CDL4UED2 Double Level Terminal Block with Diode Circuit (D2 Configuration) is used in industrial electrical and control circuits where arc suppression, reverse voltage protection, and safe DC load switching are required. It is specially designed for DC contactor coils, solenoid valves, relay coils, PLC output protection, and automation control circuits. The inbuilt diode circuit helps suppress voltage spikes generated during switching, protecting sensitive control components and improving circuit reliability in industrial automation systems.
CDL4UED2 works as a double level screw clamp terminal block with inbuilt D2 diode circuit configuration. It provides 4 connection points in a compact double-level body while integrating an internal diode-based suppression circuit inside the terminal block. When connected across DC inductive loads such as contactor coils or solenoid valves, the inbuilt diode absorbs reverse voltage spikes generated during switching and protects connected control electronics from electrical damage. This reduces the need for separate external suppression components and simplifies control panel wiring.
CDL4UED2 improves circuit safety by integrating the diode suppression circuit directly inside the terminal block, helping protect control circuits from damaging reverse voltage spikes. This improves wiring reliability, reduces wrong external suppression component installation risk, and makes troubleshooting easier in industrial control panels. Its structured double-level design also improves maintenance visibility and safer wiring access.
CDL4UED2 is manufactured using high-quality Polyamide insulated housing that provides strong mechanical durability, flame resistance, and excellent electrical insulation performance. Its M3 screw clamp system ensures secure conductor holding and low contact resistance, while the integrated diode circuit is safely enclosed inside the terminal body for reliable long-term industrial performance.
Using CDL4UED2 improves panel wiring by combining wire connection + diode protection + arc suppression function in one compact terminal block. This reduces separate external diode wiring, saves panel space, improves installation speed, and creates a cleaner and more professional control panel layout in industrial automation systems.
| Specification | Details |
|---|---|
| Model Number | CDL4UED2 |
| Product Type | Double Level Terminal Block with Electronic Component |
| Configuration | D2 Diode Circuit |
| Connection Type | Screw Clamp |
| Product Function | With Electronic Components – Diode |
| Number of Levels | 2 Level |
| Number of Connections | 4 |
| Rated Voltage (IEC) | 500 V |
| Rated Current (IEC) | 32 A |
| Rated Voltage (UL) | 600 V |
| Rated Current (UL) | 35 A |
| Rated Voltage (CSA) | 300 V |
| Rated Current (CSA) | 25 A |
| Conductor Size Solid | 0.2 – 6 mm² |
| Conductor Size Stranded | 0.2 – 4 mm² |
| Ferrule Capacity | 0.2 – 4 mm² |
| Twin 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 |
| Width (Thickness) | 6 mm |
| Length | 55.5 mm |
| Height (DIN 32 Rail) | 60.3 mm |
| Height (DIN 35 x 15 Rail) | 63.1 mm |
| Height (DIN 35 x 7.5 Rail) | 55.7 mm |
| Mounting Type | DIN 32 / DIN 35 / DIN 35-15 Rail |
| Operation Type | Screwdriver Operated |
| Diode Circuit Type | D2 |
| Colour | Grey |
| Standard Pack | 100 Nos |
CDL4UED2 is widely used in:
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