摘要:
A low-profile electronic circuit breaker includes first and second electrical branches coupled to respective first and second load terminals. The electronic circuit breaker also includes an electronic processing circuit configured to monitor an electrical condition in the first and second electrical branches. The electronic circuit breaker is packaged in a housing sized to occupy a standard single-pole breaker panelboard location. In some embodiments, the electronic circuit breaker has no load neutral terminals associated with the first and second load terminals. Methods of assembling an electronic circuit breaker are provided, as are other system and method aspects.
摘要:
A hybrid current switching device comprises two terminals for electrical connection with an associated electrical circuit and a casing containing: - a main current switch (MS) comprising a first fixed contact and a corresponding first movable contact which are connected in series with and positioned between the two terminals; - a power switch device (PES) which is connected in parallel with the main current switch and can be switched between an on-state and an off-state; - a secondary current switch (IS) having a second fixed contact and a second movable contact, the secondary current switch being connected in series at least with the power switch device; - a movable-contacts holding shaft (4) on which the first and second movable contacts are mounted. The contacts-holding shaft is positioned inside the casing rotating around a rotation axis so as to move the movable contacts between a closed position where they are coupled with the corresponding fixed contacts and an open position where they are electrically separated there from; the first and second movable contacts are mounted on the rotating shaft with an angular offset relative to each other when being in the open position.
摘要:
A residual-current circuit breaker, characterized in that it includes at least one movable contact that acts on a fixed contact; the movable contact is connected to a first terminal and the fixed contact is connected to a second terminal; a test circuit has a contoured blade that is connected to the second terminal, a button acting on a spring, said button being accessed from the outside; when the button is pressed, the spring closes the test circuit, making contact with the contoured blade; the test circuit also has a test contact elastic plate and a resistor; the test contact elastic plate is coupled to the resistor and is in contact with the spring; the elastic plate is in contact with the movable contact when the movable contact is in the closed position, in contact with the fixed contact.
摘要:
Ce déclencheur (10) est propre à être connecté à un disjoncteur et comprend un premier bloc (12) et un deuxième bloc (14). Le premier bloc (12) comprend un premier boîtier (16) et un organe de déclenchement (20) du disjoncteur accessible depuis l'extérieur du premier boîtier (16). Le deuxième bloc (14) comprend un deuxième boîtier (26) et au moins un organe de détection (28) d'un défaut électrique. Chaque organe de détection (28) est disposé à l'intérieur du deuxième boîtier (26) et comporte au moins un élément mobile (56) qui comprend une extrémité de contact (62) propre à être déplacé en direction de l'organe de déclenchement (20), lorsqu'il détecte un défaut électrique. Le premier bloc (12) et le deuxième bloc (14) sont deux blocs distincts l'un de l'autre et le premier boîtier (16) et le deuxième boîtier (26) sont propres à être mécaniquement assemblés l'un à l'autre dans une configuration assemblée du déclencheur (10). Chaque extrémité de contact (62) est propre à coopérer mécaniquement avec l'organe de déclenchement (20), de manière à ce que l'organe de déclenchement (20) soit apte à déclencher le disjoncteur en configuration assemblée du déclencheur, lorsque l'organe de détection (28) correspondant détecte un défaut électrique.
摘要:
A latching mechanism (10) for activating a switch, a switch comprising a latching mechanism (10) described herein, and a method of unlatching a latching mechanism (10) are described. The latching mechanism (10) comprises a latch element (12), at least one linear actuator (11), and a first clamp element (13), wherein the latching mechanism (10) is configured to change between a latched state and an unlatched state. In the latched state the at least one linear actuator (11) is extended along a longitudinal axis (20) and presses the latch element (12) against the first clamp element (13) to thereby establish a frictional locking between the latch element (12) and the first clamp element (13). In the unlatched state the at least one linear actuator (11) is contracted along the longitudinal axis (20) thereby releasing the frictional locking between the latch element (12) and the first clamp element (13) to thereby allow a movement of the latch element (12) for activating the switch.
摘要:
An electrical switching apparatus (2;50) includes separable contacts (10), an operating mechanism (16) structured to open and close the separable contacts, and a trip mechanism (14) cooperating with the operating mechanism to trip open the separable contacts. The trip mechanism includes a trip latch (4), and an arc chamber (18) operatively associated with the separable contacts. The arc chamber includes a plurality of arc plates (20) and a barrier (22) disposed between the arc plates and the trip latch. The barrier has an opening (12;58) therein. A trip member (8) is disposed in or about the opening of the barrier of the arc chamber. During interruption of current flowing through the separable contacts, pressure arising from an arc (11) in the arc chamber pushes the trip member away from the barrier of the arc chamber to engage the trip latch and cause the trip mechanism to trip open the separable contacts.
摘要:
The present invention is related to an autotrip plunger (1) of a circuit breaker (20) for opening contacts of the circuit breaker (20) to install and uninstall the circuit breaker (20) from a current source, comprising a compression spring (2), wherein the autotrip plunger (1) comprises a first body section (3) and a second body section (4), the first body section (3) having a contact surface (5) for contacting a tripping element of the circuit breaker (20), the second body section (4) comprising an arbor shaft (6) for fitting in the compression spring (2), whereby at the free end (7) of the arbor shaft (6) the arbor shaft (6) comprises at least one radial protrusion (8, 9) for holding the compression spring (2). The invention is further related to a circuit breaker with such an autotrip plunger (1).
摘要:
The invention relates to a circuit breaker comprising a switch housing (3) and at least one contact for tapping a voltage on a primary conductor (3).