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Main switch short circuit capacity.

Some guidance please.

Three phase TN-S supply from a private 800 kVA transformer. Distribution via a 240mm2 4 core SWA approx 20m in length from a transformer mounted feed pillar and protected by 315A fuses. At the intake position 100A BS 1361 type II fuses are fitted. I was looking to install a REC 4 main switch down stream from which would be three phase distribution by 10kA rated MCB's. My question is about the suitability of the main switch and its short circuit capacity at it's point of installation with regard to prospective fault current at this point which will be greater than 16kA or do the BS 1361 afford adequate protection for the switch ? Your thoughts please.
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  • Having contacted technical regarding the REC4 who informed me the switch is tested up to 16k and were unable to confirm operation above this. Without confirmation as to suitability it looks as though I should consider another switch.


    Thanks for the feedback
Reply
  • Having contacted technical regarding the REC4 who informed me the switch is tested up to 16k and were unable to confirm operation above this. Without confirmation as to suitability it looks as though I should consider another switch.


    Thanks for the feedback
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