General
Modular spacing	4,2 mm
Number of poles	2
Nominal current	17,5 A
Colour	Red

The FBS 2-4 plug bridge from Phoenix Contact is a component for connection technology in industrial electrical engineering. With manufacturer number 3030116 and a pitch of 4.2 mm, it is designed for use in terminal block constructions. The plug bridge connects two poles together, enabling an electrical connection between two terminals in a control cabinet or a plug strip. Its use is typical in automation technology applications, where a secure and reliable electrical connection between individual terminals is required.

Plug bridge
The FBS 2-4 plug bridge is a two-pole component used in terminal blocks to electrically connect two adjacent terminals. It is inserted into the socket holes of the terminals, ensuring a secure electrical connection. The design is intended for use in industrial environments where high mechanical stability and electrical reliability are required. The red colour serves as a visual identifier and facilitates recognition within the control cabinet.

Functions and equipment in detail
The plug bridge has a pole count of 2, meaning it connects two terminals together. The pitch of 4.2 mm corresponds to the standard for many terminal blocks and ensures compatible installation in corresponding control cabinets. The rated current capacity is 17.5 A, indicating the maximum current the plug bridge can continuously transmit without overheating or malfunction. This specification is crucial for selecting the appropriate plug bridge based on the electrical load in the respective application system.

Technology explained simply
The plug bridge operates without additional screwing or soldering. It is simply inserted into the socket holes of the terminals, creating a secure electrical contact. The design is based on a metallic conductor that connects the two poles. The red colour is a visual feature that helps quickly identify the bridge's function during maintenance or servicing. The current rating of 17.5 A is sufficient for many standard applications in automation technology, such as connecting signal or power lines.

Compatibility and accessories
The FBS 2-4 plug bridge is specifically designed for terminal blocks with a pitch of 4.2 mm. It is therefore compatible with other components in the Phoenix Contact portfolio that also feature this pitch. Use in combination with terminal blocks enables a modular and flexible control cabinet construction.

Mounting and installation
Mounting is done by simply inserting the plug bridge into the corresponding socket holes of the terminals. No tools or additional mounting aids are required. The bridge fits securely due to the shape of the socket holes and the bridge conductor, preventing accidental dislodgement. Installation takes place within the closed control cabinet, and the electrical connection becomes effective immediately after insertion.

Advantages in operation
The plug bridge provides a quick and secure connection between two terminals without requiring additional connection techniques such as soldering or screw connections. The rated current capacity of 17.5 A ensures reliable current transmission in typical industrial applications. The red colour supports maintenance and servicing by visually highlighting the bridge's function. Compatibility with the 4.2 mm pitch enables flexible integration into existing control cabinet constructions.