Abstract: A power unit in a motor control center comprises an extendable/retractable carriage assembly and a power connection configurable to prevent an operator from accidentally energizing the power unit. A carriage follower coupled to the carriage assembly and in contact with a rotatable linkage may rotate the rotatable linkage to position an operator handle blocking surface. In a blocking position, the blocking surface prevents rotation of an operator handle to an operator handle position associated with energizing the power unit and in a nonblocking position, the blocking surface allows rotation of the operator handle to the operator handle position associated with energizing the power unit.

Abstract: A switchgear system may include a switchgear frame and a truck carrying a circuit breaker and supported for linear movement on the switchgear frame. A drive mechanism may rack in the truck and the circuit breaker is in electrical connection with primary circuit contacts, and may rack out the truck and the circuit breaker is electrically disconnected from the primary circuit contacts. As the drive mechanism racks in the circuit breaker, a shutter linkage moves a shutter opened, and as the drive mechanism racks out the circuit breaker, the shutter linkage moves the shutter closed over the primary circuit contacts.

Abstract: The invention relates to a method for producing a bloom-retarding component for chocolate and chocolate-like products, the method comprising the step of: Deodorizing a triglyceride composition, said triglyceride composition comprising at least 40% by weight of mono unsaturated symmetric triglycerides selected from the group consisting of POP, StOSt and POSt, where P equals palmityl, St equals stearyl and O equals oleyl, the deodorizing taking place for at least 60 minutes at a temperature of at least 220° C.

Abstract: The present disclosure provides a high-voltage isolating device and method. The high-voltage isolating device includes a power module and a shelf. The power module's back panel is provided with a first connecting portion, and the power module's front panel is provided with a first fastening member. The shelf includes a module slot for accommodating the power module. The module slot's rear end is provided with a second connecting portion, and the module slot's front end is provided with a second fastening member. Wherein in a first status, the first connecting portion is matched and connected with the second connecting portion, and the first fastening member is away from the second fastening member, and in a second status, the first connecting portion is disconnected from the second connecting portion, and the first fastening member and the second fastening member are matched and connected together by a padlock.

Abstract: Disclosed herein is an interlocking mechanism interlocked with a control power of a circuit breaker. The mechanism includes a control power plug movably installed in a switchgear box, a control power connector detachably coupled to the control power plug, a link connected to the control power connector, a plug interlock assembly connected to and interlocked with the link, and a position switch assembly positioned to face and interlocked with the plug interlock assembly.

Abstract: The present disclosure relates an interlock device for preventing insertion or withdrawal of a circuit breaker into or from a switch board having an ON button and an OFF button and including a switch board body provided with a housing and a rail having an interruption hole formed on one side surface thereof, a carriage movable back and forth along the rail of the switch board body, and the circuit breaker including a main body installed on the carriage and inserted into or withdrawn from the switch board body, the interlock device comprising an interlock rod protruding toward one side to set or release a pressed state, wherein the interlock rod is set in or released from the pressed state and inserted into or disengaged from the interruption hole when the main body is put in or tripped.

Abstract: The present disclosure relates a terminal assembly for a vacuum contactor switch which is connected to a terminal of a cradle with electricity applicability to protect a power system by breaking circuits in the event of a dangerous situation such as a short circuit or an overcurrent. The terminal assembly includes a body portion, a connecting member, a contactor and a bush. The body portion is inserted into a terminal hole formed in the terminal of the cradle and provided with first fastening holes formed in opposite side surface thereof. The contactor is connected to one end of the body portion through a connecting member. The bush has a pair of pieces disposed to surround a periphery of the body portion with both ends of one of the pieces facing both ends of the other piece.

Abstract: A retrofitting device for medium voltage panels which comprises a plurality of first and second horizontal CB contacts aligned in a first and second horizontal plane, a plurality of first and second vertical SWG contacts aligned in a first and second vertical plane, a first bar assembly comprising first connection elements for connecting each of said first horizontal CB contacts with a corresponding first vertical SWG contact, a second bar assembly comprising second connection elements for connecting each of said second horizontal CB contacts with a corresponding second vertical SWG contact, said first connection elements comprising a first portion and a second portion linked to each other and free to change the angular position with respect to each other in a vertical plane when in an unlocked condition, said second connection elements comprising a third portion and a fourth portion linked to each other and free to change the angular position with respect to each other in a vertical plane when in an unlocked

Abstract: The present invention relates to a connecting device for control terminals in a withdrawable type circuit breaker, and more particularly, a connecting device for control terminals in a withdrawable type circuit breaker, capable of automatically connecting or separating control power source terminals for controlling the circuit breaker upon pulling out or inserting a breaker main body.

