A switching appliance that includes a first housing and a second housing on one side of the first housing to accommodate an auxiliary contact mechanism, the first housing having a lower housing, and an upper housing to accommodate a main contact mechanism; the auxiliary contact mechanism having a linkage member connected to the main contact mechanism; a mounting leg that extends to the side surface of the side wall of the lower housing is arranged at the bottom of the second housing; a first clamping groove in the side surface, facing the lower housing, of the mounting leg, and a second clamping groove opposite the first clamping groove formed in the side wall of the lower housing; the mounting leg is connected to the side wall of the lower housing through a connector, which fixes the second housing and the first housing.

Provided herein are methods for an improved bi-stable relay. In some embodiments, a method may include providing a core assembly within a housing, the core assembly comprising a plunger extending through a coil support structure. The method may further include winding a first coil and a second coil about a central section of the coil support structure, providing a first magnet and a first ferromagnetic plate at a first end of the coil support structure, and providing a second magnet and a second ferromagnetic plate at a second end of the coil support structure. In some embodiments, the method may further include activating the first coil or the second coil to move the plunger between a first position and a second position, wherein in the first position a circuit formed by a set of contacts is closed, and wherein in the second position the circuit is open.

Provided herein are methods for an improved bi-stable relay. In some embodiments, a method may include providing a core assembly within a housing, the core assembly comprising a plunger extending through a coil support structure. The method may further include winding a first coil and a second coil about a central section of the coil support structure, providing a first magnet and a first ferromagnetic plate at a first end of the coil support structure, and providing a second magnet and a second ferromagnetic plate at a second end of the coil support structure. In some embodiments, the method may further include activating the first coil or the second coil to move the plunger between a first position and a second position, wherein in the first position a circuit formed by a set of contacts is closed, and wherein in the second position the circuit is open.

The electromagnetic relay includes a contact unit, an electromagnet, an armature unit, and a base. The contact unit includes a fixed contact and a movable spring including a movable contact. The armature unit is movable in accordance with excitation of the electromagnet to allow the movable contact to move between a closed position in contact with the fixed contact and an open position away from the fixed contact. The base holds the contact unit and the electromagnet on a certain surface side. The movable contact is placed between the base and the fixed contact in an arrangement direction in which the base and the electromagnet are arranged. The armature unit includes a press part which causes movement of the movable contact by applying a pressing force to a certain surface facing the fixed contact, of the movable spring.

The electromagnetic relay includes a contact unit, an electromagnet, an armature unit, and a base. The contact unit includes a fixed contact and a movable spring including a movable contact. The armature unit is movable in accordance with excitation of the electromagnet to allow the movable contact to move between a closed position in contact with the fixed contact and an open position away from the fixed contact. The base holds the contact unit and the electromagnet on a certain surface side. The movable contact is placed between the base and the fixed contact in an arrangement direction in which the base and the electromagnet are arranged. The armature unit includes a press part which causes movement of the movable contact by applying a pressing force to a certain surface facing the fixed contact, of the movable spring.

A contactor (1) comprising: one or more electric poles (3); for each electric pole, a fixed contact (31) and a corresponding movable contact (32), the one or more movable contacts (32) of said contactor being reversibly movable, along corresponding displacement axes (33) mutually parallel and lying on a common displacement plane (34), between a first position (A), at which said movable contacts are decoupled from the corresponding fixed contacts, and a second position (B), at which said movable contacts are coupled with the corresponding fixed contacts; a movable armature (7) reversibly movable, along a corresponding displacement direction parallel to the displacement axes (33) of said movable contacts, between a third position (C) and a fourth position (D); for each electric pole, a first plunger (8) coupled with said movable armature (7) and with a corresponding movable contact (32), each first plunger extending along a corresponding main longitudinal axis parallel or coinciding with the displacement axis (33) of a corresponding movable contact (32); an electromagnetic actuator (4) comprising a magnetic yoke (41, 42) having a fixed yoke member (41) and a movable yoke member (42), said movable yoke member being reversibly movable, along a corresponding displacement direction parallel to the displacement axes (33) of said movable contacts (32), between a fifth position (E), at which it is decoupled from said fixed yoke member, and a sixth position (F), at which it is coupled with said fixed yoke member, said electromagnetic actuator further comprising a coil (44) wound around said fixed yoke member (41) and adapted to be fed by a coil current (IC) to make said fixed yoke member (41) to magnetically interact with said movable yoke member (42) and generate a force to move said movable yoke member from said fifth position (E) to said sixth position (F) or maintain said movable yoke member in said sixth position (F); one or more opening springs (6) coupled with said fixed yoke member (41) and said movable yoke member (42), said opening springs being adapted to provide a force to move said movable yoke member from said sixth position (F) to said fifth position (E); one or more second plungers (5) coupled with said movable yoke member (42) and said movable armature (7), each second plunger extending along a corresponding main longitudinal axis parallel with the displacement axes (33) of said movable contacts (32).

