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Five glass cylinder fuses with metal end caps

Bussmann

Bussmann GDB-2.5A Glass Fuse 2.5A 250V 35A 5PK

SKU CH-5MJA-21GTW

A fast-acting 2.5 A glass fuse rated 250 V AC with a 35 A interrupt rating, supplied in a pack of five

  • Fast-acting protection clears faults quickly
  • 5 A rating suits low-current circuits
  • 250 V AC rating handles mains voltage
  • 35 A interrupt rating stops short-circuit energy
  • 20 mm x 5 mm glass body fits standard holders

Fuse rating and pack size

This pack contains five glass fuses rated at 2.5 A and 250 V AC. They are designed for circuit protection in equipment that requires a fast-acting, non-rejection type fuse. The cylindrical body measures 20 mm in length and 5 mm in diameter. Each fuse carries an interrupt rating of 35 A at 250 V AC.

Behaviour under sustained load

As fast-acting devices, these fuses open quickly when current exceeds the 2.5 A rating. They are not time-delay types, so they will not tolerate prolonged inrush currents or startup surges without interrupting the circuit. The single-element construction ensures a rapid response to overcurrent conditions. Glass bodies allow visual confirmation of the fuse status after a fault event.

Interrupt rating decides suitability

The 35 A interrupt rating at 250 V AC is the critical specification for selecting this fuse. It defines the maximum fault current the fuse can safely interrupt without rupture. Buyers whose circuits can deliver higher prospective short-circuit current need a fuse with a greater interrupt rating. This pack is unsuitable for applications requiring time-delay or high-breaking-capacity characteristics.

How it compares

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

Price $9.99
Cheaper than about 93% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameEATON BUSSMANN

Questions about this item

How much heat does a 2.5 A GDB fuse dissipate when it runs all day?

A 2.5 A glass fuse rated for 250 V AC carries load continuously; its fast-acting element opens at the 35 A interrupt rating if current exceeds design limits.

What fuse holder do I need for the 20 mm by 5 mm cylindrical body?

The 20 mm length and 5 mm diameter fit standard 5 x 20 mm fuse clips or the compatible HTB fuse block series.

Can I mix these GDB fuses with older S500 or Littelfuse 217 types in the same panel?

Yes — GDB, S500, 217 and GSB are listed as equivalent series, so they share the same 2.5 A, 250 V AC rating and 35 A interrupt rating.

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