Eaton 20A British Standard Fuse, A2, 660V ac, 73mm

As the fuse allows for the starting surge of a motor its full load current must not exceed the lesser of the dual current rating. e.g. 20 M25 must not have a continuous load of greater than 20A

Breaking capacity 80kA ac 40kAdc
Rated up to 550Vac/ 250Vdc (Type A1) & 660Vac/ 460Vdc (Type A2)
General purpose (gG) and dual motor rated (gM) types
Low power dissipation
660Vac rated (A1 types 415Vac)
ASTA 20 certified

As the fuse allows for the starting surge of a motor its full load current must not exceed the lesser of the dual current rating. e.g. 20 M25 must not have a continuous load of greater than 20A.

Use this general-purpose fuse from Eaton's Red Spot range to protect machinery from the effects of short circuits and overcurrents. It can withstand a reasonably higher current than its rating without rupturing or breaking, so it's suitable for electrical systems that experience short, harmless bursts of energy.
The fuse comes equipped with offset brackets so it can be attached to a fuse holder. This provides insulation and protects operators and equipment from electric shocks.

• High temperature tolerance prevents fuse element from exploding or arcing in the event of overcurrent
• High rupture capacity (HRC) for long-term use
• T speed for tolerance to short energy spikes
• Low power loss for improved energy efficiency

An overcurrent is a condition where the supply current to a circuit is higher than its normal operating current. This could be due to an overload or a short circuit.

To ensure it works properly and safely, a fuse's current rating must be above the normal operating current of the circuit, so it's important to check compatibility before you install your fuse.

Eaton formerly known as Bussmann