An electrical device includes a housing that is intended to be mounted on a rail, and a monitoring and/or control module including a printed circuit board. In the configuration in which the electrical device is mounted on the rail, at least one ground terminal of the printed circuit board is permanently electrically connected to the rail by elastic mechanical bearing on and direct electrical contact with a connecting element, itself elastically mechanically bearing on and making direct electrical contact with the rail or with an elastic blocking member for elastically blocking the housing on the rail.

An electronics module having a latch assembly including first and second reciprocating latch portions adapted to engage respective first and second opposite edges of a mounting rail. Each of the latch portions includes a locking tab, the locking tabs movable away from each other from a latched position to an unlatched position, the first and second latch portions being coupled together for reciprocating motion, at least one of said latch portions including an actuator portion extending from the housing for manual actuation of the latch assembly between the latch and unlatched positions.

A server rack seismic restraint includes a rear restraint assembly configured to attach to a support surface that is operable to support a data center server rack. The rear restraint assembly includes at least one lateral member positioned to receive the server rack and restrain the server rack against lateral movement based on a force applied to the server rack; and an angled bracket positioned to receive the server rack and restrain the server rack against vertical movement based on the force applied to the server rack. The server rack seismic restraint also includes a front restraint assembly configured to attach to the support surface and engage the server rack to restrain the server rack against vertical movement based on the force applied to the server rack.

A controller for an industrial automation system includes a main module having a housing, which can be fitted onto a DIN rail via a base, at least two printed circuit boards arranged in the housing, and a heat sink also arranged in the housing and connected with the base. One of the circuit boards is a backplane bus printed circuit board, which provides a backplane bus, and the other is a main printed circuit board. The heat sink is attached to at least one of the printed circuit board to cool its components.

A drive carrier includes a latch wire, and a track that includes first and second segments. The latch wire is configured to move along a channel in the track to enable a handle of the drive carrier to transition between multiple positions within the track. The first segment is to be placed in physical communication with the latch wire while the latch wire is at a first position and a second position within the track. The second segment is in physical communication with the first segment. The second segment is to transition between a misaligned position and an aligned position with respect to the first segment, and the latch wire is to transition from the second position to a third position within the track in response to the second segment being in the aligned position.

A control system includes a module assembly with a base. The base can be configured for engagement with at least one module having electronic circuitry disposed therein or other electronic device. The base includes at least one latching assembly with a lever operable to move a shuttle coupled to the lever to releasably engage the base with an elongated mounting rail.

The present disclosure illustrates a clamping mechanism for an industrial input/output device. In the clamping mechanism, an operating link can be slid and rotated to drive links of mechanism elements. Therefore, the efficiency of clamping the industrial input/output device on a DIN rail or unloading the industrial input/output device from the DIN rail fast and conveniently may be achieved.

An expansion module of a programmable logic controller is provided. The expansion module comprises a function body and an expansion base. The function body comprises a housing, a circuit board and a first connector. The circuit board is disposed in the housing. The first connector is connected with the circuit board and is partially exposed from the housing. The expansion base is detachably assembled with the function body and comprises a bracket and a three-way connector. The three-way connector is detachably disposed in the bracket and comprises three conducting terminals. The first conducting terminal and the second conducting terminal are at least partially exposed from the bracket. The third conducting terminal is configured to connect with the first connector. When there are plural expansion modules, two adjacent function bodies can be detachably assembled with each other, and two adjacent expansion bases can be detachably assembled with each other.

A measuring and/or control system (1), to control for example a machine tool, comprises at least a first and a second unit, each comprising a casing with a front wall, electronic circuits and at least one socket. The system further comprises a bridge connector (11) having a first multipolar connector (11A) and a second multipolar connector (11B), each of which can be coupled to one of the sockets in order to electrically connect the first and the second unit. In each of the first unit and second unit, the socket is positioned on the respective front wall and comprises planar electrical contacts. The first and the second multipolar connectors of the bridge connector are directed in the same direction so as to face the front wall of the first unit and the second unit and each comprise retractable contacts. The bridge connector comprises fastening elements for fastening the bridge connector to the front wall of the first unit and of the second unit.

The invention relates to a clamping module for securing to a support rail, which has a housing, a bracing device and at least one retaining claw arranged thereon. The at least one retaining claw can be brought into a securing position on the support rail and clamped there by means of the bracing device, in order to detachably secure the clamping module to the support rail. According to the invention, the clamping module has a signal device, comprising at least one signal element arranged in the housing, which signal element can be moved along a predetermined movement path by placing the clamping module onto a support rail. Using the position of the signal element on the movement path, it can be identified from outside the housing whether the clamping module is correctly arranged on the support rail.