Abstract: A circuit breaker arrangement is disclosed. It comprises a cart (1) on which slides a circuit breaker. A lead screw (14) drives the circuit breaker along a linear path by moving a drive block (15), an upper protuberance (211) of which engages the circuit breaker. The arrangement provides for an automatic uncoupling of the circuit breaker at an end position of the drive block (15), where a handle inserted into a hole (24) may turn an end of the lead screw and rock the drive block with a meshing mechanism (43) so that the protuberance (211) escapes the circuit breaker. It is therefore very easy to mount, dismount or replace the circuit breaker. A similar advantage based on unlatching an interlock may be obtained for dismounting the electrical motor (12) that normally drives the lead screw (14). The invention can well take place in the medium voltage industry.

Abstract: A lead screw operated drawout mechanism for an electrical system is disclosed. The lead screw operated drawout mechanism includes a lead screw, a nut, a drive shaft and a connecting mechanism. The lead screw is supported on a support frame in a way such that the lead screw rotates with respect to the support frame. The nut is disposed on the lead screw, wherein rotary motion of the lead screw facilitates linear motion of the nut on the lead screw. The drive shaft is rigidly disposed on the nut and configures linear motion along with the nut. The connecting mechanism is functionally connected to the drive shaft and the electrical system for facilitating activation and de-activation of the electrical system.

Abstract: Withdrawable contactor trucks for a circuit breaker have a cradle with a motorized drive system comprising an electric motor in the cradle. The motorized drive system is configured to move the contactor truck in a controlled path between a withdrawn position and a levering-in position in a switchgear compartment.

Abstract: A switchgear housing includes a busbar portion having a busbar enclosure. A first circuit breaker portion is coupled to the busbar portion. The first circuit breaker portion includes a first circuit breaker enclosure. A second circuit breaker portion includes a second circuit breaker enclosure. A first pressure relief member is arranged in the busbar portion. The first pressure relief member is configured and disposed to guide gases associated with an arcing event from the busbar portion upward through the busbar portion.

Abstract: A pole part of a circuit-breaker arrangement having an insulation housing for accommodating a vacuum interrupter insert containing a pair of corresponding electrical switching contacts, wherein a fixed upper electrical contact is connected to an upper electrical terminal molded in the insulation housing and a movable lower electrical contact is connected to a lower electrical terminal of the insulation housing via an electrical conductor which is operated by an adjacent pushrod. The lower electrical terminal is connected to a ring shaped heat transfer shield arranged along the inner wall or at least partly inside the wall of the insulation housing surrounding the pushrod and/or the distal end of the movable lower electrical contact.

Abstract: Disclosed is a withdrawable-type circuit breaker, including a cradle, a main body disposed to be inserted into and withdrawn from the cradle by a transfer device, and an interlock device for restricting a withdrawal of the main body when the circuit breaker is in a connected state, wherein the interlock device includes a support part vertically disposed on a bottom surface of the main body, an interlock lever, having a sliding hole at one end thereof and a power transmission part at another end thereof, hinge-coupled at its medium portion to one end of the support part, and an interlock pin having one end inserted into and coupled to the sliding hole and another end up and downwardly movable and insertable to an interlock pin hole formed in a bottom surface of the cradle.

Abstract: A removable contactor drawer including a transitional chamber receivable in a fixed casing. The transitional chamber including electrical components for an electrical feeder circuit. The fixed casing being designed to be mounted and used within a power distribution center and has input connectors for the incoming electrical power. Source power may be channeled through the electrical components via the fixed casing and delivered to a power outlet on a front face of the transitional chamber. The transitional chamber may optionally contain equipment to monitor and report operational faults within the contactor drawer. A front-mounted motor drive allows a remotely located operator to perform removal of the transitional chamber while under power, thus providing protection against the danger of arc flash.

