A modular electrical bus system for a valve manifold has a communication module, a valve driver module, and a plurality of I/O modules each having a plurality of I/O fittings being both electrically and mechanically connectable together via a bridge member connecting adjacent modules. The bridge member has a housing with an interior for housing electronic components for memory storage or Wi-fi reception and transmission that is operably connected to a complementary electrical fitting constructed to be connected to an electrical fitting of a module of said electrical fieldbus system without adding extra length to said bank of modules of said electrical fieldbus system.

A conductor rail module for distributing and a corresponding connection module for tapping a direct current distributed along a mounting rail is described. The connection module comprises a housing whose electrically insulating rear section is connected or connectable to the mounting rail in a form-fit manner. A front section of the housing has a plurality of electrically insulating transverse struts extending transversely to a longitudinal direction of the conductor rail module. Furthermore, the conductor rail module comprises at least two conductor rails extending in the longitudinal direction in the housing between the rear section and the front section, which conductor rails are configured to contact the connection modules for distributing the direct current through a gap between the transverse struts when the connection modules are in a position mounted on the conductor rail module.

An electrical terminal block with simplified switching operations, which can be produced in a cost-effective and time-saving manner.

A fixing system includes a rail fixture having a plurality of first interlocking devices arranged along the rail fixture and a plurality of interlocking modules each having a second interlocking device. The interlocking modules are affixed to the rail fixture by inserting the second interlocking devices through a plurality of gaps between the first interlocking devices and sliding the interlocking modules along the rail fixture into a positive lock.

A bus module (100) includes an insulating body (10) and multiple conductors (20), and the insulating body (10) includes a first insulator (11), a second insulator (12) installed at a position corresponding to the first insulator (11), and two locking arm (111) installed on two sides of the first insulator (11) separately. Each conductor (20) is parallelly embedded in the insulating body (10) and includes a lapping plate (21), a clamping portion (22) extended from the lapping plate (21) and an end pin (23) extended from the lapping plate (21) in a direction away from the clamping portion (22), and the lapping plate (21) is disposed between the first insulator (11) and the second insulator (12) and exposed to the outside, and the clamping portion (22) is accommodated in the second insulator (12), and the end pin (23) is accommodated in the first insulator (11).

A terminal block includes an insulative body, a conductive member, an elastic sheet and a pressing member. The insulative body has a receiving room therein and is formed with a pressing hole and a wire hole, which separately communicate with the receiving room. The conductive member is received in the receiving room and has a seat and a contact portion tilted up from the seat. The elastic sheet is received in the receiving room. An end of the elastic sheet is in contact with the conductive member. The pressing member is disposed in the pressing hole and capable of moving toward the receiving room to push another end of the elastic member. The pressing member has a placement slot. Each of two sides of the placement slot has a blocking wall.

A connection terminal for connecting at least one electrical conductor includes: a housing; a first connection space formed in the housing; a second connection space formed in the housing; a first busbar piece arranged in the first connection space; a second busbar piece arranged in the second connection space; a first torsion spring which is arranged in the first connection space and has a clamping limb and a retaining limb; and a second torsion spring which is arranged in the second connection space and has a clamping limb and a retaining limb. The first connection space and the second connection space adjoin one another. The first torsion spring is arranged in the first connection space and the second torsion spring is arranged in the second connection space such that the retaining limb of the first torsion spring is supported by the retaining limb of the second torsion spring.

A conductor rail module for distributing and a corresponding connection module for tapping a direct current distributed along a mounting rail is described. The connection module comprises a housing whose electrically insulating rear section is connected or connectable to the mounting rail in a form-fit manner. A front section of the housing has a plurality of electrically insulating transverse struts extending transversely to a longitudinal direction of the conductor rail module. Furthermore, the conductor rail module comprises at least two conductor rails extending in the longitudinal direction in the housing between the rear section and the front section, which conductor rails are configured to contact the connection modules for distributing the direct current through a gap between the transverse struts when the connection modules are in a position mounted on the conductor rail module.

A terminal block includes an insulative body, a conductive member, an elastic sheet and a pressing member. The insulative body has a receiving room therein and is formed with a pressing hole and a wire hole, which separately communicate with the receiving room. The conductive member is received in the receiving room and has a seat and a contact portion tilted up from the seat. The elastic sheet is received in the receiving room. An end of the elastic sheet is in contact with the conductive member. The pressing member is disposed in the pressing hole and capable of moving toward the receiving room to push another end of the elastic member. The pressing member has a placement slot. Each of two sides of the placement slot has a blocking wall.

A connection terminal for connecting at least one electrical conductor includes: a housing; a first connection space formed in the housing; a second connection space formed in the housing; a first busbar piece arranged in the first connection space; a second busbar piece arranged in the second connection space; a first torsion spring which is arranged in the first connection space and has a clamping limb and a retaining limb; and a second torsion spring which is arranged in the second connection space and has a clamping limb and a retaining limb. The first connection space and the second connection space adjoin one another. The first torsion spring is arranged in the first connection space and the second torsion spring is arranged in the second connection space such that the retaining limb of the first torsion spring is supported by the retaining limb of the second torsion spring.