摘要:
An auxiliary switch tray is provided for an electrical switching apparatus, such as a circuit breaker. The circuit breaker includes a housing, an actuating mechanism, and a plurality of auxiliary switches. The housing has a mounting mechanism. The auxiliary switch tray includes a module having first and second sides, and a plurality of mounts disposed on the first side. At least a plurality of the mounts is structured to receive a corresponding one of the auxiliary switches. A base is disposed on the second side of the module and is coupled to the mounting mechanism in order to install the auxiliary switches in a predetermined position with respect to the actuating mechanism of the circuit breaker. The module, the mounts, and the base comprise one single-piece molded member. At least a plurality of the mounts are molded compartments of the single-piece molded member.
摘要:
An auxiliary switch tray is provided for an electrical switching apparatus, such as a circuit breaker. The circuit breaker includes a housing, an actuating mechanism, and a plurality of auxiliary switches. The housing has a mounting mechanism. The auxiliary switch tray includes a module having first and second sides, and a plurality of mounts disposed on the first side. At least a plurality of the mounts is structured to receive a corresponding one of the auxiliary switches. A base is disposed on the second side of the module and is coupled to the mounting mechanism in order to install the auxiliary switches in a predetermined position with respect to the actuating mechanism of the circuit breaker. The module, the mounts, and the base comprise one single-piece molded member. At least a plurality of the mounts are molded compartments of the single-piece molded member.
摘要:
A vented case is provided for an electrical switching apparatus including an arc chute structured to attract and dissipate an arc. The arc produces an ionized gas. The vented case includes at least one housing member comprising an interior, an exterior, a first end, a second end disposed generally opposite and distal from the first end, and an intermediate portion extending between the first end and the second end. The vented case also includes at least one vent structured to discharge the ionized gas from the interior of such housing member to the exterior of such housing member. Such vent includes a plurality of venting passages, each extending from proximate the arc chute within the interior to the exterior. An electrical switching apparatus is also disclosed.
摘要:
A vented case is provided for an electrical switching apparatus including an arc chute structured to attract and dissipate an arc. The arc produces an ionized gas. The vented case includes at least one housing member comprising an interior, an exterior, a first end, a second end disposed generally opposite and distal from the first end, and an intermediate portion extending between the first end and the second end. The vented case also includes at least one vent structured to discharge the ionized gas from the interior of such housing member to the exterior of such housing member. Such vent includes a plurality of venting passages, each extending from proximate the arc chute within the interior to the exterior. An electrical switching apparatus is also disclosed.
摘要:
An auxiliary switch sub-assembly is provided for a telecommunication system circuit breaker including a housing having an opening, separable contacts inside the housing, and an operating mechanism operating the separable contacts between open and closed positions. The operating mechanism comprises an operating handle operable among a first position corresponding to the separable contacts being open and a second position corresponding to the separable contacts being closed. The operating handle has a first end protruding from the opening of the housing, and a second end. The auxiliary switch sub-assembly includes an auxiliary switch including an actuator, and a mount attaching the auxiliary switch to the operating mechanism of the circuit breaker within the housing thereof. The actuator is mechanically actuated by a portion of the second end of the operating handle. An electrical switching apparatus employing an auxiliary switch sub-assembly is also disclosed.
摘要:
A circuit breaker includes separable contacts, a trip mechanism having an armature mechanism responsive to selected conditions of current flowing through the contacts, and an operating mechanism for opening and closing the contacts. The operating mechanism includes an open position, a closed position, a tripped open position, a lock, a first link and a second link having a base and a pair of legs. The lock is pivotally mounted to and substantially between the legs of the second link. The first link is pivotally mounted to the second link. The first link and the second link have an unbroken state in the closed position and a broken state in the tripped open position. The lock maintains the unbroken state in the closed position and responds to the armature mechanism to release the first link and the second link to the broken state in the tripped open position.
摘要:
A circuit interrupter including a housing, separable main contacts disposed in the housing and rotatable between a contact open position and a contact closed position, and an operating mechanism disposed in the housing and interconnected with the contacts for rotating the contacts alternatively between the contact open position and the contact closed position. The operating mechanism includes a handle moveable by an operator between handle open and handle closed positions normally corresponding to and resulting in the contact open position and the contact closed position, with the handle including a protrusion. The operating mechanism further includes a crossbar assembly for rotating with the contacts as the contacts rotate between the contact open position and the contact closed position. The crossbar assembly includes a stop member that is positioned to abut against the protrusion as the handle is moved towards the handle open position when the contacts and the crossbar assembly remain in the contact closed position. The operating mechanism also includes a sideplate assembly having stops that prevent disengagement of the handle.
摘要:
A levering assembly for an electrical switching apparatus, such as a circuit breaker, which is removably disposed in a cassette, includes a mounting member coupled to the housing of the circuit breaker. A drive assembly is coupled to the mounting member and cooperates with the cassette. A powered actuator, such as an electric motor, is disposed on the mounting member and actuates the drive assembly to move the circuit breaker with respect to the cassette. The powered actuator is disposed within the housing of the circuit breaker. The mounting member, drive assembly and powered actuator form a self-contained sub-assembly, which is substantially disposed behind the circuit breaker cover. The levering assembly is operable from a remote location to automatically move the circuit breaker with respect to the cassette, to provide enhanced safety among other benefits.
摘要:
A circuit breaker includes a case, separable contacts having a fixed contact and a movable contact, and an operating mechanism for opening and closing the separable contacts. The operating mechanism includes a closed position, an open position, an operating handle for moving the operating mechanism between the open and closed positions, a movable contact arm carrying the movable contact, a linkage having a first end and a second end, and a snap lever. The second end of the linkage is pivotally mounted to the movable contact arm. The snap lever holds the linkage in the open position of the operating mechanism and releases the linkage as the operating handle moves from the open position toward the closed position of the operating mechanism, in order to snap close the separable contacts.
摘要:
A circuit breaker includes a housing, line and load terminals, first and second circuit breaker mechanisms, an operating handle having on and off positions, and first and second links from the operating handle to the respective first and second operating mechanisms. Each of the circuit breaker mechanisms includes a set of separable contacts in series with the other separable contacts between the line and load terminals, an operating mechanism for moving the corresponding separable contacts between open and closed positions, and a trip mechanism cooperating with the corresponding operating mechanism for moving the corresponding separable contacts from the closed to the open position thereof. The first and second links engage the first and second operating mechanisms to move the first and second separable contacts, respectively, between the corresponding closed and open positions thereof responsive to the on and off positions, respectively, of the operating handle.