The CMB4BK is a 4 sq.mm panel mount feed-through terminal block in black colour, specially designed for compact electrical wiring applications in industrial control panels, machine wiring systems, automation cabinets, switchgear assemblies, and instrumentation panels. This terminal block provides a secure conductor-to-conductor electrical connection while helping maintain organized panel wiring and reliable electrical continuity in industrial installations. The black colour variant is commonly used for negative DC circuits, return lines, control circuits, or special colour-coded wiring applications in electrical panels.
One of the main advantages of the CMB4BK is its panel mount modular design, which makes it ideal for electrical systems where DIN rail mounting is not required. In many compact industrial applications, panel-mounted terminals provide better flexibility and allow engineers to create customized multi-pole wiring assemblies. The modular design allows several units to be stacked together to form organized terminal assemblies for control, signal, or power wiring applications.
The feed-through electrical function allows incoming and outgoing conductors to be connected securely through the same terminal block body, ensuring direct electrical continuity. This makes the CMB4BK suitable for machine control circuits, PLC systems, signal wiring, industrial automation cabinets, and compact electrical enclosures where organized wiring and safe conductor termination are essential. Instead of loose wire joints, the terminal block creates a secure and professional connection point.
The black colour (BK variant) is particularly useful in applications where circuit identification is important. In industrial control panels, black terminal blocks are commonly used for negative DC wiring, return signal circuits, control lines, and special identification systems, helping electricians quickly recognize circuit functions and reduce maintenance errors during servicing or troubleshooting.
The terminal block uses a screw clamp wire connection system, which provides strong conductor retention and dependable electrical contact. The screw clamp mechanism ensures low contact resistance, vibration-resistant wiring, and secure long-term performance in industrial environments where temperature changes and machine vibration can affect electrical stability. This makes the CMB4BK a reliable solution for industrial wiring applications.
The CMB4BK supports conductor sizes from 0.2 mm² to 4 mm² stranded wire and up to 6 mm² solid conductors, making it suitable for control wiring, power distribution circuits, automation systems, and machine panel installations. It is rated for 500V operating voltage and 32A current capacity, which provides reliable electrical performance in industrial low-voltage systems.
Its side wire entry design improves cable routing and installation convenience in compact electrical panels. The conductor enters from the side, helping reduce wire bending and keeping the panel layout neat and organized. This is especially useful in machine panels and industrial cabinets where space-saving wiring is important.
Manufactured using high-quality polyamide insulating material, the CMB4BK offers excellent dielectric insulation, heat resistance, and long service life in industrial environments. The insulated housing improves operator safety by reducing accidental contact risk and ensuring safe electrical operation during installation and maintenance.
The CMB4BK is commonly used in:
With its black circuit identification colour, panel mount construction, feed-through wiring function, and industrial-grade durability, the CMB4BK is a reliable terminal block solution for compact industrial electrical installations.
| Specification | Details |
|---|---|
| Product Model | CMB4BK |
| Product Type | Panel Mount Feed Through Terminal Block |
| Colour | Black |
| Rated Voltage | 500 V |
| Rated Current | 32 A |
| Connection Type | Screw Clamp |
| Product Function | Feed Through |
| Wire Size (Stranded) | 0.2 – 4 mm² |
| Wire Size (Solid) | 0.2 – 6 mm² |
| AWG Range | 22 – 10 AWG |
| Mounting Type | Panel / Surface Mount |
| Wire Entry | Side Entry |
| Housing Material | Polyamide |
| Tightening Torque | 0.5 Nm |
| Screw Size | M3 |
| Rated Surge Voltage | 4 KV |
| Pollution Degree | 3 |
| Width | 6 mm |
| Height | 28.5 mm |
| Length | 27 mm |
The CMB4BK is suitable for:
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