Delixi CDM3LS series residual current action circuit breaker is designed for leakage protection, indirect contact protection, fire protection caused by ground fault current, and line overload / short circuit protection in low-voltage distribution systems. This series combines MCCB structure with residual current protection functions for industrial panels, power distribution boards, construction projects and OEM equipment.
1. Product overview
The CDM3LS series is suitable for power, construction, industrial and OEM electrical applications where reliable residual current protection and circuit isolation are required. It supports multiple frame sizes, adjustable residual current settings and optional delay configurations for selective protection.
2. Main features
- Residual current protection for indirect contact and earth fault fire protection
- Overload and short circuit protection for distribution circuits and equipment
- Available in 125AF, 160AF, 250AF, 400AF, 630AF and 800AF frame sizes
- 2P, 3P and 4P versions available depending on frame
- Rated current range from 16A to 800A depending on frame level
- Breaking capacity options up to 75kA at AC 415V depending on frame
- Adjustable residual current settings including 30mA, 100mA, 300mA, 500mA and 1000mA options
- Non-delay and delay versions available for coordination and selective protection
- Supports fixed front, fixed rear, plug-in and insert installation structures
- Complies with IEC 60947-2 and GB/T 14048.2
3. Technical data
| Item | Specification |
|---|---|
| Series | CDM3LS |
| Product type | Residual Current Action Circuit Breaker |
| Frame sizes | 125AF / 160AF / 250AF / 400AF / 630AF / 800AF |
| Rated current range | 16A to 800A depending on frame |
| Poles | 2P / 3P / 4P |
| Rated working voltage Ue | 230V (2P), 400/415V |
| Rated insulation voltage Ui | 800V |
| Impulse withstand voltage Uimp | 8kV |
| Breaking capacity | 25kA / 35kA / 50kA / 75kA depending on frame and version |
| Residual current settings | 30mA, 100mA, 300mA, 500mA, 1000mA depending on model |
| Frequency | 50Hz / 60Hz |
| Standards | IEC 60947-1, IEC 60947-2, GB/T 14048.1, GB/T 14048.2 |
4. Typical applications
- Low-voltage power distribution systems
- Industrial control panels and switchboards
- Commercial buildings and infrastructure projects
- OEM machinery and electrical cabinets
- Sites requiring combined earth leakage and overcurrent protection
5. Available options
CDM3LS models can be configured with different pole arrangements, residual current settings, delay selections and accessories. Common accessory options include shunt release, undervoltage release, auxiliary contact, alarm contact and operating mechanisms.
6. Why choose this series
Compared with ordinary molded case circuit breakers, the Delixi CDM3LS series adds residual current monitoring and protection functions while maintaining strong short-circuit and overload protection capability. It is a practical choice for buyers seeking reliable leakage protection in distribution-level MCCB applications.
7. Ordering support
If you need help selecting the correct frame size, pole configuration, residual current setting or accessory combination, contact us with your target current, poles, voltage and application scenario. We can recommend the suitable CDM3LS model for your project.
8. Original catalogue pages
Below are the original catalogue parameter pages converted directly from the PDF. Wide spread pages are split into left and right images to keep the text readable.
