When using the BLITZDUCTORconnect surge protection devices in intrinsically safe circuits, special installation conditions must be taken into account. According to EN 60079-11, 2007 (VDE 0170-7), a minimum distance (thread spacing) of = 50 mm must be maintained between intrinsically safe and non-intrinsically safe signal circuits (connection parts, e.g. connection terminals)! Using the Ex i partition wall PARTITION EXI, this thread spacing is maintained even when the devices are arranged directly next to one another. Particularly suitable for use in conjunction with the DRC IRCM for condition-oriented monitoring of BCO modules.