Abstract: A connector arrangement is provided for supplying electric power to a three-phase motor to produce motor operation in either a delta mode or a star mode, use being made of modular units that are removably mounted within a chamber contained in an outer frame that is secured to the motor housing. A power supply module arranged within the chamber includes a main receptacle containing a stack of terminal blocks having bus bars that transmit to the motor windings three-phase power that is supplied either by external power supply lines that extend into the chamber though openings contained in the side walls of the outer frame, or from an inverter arranged externally of the outer frame. Auxiliary receptacles are removably connected with the external surface of the main receptacle for monitoring the operating condition of the motor, or for controlling a motor operation, such as braking.

Abstract: A connector assembly for connecting the flat conductors of a photovoltaic panel with an electrical component, such as a diode, printed circuit or the like, includes a conductor support body having a base portion adapted for connection with the photovoltaic panel, and a bridge portion carrying a plurality of flat seats with edges around which the free ends of the flat conductors are bent, respectively. A bus bar is provided for each flat conductor, each bus bar including a pair of resilient contacts arranged for engagement with the portion of the associated conductor that is bent around the conductor seat. A protective housing encloses the bus bars and at least the bridge portion of the support body, which housing contains openings for receiving output cables the ends of which are connected with the bus bars.

Abstract: A connector arrangement is provided for supplying electric power to a three-phase motor to produce motor operation in either a delta mode or a star mode, use being made of modular units that are removably mounted within a chamber contained in an outer frame that is secured to the motor housing. A power supply module arranged within the chamber includes a main receptacle containing a stack of terminal blocks having bus bars that transmit to the motor windings three-phase power that is supplied either by external power supply lines that extend into the chamber though openings contained in the side walls of the outer frame, or from an inverter arranged externally of the outer frame. Auxiliary receptacles are removably connected with the external surface of the main receptacle for monitoring the operating condition of the motor, or for controlling a motor operation, such as braking.

Abstract: A connector assembly for connecting the flat conductors of a photovoltaic panel with an electrical component, such as a diode, printed circuit or the like, includes a conductor support body having a base portion adapted for connection with the photovoltaic panel, and a bridge portion carrying a plurality of flat seats with edges around which the free ends of the flat conductors are bent, respectively. A bus bar is provided for each flat conductor, each bus bar including a pair of resilient contacts arranged for engagement with the portion of the associated conductor that is bent around the conductor seat. A protective housing encloses the bus bars and at least the bridge portion of the support body, which housing contains openings for receiving output cables the ends of which are connected with the bus bars.

Abstract: A terminal block connecting apparatus includes first and second support members displaceable from a disengaged condition toward an engaged condition in which corresponding main terminal blocks are brought into electrical engagement, characterized by the provision of first and second test terminal blocks connected with the support members for electrical engagement when the first and second support members are in an intermediate condition between the disengaged and engaged conditions. One of the test terminal blocks is supported by a carrier member for movement relative to the associated support member, whereby the test terminal blocks will remain in electrical engagement during displacement of the support members between the test and connected conditions. A friction retaining arrangement serves to resist displacement of the carrier member relative to its associated support member.

Abstract: A terminal block connecting arrangement includes a first terminal block having a first electrical contact, an electrical device having a second electrical contact, a test terminal block arranged between the electrical apparatus and the first terminal block for displacement between a first test position spaced from the electrical apparatus and a contact position adjacent the electrical apparatus, the test terminal block having a double-ended electrical contact. A spring-biased detent device normally retains the test terminal block in the test position. As the first terminal block is progressively displaced toward the electrical device, the first contact is brought into engagement with one end of the contact on the test terminal block. Upon further displacement of the first terminal block toward the electrical device, the detent device is released, and the test terminal block is displaced to effect connection of the first contact with the second contact via the two-ended test contact.

Abstract: A terminal block connecting apparatus includes first and second support members displaceable from a disengaged condition toward an engaged condition in which corresponding main terminal blocks are brought into electrical engagement, characterized by the provision of first and second test terminal blocks connected with the support members for electrical engagement when the first and second support members are in an intermediate condition between the disengaged and engaged conditions. One of the test terminal blocks is supported by a carrier member for movement relative to the associated support member, whereby the test terminal blocks will remain in electrical engagement during displacement of the support members between the test and connected conditions. A friction retaining arrangement serves to resist displacement of the carrier member relative to its associated support member.

Abstract: A terminal block connecting arrangement includes a first terminal block having a first electrical contact, an electrical device having a second electrical contact, a test terminal block arranged between the electrical apparatus and the first terminal block for displacement between a first test position spaced from the electrical apparatus and a contact position adjacent the electrical apparatus, the test terminal block having a double-ended electrical contact. A spring-biased detent device normally retains the test terminal block in the test position. As the first terminal block is progressively displaced toward the electrical device, the first contact is brought into engagement with one end of the contact on the test terminal block. Upon further displacement of the first terminal block toward the electrical device, the detent device is released, and the test terminal block is displaced to effect connection of the first contact with the second contact via the two-ended test contact.

Abstract: A synthetic plastic terminal block assembly includes a housing containing a longitudinal through passage in which is mounted a unitary fastening member having a center portion that is connected with the housing, and a pair of end portions resiliently connected for independent displacement relative to the center portion and to the housing, the end portions having opposed inwardly-directed hook-shaped foot portions adapted to extend under the outwardly extending flanges at the upper ends of the legs of a U-shaped mounting rail, thereby to fasten the terminal block to the rail. With this extremely simple design, the terminal block can be mounted downwardly upon the rail from above. The terminal block can be easily disconnected from the rail at either side, and if necessary, the terminal block can be pivoted laterally away from the rail.

Abstract: An initiator terminal block for connecting a plurality of initiators with an electric power source, on the one hand, and with signal receivers, on the other hand, includes a plurality of terminal units each having a plurality of connecting locations arranged in three tiers situated above one another, each of the lower two tiers of each of the terminal units having only a single one of the connecting locations while the uppermost one of the tiers of each of the terminal units has two of the connecting locations that are electrically interconnected and are to be respectively electrically connected with the respective initiator and the respective signal receiver.

Abstract: A pass-through terminal arrangement to be mounted on and extended through a mounting opening of a wall of a casing in a mounted position thereof includes a plurality of terminals each of which includes a terminal housing and a current bar having a projecting portion which extends out of the terminal housing and, in the mounted position, through the mounting opening into the interior of the casing. A sealing component is mounted on and surrounds a section of the projecting portion of each of the current bars. The terminal housings are connected in a row to a flange frame of a mounting flange which further includes a pass-through block rigid with the flange frame, at least partially received in the mounting opening in the mounted position, and having a plurality of pass-through openings each for sealingly accommodating at least the section of one of the current bars and the sealing component mounted thereon.