Abstract: An electric connection box includes a cover fitted on a lower side of a body having mounting portions, and the cover is fixedly secured to a vehicle body. A wire harness is extended outwardly from a portion of the body, disposed near to one corner portion thereof, through an escape groove. Plural lock mechanisms, in which a lock piece portion can be elastically fitted into a lock groove, are provided at fitting peripheral surfaces of the body and cover, and are disposed near to four corner portions thereof respectively. One lock mechanism, disposed near to a position where the wire harness is extended outwardly, has a semi-lock structure, and thus has a smaller retaining force than the other lock mechanisms.

Abstract: A protecting device is constructed by detachably mounting a protection plug in a fixed member and connecting a movable circuit in the protection plug and a fixed circuit in the fixed member to supply a power to a load and designed to prevent an arc from being created between input and output terminals when the protection plug is detached to shut a power supply off.

Abstract: An electrical connection box for a vehicle is to be mounted in an engine compartment and connected to a voltage source of the vehicle having a nominal maximum voltage of not less than 14V. The box has a casing having a rear wall which in use is mounted against an upstanding wall of the vehicle, a front wall and side walls and a bottom wall sloping downwardly. The bottom wall has a water drainage hole at its lowermost portion adjacent said rear wall. Electrical circuit insulation plates are mounted with main faces parallel to the rear wall and bus bars are mounted on said main faces. Electrical relay receiving elements, electrical fuse receiving elements and electrical connector receiving elements are located on at least one of the front and side walls. The arrangement reduces risk of problems due to water ingress.

Abstract: An electric connection box 111 comprises a stationary unit 11 and a movable member 12. The stationary unit 11 is formed integrally with a box body 113. The movable member 12 is removably attached to the stationary unit 11. When the movable member 12 is detached from the stationary unit 11, the power supply from a battery to an electric load is interrupted.

Abstract: An electrical connection box includes a protection apparatus attachment recess. The protection apparatus attachment recess accommodates a power supply breaker apparatus. The power supply breaker apparatus includes a fixed member and a movable member. The fixed member is attached to an box main body. The movable member is attached to the fixed member in an attachable and detachable manner. When the movable member is detached from the fixed member, the power supply breaker apparatus breaks the supply from a battery to an electrical load.

Abstract: An electrical connection box for use in a vehicle has bus bars in a casing with upstanding connection tabs which are alongside and spaced from each other. Insulation resin embeds the tabs while leaving exposed projecting portions. A connector attached to the casing has a housing containing terminals respectively engaged with the projecting portions of the tabs. The resin material provides a recess located between the tabs and the housing of said connector has a partition wall of insulating material which lies between the terminals and extends into the recess, to prevent leak current between the terminals.

Abstract: An electrical connection box for a vehicle has bus bars providing terminals which stand up close to each other, and an insulation plate through which the terminals project. A case member covering the insulation plate provides housing spaces for the terminals. A partitioning wall of the casing separating the housing spaces contacts the upper end of an upstanding wall of the insulation plate. One of the partitioning walls and the upstanding walls has a recess and the other has a projection received in the recess. This prevents liquid passage from one housing space to the other, and minimizes risk of current leak between terminals.

Abstract: A fixed member 11 is provided with an input terminal 2 to be connected with a battery 100 and an output terminal 9 to be connected with an electric load 101. A movable member 12 is provided with the first current pass 4 that has connecting terminals 1 and 8 to be connected with the terminal members 2 and 9 respectively in a state where the movable member 12 is attached to the fixed member 11. The fixed member 11 is provided with the second current pass 15 for connecting the terminals 2 and 9 separately from the first current pass 4, and terminal protecting contacts 30 and 31 included in the second current pass 15.

Abstract: An electrical connection box for a vehicle has a casing and at least one bus bar within the casing to which in use a high nominal maximum voltage of not less than about 14V and not more than about 200V is applied. On the upper wall of the casing, there is a relay accommodation structure an upstanding walls defining first and second recesses at which positive and negative terminals of the relay are inserted in use. The recesses are partitioned from each other by one upstanding wall which has an upper edge at which an inclined groove is provided for carrying away water by gravity. Thereby risk of leak currents is minimized.

