An Absolute Beginners’ Guide to BS88 Fuses

Total Control and Distribution’s useful guide to BS88 fuses in plain English

BS88 fuses box by Ching Design.
Could there be some British Standards 88 fuses in this box? Image by Ching Design (via Shutterstock).

BS88 fuses have been around since 1919. That is almost a century ago. Prior to then, there was a number of local standards for fuse design. Shortly after the First World War, a national British Standard for fuses was created: that of BS88.

When introduced in 1919, the BS88 standard was limited to fuses with current up to 100A. The original range of BS88 fuses were available in 10, 30, 60, and 100A ratings. They covered voltages up to 250V.

In 1931, BS88 fuses were given two more parameters. Further to their current ratings and maximum voltage, short circuit capability and operating temperature limits were added to the standard. This time, it was stated that fuselinks should blow in less than 30 minutes, whilst at 1.9 times the rated carrying current. Plus, that they should be able to withstand 1.6 times the rate current, again for half an hour.

As seen on our website, we at TCAD sell the fuses for industrial purposes. There are also subclasses: from BS88-1 to BS88-6 fuses, which were created in 1988. These were updated from 2007 to 2011.

Total Control and Distribution, 05 January 2017.

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