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Five cylindrical ceramic fuses, 20 mm long by 5 mm diameter, pale body with metal end caps

Bussmann

Bussmann S501-5-R Ceramic Fuse 5A 250V 1.5kA 5pk line protection

SKU CH-242C-NTD55

Pack of five 5 A, 250 V AC fast-acting ceramic fuses with 1.5 kA interrupt rating for line protection

  • Fast-acting protection for sensitive circuits
  • 5 kA interrupt rating at 250 V AC
  • Ceramic body resists high temperatures
  • 5 mm × 20 mm cylindrical size fits standard holders
  • Pack of five fuses for multiple replacements

5 A ceramic fuse for 250 V AC circuits

This pack contains five fast-acting ceramic fuses rated at 5 amperes and 250 volts AC with a 1.5 kA interrupt rating. They suit replacement or spares in equipment that uses the 20 mm by 5 mm cylindrical form factor. The non-rejection, non-indicating design fits standard holders without coding features.

Direct replacements for common series

The fuses cross-reference to Bussmann GDA and S501, Littelfuse 216 and Mersen GSD series, so one part number covers several legacy bill-of-materials entries. CE, CSA and UL JDYX2 markings confirm compliance for the markets those standards cover. Five pieces per pack reduce re-order frequency for maintenance kits.

Verify holder and voltage before fitting

Confirm the fuse holder accepts a 20 mm by 5 mm cylindrical body and is rated for at least 250 V AC. Fast-acting characteristic means the element opens quickly on over-current; it is not a time-delay type for motor-start surges. Ensure the circuit’s prospective short-circuit current does not exceed the 1.5 kA interrupt rating.

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Price $14.99
Cheaper than about 87% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameEATON BUSSMANN

Questions about this item

How often will the 5 A ceramic fuse need replacement under normal line-protection duty?

The fuse is a single-element, fast-acting device rated at 5 A and 250 V AC with a 1.5 kA interrupt rating; it only requires replacement after it has operated to clear a fault.

What electrical limit is reached first during sustained overload on the 20 mm × 5 mm ceramic body?

The 5 A continuous-current rating is the first limit; once current exceeds this value the element melts and interrupts the circuit at up to 1.5 kA.

How much heat does the cylindrical ceramic fuse generate when carrying full load all day?

At the rated 5 A the fuse dissipates only the normal I²R loss of its element; the ceramic body remains within the temperature rise allowed for the S501 series.

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