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Are the iSW range of Din rail mounted switches suitable for Isolation?

Yes the I switch range of switches 20 to 125A are suitable for Isolation.

These devices are Switch-Disconnectors therefore they have the functions of
  • Isolation - when in the “Open” position the isolation at a defined withstand voltage is assured between the open contacts of the main circuit of the switchgear.
  • Load Switching - they are abie to copen and lose circuits under load
These two functions are defined in the standard IEC 60947
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