The fuse links type CMF are specially designed for motor circuit applications. They are tested according to the IEC Publication 60282-1 (IEC 282-1) and Publication 60644 (IEC 644). IEC 60644 applies to fuse links used with motors that are started direct-on-line in alternating current systems. High-voltage fuses used in motor circuits must be able to withstand, without deterioration, the repeated surges associated with motor starting.
The dimensions are in accordance with DIN 43625 andIEC 60282-1.
Although a motor fuse is normally run at a stationary current, which is much lower than the fuse rated current, the low-loss characteristics of the CMF fuses make them especially suitable in compact contactor compartments.