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Sikkert mulig, poenget er jo bare at det får en spenning for å legge inn.

Men hvorfor ikke bare sette inn et vanlig? Dette ramler ned i postkassa di for en slikk og ingenting:

https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2050601.m570.l1313.TR0.TRC0.H0.X200a+relay.TRS0&_nkw=200a+relay&_sacat=0 

Edit:

Eller hva med dette solid-state releet? Tror jammen jeg skal bestille meg et slikt for parallellkobling av batteribankene.

https://www.aliexpress.com/item/SSR-200A-Industrial-SSR-200A-Input-3-32VDC-Output-24-680VAC-industrial-ssr-relay-200a/32745446105.html?spm=2114.01020208.3.25.SzHNPg&ws_ab_test=searchweb0_0,searchweb201602_2_10152_10065_10151_10068_10171_10084_10083_10080_10082_10081_10110_10136_10137_519_10111_10060_10112_10155_10113_10114_437_10154_10056_10055_10054_10182_10059_303_100031_10099_10078_10079_10103_10073_10102_10189_10052_10053_10142_10107_142_10050_10051,searchweb201603_50,ppcSwitch_5_ppcChannel&btsid=df489211-ac9d-4ca8-b0ac-aa2755f085ca&algo_expid=da39d7c1-9271-4e6a-9e6b-66c68598ca7a-2&algo_pvid=da39d7c1-9271-4e6a-9e6b-66c68598ca7a