The CDB4/2BU is a 4 sq.mm modular distribution terminal block in blue colour, designed for safe and organized electrical power distribution in industrial control panels, switchgear assemblies, PLC systems, machine wiring, and electrical distribution boards. This terminal block is specially built to distribute one incoming power supply into multiple outgoing circuits, reducing wiring complexity and improving panel organization.
In industrial electrical systems, distributing a common power supply to several outgoing circuits often requires multiple jumper wires and complex wiring arrangements. The CDB4/2BU simplifies this process by providing a central input connection and internally connected multiple output terminals, allowing clean and secure power distribution through a single compact terminal block. This makes panel wiring faster, safer, and more professional.
The blue colour (BU variant) is generally used for neutral distribution, DC negative circuits, or colour-coded electrical identification systems in industrial panels. Colour coding helps electricians and maintenance teams identify specific circuits quickly, reducing troubleshooting time and wiring mistakes in complex electrical installations.
The CDB4/2BU features 1 incoming connection and 8 outgoing 4 sq.mm connections, making it suitable for applications where multiple branch circuits need to be supplied from one source. The central input point uses a bolt-type incoming connection, while the outgoing connections use screw clamp terminals for secure conductor retention and stable electrical contact. This design improves electrical continuity and minimizes loose connection risks.
One of the major advantages of the CDB4/2BU is its compact DIN rail mounting design. Instead of using multiple loop connections or bulky distribution methods, this modular terminal block centralizes power distribution in a compact space-saving unit. This helps panel builders optimize control cabinet space and create neat, organized wiring layouts.
Manufactured with high-grade Polyamide insulated housing, the CDB4/2BU offers excellent electrical insulation, heat resistance, and long-term mechanical durability. The protective housing also shrouds the incoming connection point, improving operator safety and preventing accidental contact during installation or maintenance.
The terminal block is rated for 800V operating voltage, with 64A input current capacity and 32A output current rating, making it suitable for industrial low-voltage distribution systems, machine panels, automation systems, and switchgear applications. It supports conductor sizes up to 16 sq.mm on the input side and 4 sq.mm on the output side.
The CDB4/2BU is widely used in:
With its blue circuit identification colour, compact modular design, secure distribution function, and industrial-grade electrical performance, the CDB4/2BU is a reliable solution for professional electrical distribution applications.
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