LSN circuit breakers

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haptism

haptism

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Today I come across some mcbs in a CU ive never seen, theyre made by LSN, single pole B6, but dont appear to have any BS, EN ect. They have a CE mark, AC 230/400 and have a breaking capacity of 10Ka. Anyone ever seen these, are they cosha ?? Being rated at 230v-400v I dont expect they that old. Found on an MK board serving ther existing circuits.
 
some on ebay £6.50 used. guys having a laff.
 

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