Abstract:
A safety relay has a guided contact set (16) and a monostable drive with a H-armature (6). The individual contacts of the set of contacts (16) are located in separate chambers and are actuated by a common actuator (20). In order to miniaturise the relay while having a low power consumption, a mechanically symmetrical H armature (6) with an asymmetrical magnetic effect is provided to ensure the monostable drive. The longitudinal axis of the H-armature (6) is approximately parallel to the longitudinal axis of the driving coil and the axis of rotation of the H-armature is perpendicular to the longitudinal axis of the driving coil. The actuator (20) is actuated by an actuating plate (49) which prolongs the H armature.
Abstract:
A switching device (Figures 5A and 5B) employs as actuator a bistable solenoid which includes a plunger (16) movable within a winding (12) between end positions in each of which it is held by permanent magnets (18, 20). The plunger (16) of the actuator is engageable with an insulated lever (86) which in turn actuates a contact blade (76) via a spring (108). The lever may be cranked, and may have an extension (90) outside of the casing (70) to enable the device to be manually operated or to provide a visual indication of the state of the switch. Other types of solenoid may be employed as the actuator.
Abstract:
The relay, intended to switch high currents/powers, is comprised of a coil body (2) with a core (5) and an associated yoke (4) acting on an armature (9) pivotingly arranged within the relay casing, which actuates the contacts according to its position. In order to switch high currents/powers by means of electronic control circuits, the relay is provided with a polarised driving system having a permanent magnet (8) and a switching system having a double contact cut-off.
Abstract:
An armature (10; 30; 50) for an electromagnetic actuator, the armature comprising an armature body (12; 32; 52), at least one electrically conductive member (14; 34; 54, 64) configured for cooperation with a magnetic field generator (110; 130; 150, 151) of an electromagnetic actuator, and a connection end(26; 46; 66) configured for connection of the armature to an apparatus operable by an electromagnetic actuator. The armature body (12; 32; 52) also comprises a cellular structure (13; 33; 53). The armature may form part of an electromagnetic actuator (100), which in turn may be a component in a switch device (200). The armature may be manufactured by a method comprising an additive manufacturing process step.
Abstract:
A contact system includes at least one first contact (4), at least one second contact (1), and at least one movable contact (3). A coil (12) is provided which, when energized generates a force. A magnet (9) is also provided, the magnet (9) having a magnetic force. The forces of the coil (12) and magnet (9) attract the at least one movable contact (3) to the at least one first contact (4). A return spring (8) having a spring force cooperates with the at least one movable contact (3) to return the at least one movable contact (3) to the at least one second contact (1) when the coil (12) is not energized. The sum of the forces applied by the coil (12) and the magnet (9) are sufficient to overcome the spring force of the return spring (8) to provide a balanced force to both the at least one second contact (1) and the at least one first contact (4).
Abstract:
A magnetic actuator with a movable part and a non-movable part is provided. The movable part comprises two ferromagnetic elements which are arranged such that a part of the elements is close to the non-movable part in order to reduce a magnetic force for acting on the movable part an perform a switching operation of the magnetic actuator while moving the movable part towards the non-movable part. As the distance between the movable part and the non-movable part is reduced compared to actuators with parallel plates, it may be possible to reduce a current through a coil of the non- movable part for generating the magnetic force for acting on the movable part so that a switching operation is performed. In order to not reduce the working stroke of the magnetic actuator, the ferromagnetic elements of the movable part are able to rotate around a rotational axis when being attracted towards the non-movable part.
Abstract:
A magnetic actuator 10 for a circuit breaker arrangement comprises position lockers 34a, 34b for locking a coil 14 in grooves 26a, 26b of the core 12 of the magnetic actuator 10.The position lockers 34a, 34b have a locking part 38 protruding away from the core 12 and over the coil 14 remote from the grooves 26a, 26b.