Input switching device (ISD) provides protection against short circuits, overloads and leaks in power supply systems with rated voltages up to 380 V, frequency 50 Hz with dead-earthed neutral. Used for input, metering and distribution of power, for infrequent switching of electrical circuits.
ISD is assembled from the single-side maintenance sections in metal cabinets. ISD can consist of one or more floor-mounted cabinets. When connecting ISD to two independent power sources, it is possible to assemble ISD input panels with an automatic switch in one cabinet with a partition between the sections. ISD is assembled with automatic circuit breakers, meters and other equipment depending on the terms of reference.
|Rated current, In||from 16 to 630 A|
|Shock current, Ikp||up to 20 kA|
|Nominal three-phase voltage, Un||380 V|
|Rated frequency, f||50 Hz|
|Protection class||IP31 or IP65|
|Dimensions of a single section (height × width × depth), mm||600-2000 × 450-800 × 220-450|
Design||Depending on the rated current and project requirements, floor-mounted, wall-mounted and integrated versions are available|