LOW-VOLTAGE SWITCH Russian patent published in 2014 - IPC H01H9/36 

FIELD: electricity.

SUBSTANCE: low-voltage switch has a housing which holds at least one fixed contact and a movable contact which is engaged and disengaged with the fixed contact, a drive mechanism operably connected to the movable contact, at least first and second terminals electrically connected to the fixed contact and the movable contact, respectively, and an arc chamber placed between the fixed contact and a conducting element, having a first end which is electrically connected to the second terminal and a second end which ends with the lower side. The arc chamber has multiple moulded conducting plates which are inserted between the fixed contact and the second end of the conducting element, and a main part having a second insulating housing which holds an element made of ferromagnetic material. The main part is placed adjacent to the multiple moulded conducting plates and defines the space for passage of the movable contact as it moves between the closed position and the open position.

EFFECT: making a switch which, with a relatively simple design, provides highly effective cutting of overload current owing to sufficient rate of opening and control of the electric arc.

11 cl, 4 dwg