![]() It is crucial to note that removal of the earth connection is life-threatening in any case as there would no longer be protection against electric shock! In the case of all 3-pole plugs that conform to the standards, this earth connection has been constructed as a leading connection, which means that the earth connection closes the contact before the other two pins make power contact.Īt the same time, in most countries in the world, 2-pole mains sockets have been replaced with 3-pole earthed sockets, which can accept both 2-pole and 3-pole plugs. Shop Power 3-Pole 175A Terminal Blocks-Mounting Holes Within Barriers By Bussmann (Eaton) (16220-3) At Graybar, Your Trusted Resource For Power Distribution. ![]() There is an exception to this, which is the Schuko plug where the earth connection is located on the side of the plug and made of metal contact surfaces. In all plug types, this earth connection was fitted as a 3rd pin. ![]() In order to provide safety, an earth connection had to be fitted to 2-pole plugs for these devices. In most countries in the world, 2-pole mains sockets have been replaced with earthed sockets which can accept both 2-pole and 3-pole plugs.ģ-pole means that the device plug is earthed and that it normally has three pins, of which two are used to transfer the current and one is used as personal protection.Īs previously mentioned above, due to the predominance of more powerful devices in the 1930s, (normally above around 500 watts), the problem of a possible electric shock became a hazard for users. Submit an Application Story about this item. Go to the Product Overview for this category. In the case of less powerful devices (normally up to around 500 watts), 2-pole connections are still the norm since these can be produced more economically. Edison open terminal block, 175A, 3-pole, line side: 1 opening accepts 2/0 AWG to 8 AWG, load side: 1 opening accepts 2/0 AWG to 8 AWG, panel mount, UL 1059 recognized. The date & lot code information will be displayed on your packaging label as provided by the manufacturer. This is due to the plug pins, which are often not thick enough to continuously resist the heat caused by the higher power. Panel Mount Barrier Terminal Block, 335 A, 600 V, 3 Pole, 1, Screw. For example, if more than 2.5 amperes (in other words, more than 500 watts), are transferred through a 2-pole plug, it is possible that damage caused by smouldering or burning can occur under certain conditions. The couplers to be connected to the distribution block are. In addition, 2-pole plugs are not constructed to continuously withstand high currents. Distribution block with one in (for a socket) and three out (for plugs). ![]() Earthed plug systems are therefore known as 3-pole systems, even though this is not quite technically correct. Versions are available for both DIN-rail mounting and direct mounting on the mounting plate via mounting flanges. They are available as 35, 50, 95 and 185 mm 2 (2, 1/0, 4/0 AWG 350 kcmil) terminal blocks. This problem was solved by introducing an earth connection, mainly in the form of a 3rd pin. The high-current rail-mount terminal blocks with POWER CAGE CLAMP use spring pressure to connect conductors up to 185 mm 2 (350 kcmil). However, with the increase in more and more powerful devices, suffering from electric shock became a higher risk. DEGSON has passed ISO9001, ISO14001, ISO80079-34, ISO/TS22163 and IATF16949 management System certification and it is a national high-tech enterprise. It has professional laboratories accredited by both UL and VDE. Originally, all electrical devices were fitted with 2-pole plugs, which means that the devices were not earthed and that all mains sockets were constructed for 2-pole plugs. Founded in 1990, DEGSON is a world-famous industrial connection solution provider. Terminal blocks are available as rows, but each terminal connects to only a single wire. Terminal blocks come in a range of shapes, sizes and ratings, but always terminate a single wire (single pole) and are never multi-pole. 2-pole means that the device plug is not earthed and it normally has two pins that transmit electricity. Terminal blocks are connectors that terminate a single wire and connect it to a circuit or other system.
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