Abstract: Withdrawable contactor trucks for a circuit breaker have a cradle with a motorized drive system comprising an electric motor in the cradle. The motorized drive system is configured to move the contactor truck in a controlled path between a withdrawn position and a levering-in position in a switchgear compartment.

Abstract: Roll on floor (ROF) circuit breakers include a plurality of support wheels configured to contact a support surface as the ROF circuit breaker is moved between locations. The support wheels have a rocker configuration whereby weight of the ROF circuit breaker is transferred between different sets of the wheels during movement to thereby facilitate ease of movement.

Abstract: A retrofit assembly and method of retrofitting a circuit breaker in a switchgear are described. The retrofit assembly can includes one or more adjustable elements for fitting a circuit breaker into a switchgear panel of the switchgear. The adjustable elements can include a plurality of adjustable modular female tulip contacts to receive a corresponding plurality of male contacts in a panel of the switchgear, each female tulip contact being flexible for a plurality of diameters, a plurality of modular phase adjustment contact arms to provide phase alignment between the poles of the circuit breaker, and/or an adjustable truck for placing the circuit breaker in contact with a rack for the circuit breaker in the switchgear.

Abstract: A truck (12?) for mounting a circuit breaker (13) in a switchgear frame (14?) includes wheels (16), a racking screw (20), a nut (22) threaded with the racking screw. The nut floats linearly with respect to the truck. A spring (23) is provided between a portion of the truck and the nut such that during movement of the truck into the frame, rotation of the racking screw causes linear movement of the nut, with the nut pushing against the spring, with the spring pushing the truck to move the truck linearly. Locking structure is coupled with the such that when the truck is stopped and the racking screw continues to rotate, the nut will move to compress the spring, causing the locking structure to move from an unlocked position, disengaged with the frame, to a locked position, engaged with the frame.

Abstract: A position switch and a circuit breaker having a position switch are provided. Contact plates, each having an elastically variable height, may be provided between switch blocks and switch levers. A testing contact plate and a running contact plate may compensate for inferior dimensioning of the switch blocks and the switch levers. Such a configuration may allow a position of a breaker body to be quickly and accurately displayed and, further, may prevent damage of the position switch provided at the breaker body. Furthermore, such a configuration may prevent any connection inferiority between a terminal of the breaker body and a terminal of a cradle.

Abstract: Disclosed is a device for preventing withdrawing and inserting of a circuit breaker. The device for preventing withdrawing and inserting of a circuit breaker include: a lead screw is coupled between a carriage and a girder assembly and rotated by an external force to allow a breaker body to be closed or released while the carriage is moved with respect to a cradle, and a braking unit preventing the lead screw for operating when the girder assembly is released from the cradle. In an unstable state in which the girder assembly is not coupled to the cradle, a withdrawal handle is prevented from being inserted into the girder assembly. Therefore, an abnormal withdrawing operation can be prevented, and thus, various safety accidents, a contact resistance and temperature rise, damage to a device due to electrical breakdown can be prevented.

Abstract: Electric switchgear comprising a casing having at least one compartment provided with a door, a plurality of electrical conductors suitable to be connected to a load, a multi-phase switching device which is mounted on a truck movable inside the compartment between a connected position wherein each phase of the switching device is electrically connected to a corresponding electrical conductor and a withdrawn position wherein each phase of the switching device is electrically separated from the corresponding electrical conductor, and an earthing switch comprising a plurality of contacts for connecting to earth the plurality of electrical conductors. The earthing switch is actuated to move between a first position wherein each contact is electrically connected to a corresponding electrical conductor and a second position wherein each contact is electrically separated from the corresponding electrical conductor by the movement of the truck between the connected position and the withdrawn position.

Abstract: A retrofit assembly and method of retrofitting a circuit breaker in a switchgear are described. The retrofit assembly can includes one or more adjustable elements for fitting a circuit breaker into a switchgear panel of the switchgear. The adjustable elements can include a plurality of adjustable modular female tulip contacts to receive a corresponding plurality of male contacts in a panel of the switchgear, each female tulip contact being flexible for a plurality of diameters, a plurality of modular phase adjustment contact arms to provide phase alignment between the poles of the circuit breaker, and/or an adjustable truck for placing the circuit breaker in contact with a rack for the circuit breaker in the switchgear.

