UT Universal Terminals - Screw connection terminal blocks
Phoenix Contact screw terminal blocks are designed for very high demands. An important characteristic is the maintenance-free connection of conductors. It is not necessary to tighten the terminal screws. The screws are prevented from loosening by the "Reakdyn principle", a screw locking technique developed by Phoenix Contact.
Very large conductor cross sections up to 240 mm² can also be wired gas-tight and with long-term stability thanks to the high contact forces.
Material properties
The metal parts of the screw terminal blocks are made of high-grade, strain-crack and corrosion-proof copper alloys as a standard feature. This eliminates the possibility of electrolytic corrosion in the presence of moisture and the risk of rusting. The consequences, such as unreliable electrical contacts and/or jammed screws, are also prevented.
A further advantage is the low temperature rise due to good electrical conductivity. The surface of the metal parts is protected by a lead-free, galvanic nickel or tin plating.
This elastic plastic with high impact strength is halogen-free and UV-resistant. Further characteristics are the good tropical and termite resistance, high chemical resistance and the excellent aging characteristics.
Polyamide 6.6 can be used with operating temperatures up to 130°C and is certified for the inflammability class V0 in accordance with UL 94.