General
Nominal voltage	800 V
Nominal current	32 A
Number of connections	2
Connection type	Screw connection
Rated cross-sectional area	4 mm²
Cross section	0,2 - 6 mm²
Mounting method	NS 35/7,5, NS 35/15, NS 32
Colour	Blue

The UK 5 N BU passage terminal block from Phoenix Contact is a component for industrial connection technology, used for safe and reliable connection of cables within an enclosure. With a rated voltage of 800 V and a rated current of 32 A, it is suitable for use in medium to high voltage ranges. The terminal block features two connections, enabling cables to pass through the block, thus ensuring a continuous electrical connection. The connection method is via screw connection, providing a secure and mechanically stable connection. The rated cross-section is 4 mm², with the terminal block designed for conductor cross-sections between 0.2 mm² and 6 mm². Mounting is on standard rails according to NS 35/7.5, NS 35/15, and NS 32, enabling universal installation in common enclosures. The terminal block is blue in colour, supporting visual identification within the enclosure.

Passage terminal block is the central feature of this product, as it describes the function of guiding cables through the terminal block without interrupting the electrical connection. This design is commonly used in control systems where continuous cable routing is required, for example, when connecting multiple switching devices or rerouting cables within an enclosure. The screw connection technique ensures a mechanically secure connection that remains stable even under vibration and mechanical stress. The rated voltage of 800 V and the rated current of 32 A define the electrical limits within which the terminal block can be safely operated. The mounting method on NS rails is a standard in industrial electrical engineering and enables quick and secure installation.

The terminal block is designed for use in industrial environments where high reliability and mechanical stability are required. It is particularly suitable for applications in automation technology, machine building, and electrical installation. The compatibility with cables having a cross-section from 0.2 mm² to 6 mm² makes it flexible for use, whether for fine signal cables or heavier power cables. The blue colour serves as visual identification and can be used within colour-coding systems in the enclosure to identify function or cable type.

To extend functionality and improve organisation within the enclosure, various accessories can be combined. These include, for example, insulated bridges such as FBI 2-6, which enable electrical isolation between connections, or insulating sleeves in green or red, which serve for identification or protection of connections. Test plug sockets such as PSBJ 3/13/4 or PSB 3/10/4 allow measurement and testing of cables without interrupting the connection. Sectional divider plates such as ATP-UK or partition discs such as TS-K help structure the enclosure and visually separate different circuits. Warning signs such as WS 5-6 or WS 4-6 serve identification and safety purposes. Bridges in various colours (e.g. grey, red) or zigzag bands such as ZB 6,LGS:FORTL.ZAHLEN 1-10 or ZB 6:UNBEDRUCKT 1051003 support labelling and organisation in the enclosure. Individual covers such as EA 5-WS offer additional protection and visual separation.

Mounting is achieved by securing to the specified NS rails, with the terminal block featuring an integrated rail mounting. Installation requires no additional tools other than a screwdriver or suitable wrench. The terminal block is placed onto the rail and fixed via the screw connection. Cables are inserted into the connection openings and securely clamped by tightening the screws. The installation is quick and requires no special prior knowledge. The use of accessories such as insulating sleeves or warning signs can enhance safety and clarity within the enclosure.

In operation, the terminal block provides a stable and reliable electrical connection that remains intact even under industrial conditions with vibration and mechanical stress. The screw connection ensures a permanent contact without risk of connection loss. The colour coding supports visual orientation within the enclosure, facilitating maintenance and fault diagnosis. The combination with accessories such as test plugs or bridges extends functionality and allows flexible adaptation to different requirements. The terminal block is part of a comprehensive system of connection components offered by Phoenix Contact and can be supplemented with other products such as markers, partition plates, or warning signs to optimise functionality and safety in the enclosure.