Connection unit for mounting on a TH35 mounting rail in accordance with DIN EN 60715 in electrical distributors for domestic and industrial installations, equipped with an E-DAT module RJ45 coupling, plug direction inclined 45° downwards, compliance with class E, A according to ISO/IEC 11801, DIN EN 50173-1 suitable for 10GBit Ethernet (IEEE 802.3an), remote powering (PoE, PoE plus and UPoE) and HDBaseT, the width of 1TE enables the installation of up to 12 REGplus in standard electrical distributors, when installed as a device of protection class I, the potential equalization is carried out via a switchable integrated potential equalization spring directly via the mounting rail, which is to be connected to the building potential equalization via corresponding contact terminals, variants: E-DAT module coupling 180°, E-DAT module coupling 90°