4 pole isolater amp rating

[n180]

Bit confused about this.

When a simple 4 pole isolater like this plastic wylex one, is rated at 100amp, does that mean, 100amp per phase? So it could have 300amps going through it?

100A 4 Pole Switch with Enclosure to suit Meter Tails c/w Din Rail | Wylex (REC4)

 

[westward10]

100A per phase.

 

[Risteard]

Bit confused about this.

When a simple 4 pole isolater like this plastic wylex one, is rated at 100amp, does that mean, 100amp per phase? So it could have 300amps going through it?

100A 4 Pole Switch with Enclosure to suit Meter Tails c/w Din Rail | Wylex (REC4)

It doesn't really have 300A running through it. Each pole should have a maximum of 100A running through it (considering the type of load too, as the 100A rating may be dependent on the type of load).