摘要:
An arc extinguishing chamber for an electrical switchgear device, notably a circuit breaker or a current limiting unit, comprises an almost tightly sealed case made of gas-producing insulating material to house separable contacts with electrodynamic repulsion. The movable contact, in the shape of a bridge, appreciably follows the internal configuration of the case playing the role of a piston arranged on both sides of a first compartment generating pressure due to the action of the arc, and a second compartment communicating with the first via a minimal clearance J. The pressure in the second compartment is lower than that in the first compartment. Magnetic circuits can be arranged to accelerate the movable contact to the open position.
摘要:
In order to take maximum advantage of the modularity provided by a multipole circuit breaker with double enclosure (100), a new architecture is proposed. The outer case (48) of the switchgear apparatus (100) is formed directly when assembly of the breaking device (600) is performed by juxtaposition and securing between single-pole breaking units (10), spacers (46) and side walls (50), trip device (7) and cover (64). The spacers (46) can thus be used for various functionalities, and in particular to modify the external aspect of the switchgear apparatus (100) or the nature of the trip device (7) in delayed manner.
摘要:
In order to take maximum advantage of the modularity provided by a multipole circuit breaker with double enclosure (100), a new architecture is proposed. The outer case (48) of the switchgear apparatus (100) is formed directly when assembly of the breaking device (600) is performed by juxtaposition and securing between single-pole breaking units (10), spacers (46) and side walls (50), trip device (7) and cover (64). The spacers (46) can thus be used for various functionalities, and in particular to modify the external aspect of the switchgear apparatus (100) or the nature of the trip device (7) in delayed manner.
摘要:
A molded case circuit breaker includes standard compartments each designed to accommodate a standard auxiliary indication or control unit. Each compartment is assigned to a predetermined function, the control device associated with this compartment being connected to the corresponding components of the circuit breaker supplying the information relating to this function. Customization of the circuit breaker can be performed by the distributor or fitter who fits a standard auxiliary unit in the compartment or compartments.
摘要:
A modular low voltage multipole circuit breaker, including a plurality of identical single-pole breaking units each including a parallelipipedic insulating box having two opposite parallel large side faces and two opposite parallel small side faces, two terminals located at respective opposite parallel small side faces, a stationary contact electrically connected to one of the terminals, a movable contact cooperable between a first position contacting the stationary contact and a second position separated from the stationary contact and a molded case for housing the single-pole breaking units. The molded case has two opposite parallel side walls having the same thickness, the single-pole breaking units being sequentially arranged and parallel to each other and parallel to the side walls such that adjacent single-pole breaking units are spaced apart a distance equal to twice the thickness of the side walls, the single-pole breaking units being spaced apart at a constant pitch. An operating mechanism is provided to be common to all single-pole breaking units for simultaneously operating all single-pole breaking units.