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Five cylindrical ceramic fuses with silver end caps

Bussmann

Bussmann S501-2.5-R Ceramic Fuse 2.5A 250V 1.5kA 5PK line protection

SKU CH-3JHG-TA3TC

Ceramic fuse rated 2.5 A, 250 V AC with 1.5 kA interrupt rating, fast-acting, pack of five

  • Fast-acting response clears over-current faults quickly
  • 5 kA interrupt rating at 250 V AC handles high fault energy
  • Ceramic body withstands thermal stress during interruption
  • 20 mm × 5 mm cylindrical size fits standard fuse holders
  • Pack of five provides ready spares for maintenance

Product Identity

The Bussmann S501-2.5-R is a fast-acting ceramic fuse rated at 2.5 amps and 250 volts AC. It suits engineers and technicians who need reliable overcurrent protection for control circuits, instrumentation or small power supplies. The 5 mm by 20 mm cylindrical body fits standard fuse holders used in industrial and laboratory equipment.

Pack Contents

Each pack contains five identical fuses, giving immediate spares for multi-point installations or future maintenance. The non-indicating design means the element is not visible after operation, so a tester is required to confirm status. Equivalent series references include GDA, GSD, 216 and S501 for cross-referencing existing bills of material.

Protection Limits

The fuse interrupts up to 1.5 kA at 250 V AC, providing adequate breaking capacity for typical low-energy branch circuits. It is not suited for high-fault-current mains distribution or direct battery bank protection where available short-circuit current exceeds the interrupt rating. The single-element construction gives consistent fast-acting response within its defined current and voltage envelope.

How it compares

Measured against everything we stock in Breakers & Circuit Protection, at today’s prices. Recalculated every night.

Price $17.99
Cheaper than about 82% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameEATON BUSSMANN

Questions about this item

Does the 20 mm ceramic body need any periodic replacement or maintenance?

The fuse is a single-element, non-rejection device with no moving parts; it requires no maintenance and is replaced only after it interrupts a fault.

What is the first limit reached during a sustained overload at the 2.5 A rating?

The fast-acting element opens once current exceeds 2.5 A, providing the primary protection limit before heat builds up in the circuit.

How much heat or noise does the fuse generate when carrying 2.5 A continuously?

The ceramic body dissipates minimal heat at rated current and produces no audible noise during normal operation.

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