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What are different between Disconnectors (isolating switches) & Switch disconnectors ?



Disconnectors (isolating switches)
The disconnector is a mechanical device that fulfills in the open position the requirements specified for the isolation function (IEC 60947-1).
The purpose of the isolating function is to cut off the supply from all or a discrete section of the installation by separating the installation or section from every source of electrical energy for reasons of safety.
The key factor here is the opening distance. Isolation must be guaranteed from pole to pole and from input to output, whether this is by means of a visible isolation gap or by suitable design features within the device (mechanical interlocking mechanism).

Switch disconnectors
Switch disconnectors combine the properties of (load) switches and disconnectors. In this case, too, there are a variety of designs such as “normal” switch disconnectors, fuse- switch-disconnectors and circuit breakers.
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