Indoor disconnectors, loadbreak and earthing switches

This switching device is used for the switching of no-load circuits in the MV switchgears cabinets or in MV switching stations. The disconnector drives can be either of electric motor or hand operated type, with manual actuation of the electrical drives. The QAKZ marking denotes the QAK disconnectors, completed with an earthing switch. 

This switching device is Used for the switching of no-load generator circuits in the MV switchgears cabinets or in microwave switching stations. The main Advantages of this devices are high rated current and also top endurance in terms of rated short circuit current.

HD = HEAVY DUTY; This switching device is used for the switching of no-load DC or high frequency circuits in the MV switchgears in cabinets or special services. Typically used in chemical plants - electrolysis, production of graphite bars, steel mills - casting, melting etc. The main advantages of this devices are extremly high rated current and robust construction also suitable for extrem conditions.

This switching device is used for the change-over switching of no-load circuits in the MV switchgears cabinets or in MV switching stations. The change-over switch drives can be either of electric motor or hand operated type, with manual actuation of the electrical drives. This device can be done in various types according request and switching schemes. The PQAK change-over switch can be even equiped with integrated earthing switch.

The QDS disconnector switches (load break switches) are switching devices used to switch electrical circuits in load operating state. They find usage in switchgear cabinets and MV switching stations of indoor type. Modular design allows easy and cost effective maintenance.

This switching device is used for the grounding of electric circuits without voltage, in some cases is possible to use them for discharging of capacitors or capacity current of the cable/grid. This devices are intended to use for the MV switchgears cabinets or in MV switching stations. The earthing switch can be either of electric motor drives or hand operated type, with manual actuation of the electrical drives.

Earthing switches (short-circuiter) type QZR with short-circuit making capacity are operationally easy switching devices used indoors in high voltage substations or in switchgear cabinets. The earthing switch is with instantaneous movement of the main contacts to the on position, which provides guaranteed making capacity. They can be used as a safety device in the input fields HV switchgear.