A contacting device has a housing having a first opening for inserting the electrical conductor and the electrical plug into a cavity in the housing, and having a second opening for inserting the electrical conducting track into the cavity in the housing. The contacting device further has a contact bridge which is arranged in the cavity in the housing and comprises a first portion for fixing the electrical conductor to the electrical conducting track in a force fit, and a second portion for retaining the electrical plug on the electrical conducting track and pressing it thereagainst.

A seal board includes a circuit board with vias, conductor pins, and solder joints. The solder joints connect and seal each conductor pin to a single via, such that each conductor pin extends through the via and extends from a first side of the circuit board and a second side of the circuit board. The seal board is mounted to cover an opening in a bulkhead that separates a first compartment (such as a terminal block compartment) from a second compartment (such as an electronics or feature board compartment). The seal board provides electrical paths between the compartments while protecting components within one of the compartments from the surrounding environment.

Electrical connectors, electrical modules, and systems are provided. In one aspect, an electrical connector includes a housing defining a side surface, an electrical conductor supported by the housing and including an engagement portion proximate the side surface of the housing. The engagement portion is adapted to engage another electrical conductor of another electrical connector. The connector also includes a magnet supported by the housing proximate the side surface of the housing, a projection extending from the side surface of the housing, and a receptacle defined in the side surface of the housing. In other aspects, an electrical module includes at least one of these electrical connectors. In further aspects, a system includes a plurality of these modules and the modules are selectively couplable together.

In an assembly, the electrical connection unit includes an insulating base member including a plate-shaped or sheet-shaped flat surface portion, a conductive bus bar held by the flat surface portion, a plurality of electronic components provided on a first side in a first direction with respect to the base member and each including a terminal electrically connected to the bus bar and a connector connection portion, and a plurality of connector members each including a first connector detachably connected to the connector connection portion and a second connector disposed toward the first direction, and a routing member includes a plurality of relay connectors provided at positions corresponding to the second connectors of the plurality of connector members and insertable into and removable from the second connectors of the plurality of connector members in the first direction, and a support integrally supporting the plurality of relay connectors.

A set is provided that includes a plurality of adapter plates for connecting conductor terminals of different sizes. An adapter plate of such a set and a conductor terminal block which is modularly constructed from individual conductor terminals and adapter plates of such a set, are also provided.

An electrical connection unit includes a bus bar and a base member. The base member has an accommodation portion in which at least a part of the bus bar is accommodated, and has an insulating property. The electrical connection unit is provided with a holding structure. The holding structure includes at least either of a plurality of protrusions protruding from an inner surface of the accommodation portion toward the bus bar and a plurality of protrusions protruding from a surface of the bus bar toward the inner surface of the accommodation portion. The holding structure holds the bus bar with respect to the accommodation portion in a state in which a gap is formed between the inner surface of the accommodation portion and the bus bar.