General
Degree of protection	Insulated
Colour	Grey
Nominal current	32 A
Conductor cross section	4 mm²

The article 281-402 from WAGO is an insulated cross bridge designed specifically for use in terminal block constructions. It serves to electrically connect multiple terminals in a row, with the insulation ensuring that no unintended short circuits occur between individual connection points. The grey colour of the bridge supports visual differentiation within control systems and facilitates maintenance and inspection. The bridge is designed for use in industrial electrical installations where reliable and safe power distribution is required.

Terminal block bridge
The bridge 281-402 is a component for terminal blocks used in enclosures, control systems, and distributions. It enables the parallel connection of multiple terminals, allowing several conductors or connections to be electrically linked. The insulation of the bridge protects against contact with adjacent conductors and prevents short circuits, especially in densely populated control systems. The grey colour is a visual feature that aids in identification and maintenance.

Functions and equipment in detail
The bridge is rated for a nominal current of 32 A, making it suitable for a wide range of applications in industrial electrical engineering. The cross-section specification of 4 mm² refers to the maximum allowable conductor cross-section that can be connected with this bridge. The insulation ensures safe electrical separation between individual terminals, minimizing the risk of short circuits. The design allows the bridge to be easily inserted and removed from the terminal row without requiring additional tools.

Technology explained clearly
The bridge 281-402 is used in terminal blocks consisting of multiple terminals arranged side by side. The bridge connects two or more terminals in the cross direction, establishing an electrical connection between them. The insulation ensures that the electrical potentials of individual terminals remain separated, except where the bridge creates the connection. The grey colour serves as a visual identifier, which is helpful during installation and maintenance. The maximum current rating of 32 A and the allowable conductor cross-section of 4 mm² are key parameters for selecting the bridge depending on the specific application.

Compatibility and accessories
The bridge 281-402 is specifically designed for use with terminal blocks from the series 281 by WAGO. It is compatible with the corresponding terminals also available in series 281. The indication IN=IN refers to the connection direction, where current flows from one terminal to the next without requiring a change in direction. The bridge is used in combination with the corresponding terminal blocks, with the insulation and mechanical fit ensuring that the bridge sits correctly and the electrical connection is reliable.

Installation and mounting
The bridge is mounted by simply inserting it into the designated openings of the terminal block. No additional tools or mounting aids are required. The bridge is slid into the terminal row, with the insulation ensuring electrical separation between individual terminals. The grey colour supports visual control during installation. Installation takes place in enclosures or distributions where safe and reliable power distribution is required. The maximum current rating of 32 A and the allowable conductor cross-section of 4 mm² must be considered during installation planning.

Advantages in operation
The bridge 281-402 provides a safe and reliable electrical connection between multiple terminals in a row. The insulation prevents short circuits and increases the safety of the system. The grey colour facilitates identification and maintenance. The simple tool-free mounting reduces installation time and error susceptibility. Compatibility with WAGO series 281 ensures uniform and standardized connection technology in industrial systems. The nominal current of 32 A and the allowable conductor cross-section of 4 mm² make the bridge suitable for a wide range of applications, particularly in industrial electrical engineering.