ABB 1SVR405661R0000 CR-U 21 Pluggable Module
https://www.sawab.app/shop/1svr405661r0000-abb-1svr405661r0000-cr-u-21-pluggable-module-2701
https://www.sawab.app/web/image/product.template/2701/image_1920?unique=b300c89
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Function: Accessory for interface relays CR-USub-Function: Pluggable function module for universal relay socketsSub-Function 2: Reverse polarity protection Free-wheeling diodeRated Control Supply Voltage (Us): 6 ... 220 V DC 6 ... 230 V DC
