3results about "Polarised relays" patented technology

An electromagnetic actuator comprises a first polar plate 101 having a first head portion 111, a second polar plate 102 spaced apart from the first plate and having a second head portion adjacent the first head portion, a permanent magnet 104, and an armature 103. The armature is movable between a closed position where it contacts the head portions and an open position where it does not contact the head portions. The plates each comprise an opening window 131 or cutout passing therethrough with an upper bridge 115 disposed on one side of the window and a lower bridge 116 disposed on an opposite side. The window of the first plate is aligned with the window of the second plate. The height H1 of each upper bridge and the height H2 of each lower bridge are dimensioned such that 0.5 x H1 ≤ H2 ≤ 5 x H1. At least part of the upper and lower bridges may be magnetically saturated by the permanent magnet when the armature is in the closed position. A coil 106 may be wound around the plates and pass through the window so that a current flowing through the coil reduces the magnetic holding force of the permanent magnet. Figures 1 and 4

A bi-stable contactor assembly 100 which includes one or more fixed contacts 102, 104; a moveable contact 106; an actuator; a solenoid 120 configured to induce a first magnetic field that actuates movement of a plunger 108 within a plunger tube 110 to change the position of the moveable contact 106; and a permanent magnet 150 located outside of the arc chamber 152 and magnetically coupled to the plunger 108 through a top core 130 that defines an end of the plunger tube 110. The magnet 50 generates a second magnetic field that, together with the top core 130 and the plunger 108, forms a latching magnetic circuit configured to hold the plunger 108 in a position corresponding to the closed state in the absence of current in the coil. The latching magnetic circuit is arranged in parallel with a drive magnetic circuit that includes the coil and the plunger.

An electric switching relay (1) is disclosed, comprising a contact carrier (5), which is rotatably arranged in a housing or on a frame (2), and a drive piece (6, 6*), which is rotatably arranged therein, too, and which is connected to the contact carrier (5) by means of an elastically twistable connector (7). Powering an electromagnetic drive (8) of the switching relay (1) causes rotation of the drive piece (6, 6*) and in turn of the contact carrier (5) thereby causing closing or opening of switching contacts (3a, 3b, 9a, 9b). The connector (7) is elastically twisted and biased, forcing the contact carrier (5) in a rotational forward direction relative to the drive piece (6, 6*) in a state, in which the switching contacts (3a, 3b, 9a, 9b) are displaced. Moreover, a hybrid circuit breaker (20) is disclosed, the electro-mechanical bypass switch (21) of which is embodied as a switching relay (1) of the proposed kind.