Abstract: An electrical connection box for a vehicle has bus bars providing upstanding tabs acting as terminals, and relay terminals fitted on the tabs. An insulation plate overlies the bus bars. A case member is assembled on the insulation plate by relative downward movement and provides housing spaces for the relay terminals. A partitioning wall separating adjacent housing spaces makes sliding contact with an upstanding wall of the insulation plate during assembly, and the partitioning wall and the upstanding wall in the assembled state at least partly surround a liquid-receiving space. The upstanding wall having an inclined upper end face. The construction minimizes risk of a current leak between the relay terminals.

Abstract: An electrical connection box for a vehicle has bus bars providing terminals which stand up close to each other, and an insulation plate through which the terminals project. A case member covering the insulation plate provides housing spaces for the terminals. A partitioning wall of the casing separating the housing spaces contacts the upper end of an upstanding wall of the insulation plate. One of the partitioning walls and the upstanding walls has a recess and the other has a projection received in the recess. This prevents liquid passage from one housing space to the other, and minimizes risk of current leak between terminals.

Abstract: An electrical connection box for a vehicle has bus bars providing upstanding tabs acting as terminals, and relay terminals fitted on the tabs. An insulation plate overlies the bus bars. A case member is assembled on the insulation plate by relative downward movement and provides housing spaces for the relay terminals. A partitioning wall separating adjacent housing spaces makes sliding contact with an upstanding wall of the insulation plate during assembly, and the partitioning wall and the upstanding wall in the assembled state at least partly surround a liquid-receiving space. The upstanding wall having an inclined upper end face. The construction minimizes risk of a current leak between the relay terminals.

Abstract: An electrical connection box for a vehicle has a low-voltage bus bar and a high voltage bus bar, received in groove structures of a first insulation plate. Each groove structure is defined by a base wall surface on which the bus bar is disposed and a pair of opposed upstanding side wall surfaces. The first insulation plate has a downward recess or through-hole between the groove structures. A second insulation plate superimposed on the first plate has a downward projection received in the recess or through-hole and extending to a lower end which is below the base wall surfaces of the groove structures. The structure inhibits leak currents between the bus bars.

Abstract: An electrical connection box for a vehicle is to be mounted in an engine compartment and connected to a voltage source of the vehicle having a nominal maximum voltage of not less than 14V. The box has a casing having a rear wall which in use is mounted against an upstanding wall of the vehicle, a front wall and side walls and a bottom wall sloping downwardly. The bottom wall has a water drainage hole at its lowermost portion adjacent said rear wall. Electrical circuit insulation plates are mounted with main faces parallel to the rear wall and bus bars are mounted on said main faces. Electrical relay receiving elements, electrical fuse receiving elements and electrical connector receiving elements are located on at least one of the front and side walls. The arrangement reduces risk of problems due to water ingress.

Abstract: An electrical connection box for a vehicle has a casing and at least one bus bar within the casing to which in use a high nominal maximum voltage of not less than about 14V and not more than about 200V is applied. On the upper wall of the casing, there is a relay accommodation structure an upstanding walls defining first and second recesses at which positive and negative terminals of the relay are inserted in use. The recesses are partitioned from each other by one upstanding wall which has an upper edge at which an inclined groove is provided for carrying away water by gravity. Thereby risk of leak currents is minimized.

Abstract: An electrical connection box for use in a vehicle has bus bars in a casing with upstanding connection tabs which are alongside and spaced from each other. Insulation resin embeds the tabs while leaving exposed projecting portions. A connector attached to the casing has a housing containing terminals respectively engaged with the projecting portions of the tabs. The resin material provides a recess located between the tabs and the housing of said connector has a partition wall of insulating material which lies between the terminals and extends into the recess, to prevent leak current between the terminals.

Abstract: An electrical connection box is provided for a vehicle which has a low-voltage battery of maximum output voltage selected from 14V and 28V, and a high-voltage battery of output voltage higher than that of said first battery structure. The electrical connection box has an insulation plate and, fixed on one face of said insulation plate, first bus bars connected in use to the first battery and second bus bars connected in use to the second battery so that the first and second bus bars are at different potentials.

Abstract: An electrical connection box is provided for a vehicle which has a low-voltage battery of maximum output voltage selected from a range of from about 14V to about 28V, and a high-voltage battery of output voltage higher than that of the first battery structure. The electrical connection box has an insulation material of plate-like shape and, embedded in the insulation material, first bus bars connected in use to the first battery and second bus bars connected in use to the second battery so that the first and second bus bars are at different potentials. Connection tabs of the bus bars project out of the insulation material. Risk of leakage currents between the bus bars is thus minimized.