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Five cylindrical glass fuses with metal end caps

Bussmann

Bussmann GMD-1-R Glass Fuse 1A 250V 10kA 125V 5pk

SKU CH-0WYA-4K009

Pack of five 1A glass time-delay fuses rated 250V AC with 10kA interrupt at 125V AC

  • Time-delay design protects circuits from brief surges
  • 1 A rating at 250 V AC suits low-current applications
  • High 10 kA interrupt capacity at 125 V AC handles severe faults
  • 5 mm × 20 mm glass body fits standard fuse holders
  • Pack of five gives ready spares for maintenance

Glass Fuse 1A 250V AC 5 Pack

This pack contains five cylindrical glass fuses rated at 1 ampere and 250 volts AC. Each fuse features a time-delay characteristic and a non-rejection body style measuring 20 millimetres in length by 5 millimetres in diameter. They provide an interrupt rating of 100 amperes at 250 volts AC and 10 kiloamperes at 125 volts AC.

Suits Low-Current Circuit Protection

These fuses suit technicians and hobbyists protecting low-current circuits in automotive, generator or general electrical equipment. They are not suitable for circuits requiring a higher amperage rating, a rejection-type body or a faster-acting blow characteristic. Buyers needing a different voltage or interrupt rating should select an alternative series.

Simple Fuse Block Installation

Installation consists of inserting the fuse into a compatible HTB series fuse block or equivalent 5-millimetre diameter holder. The glass body allows visual inspection of the element after a fault. A common error is exceeding the 1 ampere rating or using a holder not rated for the 10 kiloampere interrupt capacity at 125 volts AC.

How it compares

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

Price $11.99
Cheaper than about 91% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameEATON BUSSMANN

Questions about this item

What fuse holder or block series accepts the 20 mm by 5 mm cylindrical glass body of this GMD-1-R fuse?

The compatible fuse block series listed is HTB, which matches the 20 mm length and 5 mm diameter of this fuse.

Can this 1 A time-delay fuse replace a Littelfuse 239 or Mersen GSC in existing equipment?

Yes, the specifications list Littelfuse 239 and Mersen GSC as equivalent series, so it can serve as a direct replacement.

How do I verify the fuse is intact after installing it in a 250 V AC circuit?

Check for continuity with a multimeter; a good fuse will show low resistance, while a blown fuse will show an open circuit.

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