ABB i-bus ES/S 4.1.1 Instrucciones De Instalación Y Funcionamiento página 24

Installation
T h e supply circuit m u s t b e f u s e d
accordingly, e.g., 10 A, S260 B10 automatic
circuit-breaker. In the case of insulation tests
which, unlike Standard DIN VDE 0100, Part
610, involve measurement across phase to
neutral, the device must be disconnected
otherwise it may be damaged.