- load unit has a 100A SPSN isolator as the main switch and a 30mA residual current circuit - breaker[...] whereby all isolator ways are numbered 1 19 while [...]
- circuit numbering system: The unit has a 100A SPSN isolator as the main switch and a 30mA residual[...] is a sub - circuit numbering system whereby all isolator ways are numbered [...]
in the rear of the moulded units. The new units offer DP isolator or RCD incoming main switch options[...]. They include isolator - controlled single and dual RCD units, dual RCD variable split - load boards