A contactor (1) comprising: one or more electric poles (3); for each electric pole, a fixed contact (31) and a corresponding movable contact (32), the one or more movable contacts (32) of said contactor being reversibly movable, along corresponding displacement axes (33) mutually parallel and lying on a common displacement plane (34), between a first position (A), at which said movable contacts are decoupled from the corresponding fixed contacts, and a second position (B), at which said movable contacts are coupled with the corresponding fixed contacts; a movable armature (7) reversibly movable, along a corresponding displacement direction parallel to the displacement axes (33) of said movable contacts, between a third position (C) and a fourth position (D); for each electric pole, a first plunger (8) coupled with said movable armature (7) and with a corresponding movable contact (32), each first plunger extending along a corresponding main longitudinal axis parallel or coinciding with the displacement axis (33) of a corresponding movable contact (32); an electromagnetic actuator (4) comprising a magnetic yoke (41, 42) having a fixed yoke member (41) and a movable yoke member (42), said movable yoke member being reversibly movable, along a corresponding displacement direction parallel to the displacement axes (33) of said movable contacts (32), between a fifth position (E), at which it is decoupled from said fixed yoke member, and a sixth position (F), at which it is coupled with said fixed yoke member, said electromagnetic actuator further comprising a coil (44) wound around said fixed yoke member (41) and adapted to be fed by a coil current (IC) to make said fixed yoke member (41) to magnetically interact with said movable yoke member (42) and generate a force to move said movable yoke member from said fifth position (E) to said sixth position (F) or maintain said movable yoke member in said sixth position (F); one or more opening springs (6) coupled with said fixed yoke member (41) and said movable yoke member (42), said opening springs being adapted to provide a force to move said movable yoke member from said sixth position (F) to said fifth position (E); one or more second plungers (5) coupled with said movable yoke member (42) and said movable armature (7), each second plunger extending along a corresponding main longitudinal axis parallel with the displacement axes (33) of said movable contacts (32).

The contact device includes a main contact mechanism that includes a pair of main fixed contacts and a main movable contact elastically supported by a movable shaft and disposed to be contactable with and separable from the pair of main fixed contacts, an auxiliary contact mechanism that includes a pair of auxiliary fixed contacts and auxiliary movable contacts disposed in an auxiliary contact holding member connected to the movable shaft so as to be contactable with and separable from the pair of auxiliary fixed contacts, and a contact housing portion that houses the main contact mechanism and the auxiliary contact mechanism. The movable shaft has a main contact support portion supporting the main movable contact and an auxiliary contact support portion supporting the auxiliary contact holding member. The main contact support portion and the auxiliary contact support portion are connected to each other via the auxiliary contact holding member.

The contact device includes a main contact mechanism that includes a pair of main fixed contacts and a main movable contact elastically supported by a movable shaft and disposed to be contactable with and separable from the pair of main fixed contacts, an auxiliary contact mechanism that includes a pair of auxiliary fixed contacts and auxiliary movable contacts disposed in an auxiliary contact holding member connected to the movable shaft so as to be contactable with and separable from the pair of auxiliary fixed contacts, and a contact housing portion that houses the main contact mechanism and the auxiliary contact mechanism. The movable shaft has a main contact support portion supporting the main movable contact and an auxiliary contact support portion supporting the auxiliary contact holding member. The main contact support portion and the auxiliary contact support portion are connected to each other via the auxiliary contact holding member.

A movable member is configured to switch, by rotation, between a first state and a second state. In the first state, the movable member presses a plurality of first movable contact pieces to bring first contacts into contact with first substrate side contact points. When the movable member is in the second state, the first contacts are separated from the first substrate side contact points. A coil block includes a coil and causes the movable member to rotate by electromagnetic force generated by energization of the coil. A rotation axis of the movable member is parallel to an axis of the coil. The plurality of first substrate side contact points is arranged side by side in an axial direction of the coil on a first base substrate. The plurality of first movable contact pieces is arranged side by side in the axial direction.