NDG1-100 is applicable to lines with the AC 50HZ/60HZ, the rated voltage of 415V and rated current of 100A, which is used for line facilities and industrial power distribution system in buildings and similar places as isolating circuits or infrequent make-break operation. Two sets of 3P NDG1-100s plus one set of NCJ1-3G1Z, or two sets of 4P NDG1-100s plus one set of NCJ1-4G1Z, forming a manual transfer switch for the load transfer between two power supplies in the low-voltage circuit to guarantee safe isolation of the circuit.
