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 Industry RJ45 coupler insert, vertical plug-in direction, 90° to the mounting rail, compliance with class E in accordance with ISO/IEC 11801, DIN EN 50173-1, suitable for 10 GBit Ethernet (IEEE 802.3an), remote powering (PoE, PoE plus, UPoE) and HDBaseT, increased vibration and shock resistance thanks to 4 springs on the shielding plates, the width of 1TE enables the installation of up to 12 devices in a standard electrical distributor, 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 appropriate contact terminals