Manual disconnector LTHM/P-U/D line

high-voltagemultipole

Microelettrica Scientifica disconnectors, available both in electromotorized and in pneumatic versions, are designed to be employed in circuits up to 4kV. Their current ratings, up to 1500A per pole, allow them to fit almost all applications. Their contact technology, based on multi-finger jaws, enables the LTHM and LTHP disconnectors to withstand consistent dynamic currents (up to 220kA). Microelettrica Scientifica’s effort in designing a product range with reduced space outline, sturdy structure and a long mechanical life (over 100000 operations), has led to a worldwide success in railway applications. Poles can be connected in parallel to obtain higher thermal currents on single contact (up to 6,000 Amps). On D versions, poles can be reversed forming NC poles, or single-double pole changeover without additional structure. On D versions, additional upper structure is available to create 1 to 4 changeover poles. 24 combinations are available with more than 130 pole configurations. Several options available for control circuits and for auxiliary contacts connection. Integrated solutions: multiple switches are assembled on frame with customised busbar system and integrated control circuits.