General
Product type	3-wire pass-through terminal
Technology	CAGE CLAMP®
Conductor cross section	0,08–2,5 mm²
Text	central labelling
Colour	Grey
DIN rail	35 x 15 mm and 35 x 7.5 mm

The WAGO 280-641 is a 3-conductor pass-through terminal block designed for use in industrial electrical installations. It enables secure and reliable connection of up to three conductors within a single terminal component, with the connection achieved via the CAGE CLAMP® principle. The terminal is rated for a conductor cross-section of 0.08 to 2.5 mm², making it suitable for a wide range of applications in electrical connection technology. The central labelling facilitates identification of individual connection points, enhancing efficiency during installation and maintenance. The grey colouring corresponds to the standard design of the WAGO product line, ensuring uniform visual appearance in enclosures.

3-conductor pass-through terminal block is the core function of this product, as it can connect three separate conductors within a single terminal module. This is particularly advantageous in control systems where multiple wires need to be joined at a single point without requiring additional terminals or connectors. The terminal is designed for mounting on support rails in formats 35 x 15 mm and 35 x 7.5 mm, ensuring compatibility with common standard support rails used in industrial applications. The use of CAGE CLAMP® technology ensures a stable and durable connection, as the conductors are securely held by a special clamping mechanism that effectively compensates for mechanical stress and thermal strain.

The central labelling allows for clear identification of individual connection points, minimizing errors during installation or subsequent maintenance work. The labelling is centrally positioned, making it easily readable even when the terminal is mounted in a row. The terminal is finished in grey, which is typical for WAGO products and supports a professional appearance in enclosures. The colour also serves as a visual reference, especially in systems where different terminal colours are used for different functions.

The terminal is rated for a maximum conductor cross-section of 2.5 mm², with a minimum cross-section of 0.08 mm². This range covers most requirements in industrial electrotechnics, from fine control wiring to heavier power supply lines. The use of CAGE CLAMP® ensures a secure and low-resistance connection that remains stable even under mechanical vibrations or temperature fluctuations. The terminal is designed for use in enclosures and control systems, where high reliability and long service life are required.

Support rail 35 x 15 mm and 35 x 7.5 mm are the standard formats on which the terminal can be mounted. These dimensions comply with common industrial standards and allow for easy integration into existing enclosure constructions. The terminal is simply clipped onto the support rail, with mounting requiring no tools. The use of support rails facilitates structured arrangement of components and ensures a clear and maintenance-friendly installation.

To extend functionality, various accessories can be combined, such as test adapters, multi-labelling systems, or bridge connectors. These components allow for individual adaptation to specific requirements, such as integrating measurement or testing equipment or visually identifying wires. The combination with test adapters such as 209-170 or 249-142 enables voltage or current measurements without disconnecting the cable. Multi-labelling systems such as 793-501 or 793-5501 allow individual labelling of terminals, simplifying documentation and maintenance. Bridge connectors such as 780-453 or 780-456 are used to connect multiple terminals in a row, enabling parallel power supply or signal routing.

Mounting is achieved by simply clipping the terminal onto the support rail, requiring no additional tools. The terminal is designed to automatically snap into the support rail, ensuring secure fastening. The conductor connection is made via the CAGE CLAMP® system, where the conductor is inserted into the terminal and securely clamped by a pressure mechanism. This process is quick and requires no additional tools such as screwdrivers or pliers. The terminal is therefore particularly suitable for applications requiring fast and reliable installation.

In operation, the WAGO 280-641 offers high reliability and long service life. The connection remains stable even under mechanical stress such as vibrations or shocks. The CAGE CLAMP® technology minimizes the risk of contact resistance, which could lead to heating or failures. The terminal is designed for use in industrial environments where high demands are placed on electrical safety and functionality. Typical applications include enclosures, control systems, or distributors, where the terminal can be used in both new installations and modernization of existing systems.