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Small white ceramic cylinder fuse 20 mm long 5 mm diameter

Bussmann

Bussmann GDA-50MA 50mA 250VAC cylindrical fast-acting ceramic fuse

SKU CH-NKWG-FMHQ6

A 50 mA, 250 V AC fast-acting ceramic fuse with a 1.5 kA interrupt rating in a 20 mm by 5 mm cylindrical body

  • Fast-acting protection for sensitive circuits
  • 50 mA rating limits fault current quickly
  • 250 V AC rating suits mains-powered equipment
  • Ceramic body withstands high interrupt energy
  • 5 kA interrupt rating clears short circuits safely

Purpose and fit

This is a 50 mA 250 V AC cylindrical fast-acting ceramic fuse from the GDA series. It suits low-current circuit protection in equipment that accepts a 20 mm by 5 mm fuse.

Interrupt and voltage limits

The fuse carries a 1.5 kA interrupt rating at 250 V AC and is non-indicating. It must not be used above its rated voltage or in circuits where prospective fault current exceeds that interrupt rating.

Compatibility checks

Confirm your fuse holder accepts a 20 mm length and 5 mm diameter ceramic body. Verify the application needs a fast-acting, non-rejection type and that the 50 mA rating matches the circuit design.

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

Should I choose the 50 mA GDA fuse or a different current rating?

Select the 50 mA rating only if your circuit requires exactly 50 mA of overcurrent protection. The GDA series is offered in multiple ampere ratings; using a higher or lower value will change the protection threshold and may leave equipment unprotected or cause nuisance trips.

What does the 1.5 kA interrupt rating mean once the fuse is installed?

It means the fuse can safely break a fault current up to 1.5 kA at 250 V AC without rupturing. If the prospective short-circuit current in your circuit exceeds 1.5 kA, a fuse with a higher interrupt rating is required.

How does the 5 x 20 mm ceramic body limit what I can use it with?

The 5 mm diameter and 20 mm length fit standard 5 x 20 mm fuse holders such as the HTB block series. It will not fit holders designed for other sizes, and the ceramic body is non-rejection so it cannot enforce a specific fuse type mechanically.

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