Abstract: A switching device, in particular an automatic switch, a disconnecting switch or a contactor, installable according to different operating configurations and preferably for use in low voltage systems. The device comprises a case containing at least a pair of contacts, one or more accessory devices for controlling and/or setting the operation of the switching device and user interface means, capable of performing output and/or input functions relative to the accessory devices. These interface means comprise at least a display which shows information relative to the output and/or input functions according to a viewing direction. The switching device also comprises means to select the viewing direction which are operatively connected to the display. These selection means allow selection of the viewing direction on the display as a function of the installation configuration of the switching device.

Abstract: Electric switchgear comprising a casing having at least one compartment provided with a door, a plurality of electrical conductors suitable to be connected to a load, a multi-phase switching device which is mounted on a truck movable inside the compartment between a connected position wherein each phase of the switching device is electrically connected to a corresponding electrical conductor and a withdrawn position wherein each phase of the switching device is electrically separated from the corresponding electrical conductor, and an earthing switch comprising a plurality of contacts for connecting to earth the plurality of electrical conductors. The earthing switch is actuated to move between a first position wherein each contact is electrically connected to a corresponding electrical conductor and a second position wherein each contact is electrically separated from the corresponding electrical conductor by the movement of the truck between the connected position and the withdrawn position.

Abstract: An adjustable mounting assembly for a power circuit breaker includes a frame having a first sidewall disposed opposite a first side of the housing of the power circuit breaker and a second sidewall disposed opposite the second side of the housing. At least one moveable block is disposed between the first and second sidewalls of the frame and the corresponding first and second sides of the housing. An adjustment mechanism, such as a jackscrew coupled to the moveable block, adjusts in order to move the block into engagement with the corresponding sides of the housing. A fastening mechanism, such as a lock screw, secures the moveable block and the frame with respect to the housing. The adjustable mounting assembly securely mounts the frame and the power circuit breaker within a switchgear enclosure in order to resist damage potentially caused by an impact force sustained thereby.

Abstract: A stop device for an electrical device cell includes a generally flat, rectangular stop member and a generally flat, elongated permissive member. The stop member is, preferably, part of a stop member assembly that includes a biasing device. The cell includes a pair of rails upon which a drawout electrical device is movably disposed. The stop member is disposed adjacent to at least one housing assembly rail and is structured to move between a first, extended position, wherein the stop member engages the drawout electrical device and prevents the drawout electrical device from moving from the first, installed position to the second, drawn out position, and a second, withdrawn position, wherein the stop member does not engage the drawout electrical device and the drawout electrical device may move from the first, installed position to the second, drawn out position.

Abstract: A protective unit may prevent contact with conductive contacts in a withdrawable rack of a switching device. This may include one displaceable protective plate and lever arrangement for operating the protective plate. The lever arrangement has two levers that are interconnected in an articulated manner, of which a first lever can be operated by way of the switching device and the second lever is coupled to the mobile protective plate. A linking joint of the two levers acts simultaneously as the pivot bearing of the first lever and the first lever can be pivoted out of the displacement path of the switching device into an end position by way of a slide block that runs in a graded manner in the pivoting direction of the first lever.

Abstract: An interlock assembly for a circuit breaker housing assembly and a circuit breaker extraction device wherein the interlock assembly has a first and second component. The first component is coupled to a circuit breaker housing assembly and the second component is coupled to a circuit breaker extraction device. The first component includes a rail obstruction assembly that is structured to move between a first position, wherein the movable rail obstruction element blocks a circuit breaker wheel from traveling over a circuit breaker housing assembly rail, and a second position, wherein the movable rail obstruction element is spaced from the circuit breaker housing assembly rail so that a wheel may travel over the circuit breaker housing assembly rail. The second component is structured to engage the first component when the circuit breaker extraction device is brought adjacent to the circuit breaker housing assembly and to move the movable rail obstruction element from the first position to the second position.

Abstract: A latch kit comprising a member with at least one hook end, a tension member, and a hook plate. The hook plate is connected to the member by a tension member. The kit is intended to be used in conjunction with an industrial circuit breaker which is secured in a cell by a catch plate. When the hook plate is attached to the circuit breaker, the hook end can be used to support the circuit breaker's catch plate handle in the open position so that the circuit breaker can be extracted from the cell.