General
Product type	Barrier strip -
Function	Through-wiring clamp -
Connection type	Screw connection -
Conductor cross section	2,5 mm²
Material	Hardened steel, tin-coated copper -

The Weidmüller terminal block WDU 2.5 is a passage terminal block for use in industrial electrical installations. It is designed for connecting or joining electrical conductors with a permanently secure contact. The terminal block is rated for conductor cross-sections of 2.5 mm² and features a screw connection that ensures a firm and reliable connection. The construction made of hardened steel allows for high mechanical load capacity, while the tin-plated copper ensures optimal electrical conductivity. This material combination ensures long service life and reliable performance under industrial conditions.

Terminal block is the product type used in electrical engineering for the parallel mounting of multiple terminals in a row. This enables structured and clear wiring, especially in enclosures and control systems. The passage terminal block function means that current flow is passed through the terminal block, allowing a conductor to be connected at both ends, which makes wiring more efficient.

Applications include mounting in enclosures, control systems, drive technology, and other industrial installations where a secure and durable connection of conductors is required. The terminal block is designed for use in electrical systems that require stable and resilient connections, particularly in environments with mechanical stress.

Functions and equipment in detail include a screw connection that enables secure fastening of the conductor. The use of hardened steel ensures high mechanical strength, while the tin-plated copper provides good electrical conductivity and corrosion protection. The terminal block is designed for a conductor cross-section of 2.5 mm², making it suitable for medium to high current loads.

Technology explained simply shows that the terminal block, through the combination of materials – hardened steel for mechanical stability and tin-plated copper for electrical conductivity – offers an optimal balance between strength and performance. The screw connection ensures a firm fastening that does not loosen even under vibration or mechanical stress.

Compatibility and accessories include various cross connectors that can be used to connect multiple terminals in a row. These include, for example, the ZQV 2.5N/2, ZQV 2.5N/3, ZQV 2.5N/4, ZQV 2.5N/5, ZQV 2.5N/6, ZQV 2.5N/7, ZQV 2.5N/9, ZQV 2.5N/10, ZQV 2.5N/50, as well as the WQV 2.5/2, WQV 2.5/3, WQV 2.5/4, WQV 2.5/10. These cross connectors allow for the parallel connection of multiple terminals, enabling common power supply or signal routing. Additionally, terminal markings such as WS 12/5 MM BP WS and WS 12/5 MC NE WS are available to clearly identify the terminals. A test adapter WTA 2 WDU2.5-10 is also available to check the terminal block’s functionality.

Mounting and installation are carried out by securing the terminal block in an enclosure or control system, where the screw connection holds the conductor securely. The terminal block can be mounted in rows, enabling structured wiring. The use of cross connectors allows for the parallel connection of multiple terminals, making installation more efficient.

Operational advantages include high mechanical strength, reliable electrical conductivity, and easy installation. The combination of hardened steel and tin-plated copper ensures long service life and minimizes the risk of contact issues. Mounting in rows enables clear and structured wiring, which simplifies maintenance and troubleshooting.