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Five glass cylindrical fuses with silver end caps in a clear pack

Bussmann

Bussmann GDC-4A Glass Fuse 4A 250V AC Time-Delay 5 PK

SKU CH-QMF8-VS8QM

Five-pack of 4 A, 250 V AC time-delay glass fuses with a 35 A interrupt rating

  • Time-delay action prevents nuisance trips
  • 4 A rating protects circuits at 250 V AC
  • 35 A interrupt rating handles fault currents safely
  • 20 mm × 5 mm glass body fits standard holders
  • Pack of five gives ready spares for maintenance

Bussmann GDC-4A Glass Fuse Overview

The Bussmann GDC-4A is a cylindrical glass fuse rated at 4 amps and 250 volts AC. It features a time-delay characteristic designed to tolerate temporary surge currents without opening. The fuse measures 20 mm in length and 5 mm in diameter. This pack contains five pieces for replacement or spare inventory.

Time-Delay Protection for Circuits

The time-delay design prevents nuisance blowing during brief inrush events such as motor start-up or transformer energising. It carries a 35 A interrupting rating at 250 V AC, clearing fault currents safely within that limit. The non-rejection body style fits standard fuse blocks including the compatible HTB series. No special rejection feature is required for installation.

Capacity and Headroom Details

The fuse operates continuously at its 4 A rating and withstands short-term overloads up to the time-delay curve limit. It is rated to interrupt a maximum of 35 A at 250 V AC; fault currents above that level require upstream protection. The glass body allows visual inspection of the element status. This pack suits circuits needing 4 A time-delay protection within the stated interrupting capacity.

How it compares

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

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 long will a 4 A glass fuse survive a continuous overload before it opens?

The time-delay element tolerates temporary surges, but sustained current above 4 A will melt the element; exact clearing time depends on the overload magnitude.

How hot does the fuse body get during normal 4 A operation?

Glass body temperature rises with ambient and contact resistance; the fuse is rated for 250 V AC circuits and carries 4 A continuously within its thermal limits.

What fuse holder or block do I need to install these 5 mm × 20 mm fuses?

Compatible HTB-series fuse blocks accept the 5 mm diameter by 20 mm length cylindrical body; verify the block’s voltage and current ratings match your circuit.

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