Eaton 80A British Standard Fuse, A4, 660V ac, 93.7mm

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.

Eaton formerly known as Bussmann