CDL4U(O) Double Level Open Current Bar Terminal Block is used in industrial electrical and electronic circuits where custom electronic components such as diodes, resistors, LEDs, suppressors, or other circuit components need to be soldered directly into the terminal block. It provides a compact and safe wiring solution while allowing circuit customization inside control panels, automation systems, instrumentation circuits, and special electrical applications. This makes it ideal for applications requiring signal conditioning, reverse polarity protection, lamp testing, and customized control circuit functions.
CDL4U(O) works as a double level terminal block with open current bar design, where the input and output connections are intentionally kept open so that users can solder custom electronic components between the current paths. Once the component is soldered, the terminal block performs both wire connection and circuit function integration in one compact unit. The double level design provides 4 connection points, allowing dense wiring and customized circuit creation inside DIN rail mounted electrical systems.
CDL4U(O) improves circuit safety by allowing custom protective or indication components to be integrated directly inside the terminal block. This helps reduce separate PCB assemblies or external wiring arrangements. The structured terminal block design improves fault identification, organized wiring, and safe circuit modification in industrial control and instrumentation applications.
CDL4U(O) is manufactured using high-quality Polyamide insulated housing that provides excellent electrical insulation, flame resistance, and strong mechanical durability. Its M3 screw clamp system ensures secure conductor holding and low contact resistance, while the open current bar design allows safe custom soldering of electronic components without affecting mechanical reliability.
Using CDL4U(O) improves panel wiring by combining wire connection + custom electronic circuit integration in one compact terminal block. This reduces separate circuit boards, jumper wiring, and additional panel components, saving installation space and improving maintenance convenience. Its double level design also supports high-density wiring in industrial control panels and electrical cabinets.
| Specification | Details |
|---|---|
| Model Number | CDL4U(O) |
| Product Type | Double Level Open Current Bar Terminal Block |
| Connection Type | Screw Clamp |
| Product Function | Feed Through / Custom Component Carrier |
| Number of Levels | 2 Level |
| Number of Connections | 4 |
| Rated Voltage (IEC) | 800 V |
| Rated Current (IEC) | 32 A |
| Rated Voltage (UL/CSA) | 600 V |
| Rated Current (UL/CSA) | 35 A |
| Conductor Size Solid | 0.2 – 4 mm² |
| Conductor Size Stranded | 0.2 – 4 mm² |
| Ferrule Capacity | 0.2 – 2.5 mm² |
| AWG Range | 22 – 10 AWG |
| Wire Stripping Length | 9 mm |
| Tightening Torque | 0.5 Nm |
| Screw Size | M3 |
| Wire Entry Orientation | Side Entry |
| Housing Material | Polyamide |
| Rated Surge Voltage | 4 kV |
| Pollution Degree | 3 |
| Width (Thickness) | 6 mm |
| Length | 55.5 mm |
| Height | 60.3 mm |
| Mounting Type | DIN 32 / DIN 35 / DIN 35-15 Rail |
| Operation Type | Screwdriver Operated |
| Colour | Grey |
CDL4U(O) is widely used in:
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