Abstract:
A switching device comprising a frame (2), in which an actuator (6) adapted to rotate a main shaft of the switching device and rotatable around an axis (12) of rotation, and spring means are installed, the actuator (6) having a 0 position, an 1 position and a first dead point between the 0 position and the 1 position, the 1 position being located by a given angle (a6) in a first direction relative to the 0 position. The actuator (6) also has a testing position, the testing position being located by a predetermined angle (B6) in a second direction relative to the 0 position, said second direction being opposite relative to said first direction.
Abstract:
An auxiliary contact configuration for a switching device, the switching device comprising a frame part (2) and the auxiliary contact configuration comprising a first auxiliary contact position (5) provided in the frame part (2) and arranged to receive an auxiliary contact (8), and a movable auxiliary contact control device (10) comprising a first control element (11) arranged to control the auxiliary contact (8) installed in the first position (5). The auxiliary contact configuration comprises a second auxiliary contact position (6) provided near the first auxiliary contact position (5), and the auxiliary contact control device (10) comprises a second control element (12) arranged to control the auxiliary contact (8) installed in the second position (6) in a manner different from the manner in which the first control element (11) is arranged to control the auxiliary contact (8) installed in the first position (5).
Abstract:
The electrical switch comprises two fixed contacts and a rotatable knife contact having a rotational axis (Z1-Z1) and comprising at least one longitudinal pair of blades (410) flexibly connected to each other. The two fixed contacts as well as the blades in the rotatable knife contact are of a first electrically conductive material composition. The first and the second fixed contact comprises a first contact pin (240) and outer ends in the blades in the rotatable knife contact comprises a second contact pin (440). The first contact pin and the second contact pin are of a second electrically material composition, which is different from the first material composition. The first contact pin and the second contact pin pass over each other during a switching event.
Abstract:
A stationary contact for a rotary switch,comprising a connection portion for connecting to a conductor. The stationary contact comprises a first portion (17) and a second portion (18), which project from the connection portion such they form substantially a letter Y and which first portion (17) and second portion (18) can both serve as a con- tact portion for connecting the stationary contact to a rotary contact and as a support portion for supporting the stationary contact (11) to a switch body (2, 3, 4).
Abstract:
The invention relates to an arrangement for attaching a switch (2) control shaft (1) to a switch (2) pipe shaft (3), where the control shaft (1) is mounted partly in the switch (2) pipe shaft (3) and tightened to the switch (2) pipe shaft (3) by a screw (4). The arrangement comprises a tightening piece (6). The screw (4) is arranged to act on the control shaft (1) through the tightening piece (6) so that when the screw (4) is turned, the tightening piece (6) is arranged to press the control shaft (1) against the pipe shaft (3) so that the control shaft (1) tightens fast between the tightening piece (6) and the pipe shaft (3).
Abstract:
A switching device which comprises: a body (2) which has a first side wall (21) and a first end wall (23), the first side wall (21) being perpendicular in relation to a longitudinal direction, and the first end wall (23) is substantially perpendicular to the first side wall (21); and a first fixed contact (41) comprising an inner section (412) and an outer section (414), the inner section (412) having a thickness dimension, the outer section (414) protrudes from the first side wall (21) in the longitudinal direction. The first fixed contact (41) comprises a test terminal (11) which is integral to the inner section (412) and protrudes from the inner section (412) in a lateral direction, which is perpendicular to the longitudinal direction and an end wall plane defined by the first end wall (23), the test terminal (11) having a substantially planar test terminal surface (115), and the test terminal (11) has a thickness dimension which is parallel to the thickness dimension of the inner section (412), the thickness dimension of the test terminal (11) is substantially smaller than the thickness dimension of the inner section (412), the test terminal (11) is accessible from outside the body (2) from the direction of the first end wall (23), and the test terminal (11) is adapted to be connected to a female connector.
Abstract:
A movable contact for a rotary switch, comprising a first contact and a second contact, which first contact and second contact are arranged at distance from each other for receiving a stationary contact (11) between the first contact and the second contact. The second contact (27) is a spring element configured to bend when the stationary contact (11) is placed between the first contact (26) and the second contact (27), and to cause a pressing force to the stationary contact (11) after the stationary contact (11) has been placed between the first contact (26) and the second contact (27).
Abstract:
A switching device module comprising a frame (2), the switching device module being adapted to be connected to another switching device module for providing a modular switching device. The frame (2) of the switching device module is provided with one or more wire troughs (8), each of which is adapted to receive at least one wire of an auxiliary circuit of said modular switching device.
Abstract:
The present publication discloses a fuse unit for holding a fuse (6) and comprising a body part (1) and contact means (2, 4) for coupling a fuse (6) mounted in the fuse unit to an external circuit. According to the invention, the fuse unit comprises a slidable fuse carrier (5) compressive-force-exerting means (5) and locking means (7, 8), adapted to operate so that the slidable fuse carrier can be withdrawn into a rear position against the compressive-force-exerting means (7, 8) and respectively can be released from this rear position and that, in its released position, the slidable fuse carrier (3) is adapted to cooperate with the compressive-force- exerting means (5) so as to establish a contact pressure between the fuse (5) and the contact means (2, 4). The fuse unit according to the invention features easy replacement of the fuse and facilitates manual fuse replacement operation without tools. Moreover, the springed contact loading of the slidable fuse carrier (3) assures a sufficiently high contact pressure.
Abstract:
The electrical switch (500) comprises a first and a second fixed contact (100, 200), and a movable knife contact (400) comprising at least one longitudinal pair of blades (410, 420) being flexibly connected to each other, whereby the blades form, in a switching event, contact with contact portions (120, 220) of the first and/or the second fixed contact. Opposite surfaces of the contact portions of the first and the second fixed contact comprise a roughened area (130, 230) and the inner surface of each blade comprises a protruded area (430) or opposite surfaces of the contact portions of the first and the second fixed contact comprise a protruded area (130, 230) and the inner surface of each blade comprises a roughened area.