocks. The ceramic body and BSI, CCC, CSA, IMQ, SEMKO, UL, VDE certifications support use in compliant equipment designs.

Highlights

  • Time-delay protection prevents nuisance trips
  • 500 mA rating suits low-current circuits
  • 250 V AC voltage rating for mains use
  • 5 kA interrupt capacity clears faults safely
  • Ceramic body withstands high temperatures
  • Pack of five fuses for multiple replacements

Specifications

BrandEATON BUSSMANN

Questions about this item

What fuse block series is compatible with the 20 mm × 5 mm S505 ceramic fuse?

The HTB fuse block series accepts the 20 mm long, 5 mm diameter ceramic body of this S505 fuse.

Can this time-delay fuse replace a Littelfuse 215 or Mersen GSF in the same holder?

Yes — the S505 is listed as equivalent to the Littelfuse 215 and Mersen GSF series, so it fits the same 5 × 20 mm holder.

How can I verify the fuse is intact after installation without an indicator?

Because the fuse is non-indicating, use a multimeter to check for continuity across the ceramic body after fitting it.

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