Robust Construction and Advanced Protection Features
The CJL10 Series is engineered to meet the demanding requirements of modern electrical installations. Key design attributes include:
Supply-Voltage-Independent Tripping – The tripping mechanism operates independently of both supply voltage and line voltage, ensuring guaranteed disconnection during earth-fault events regardless of grid fluctuations. This inherent immunity to external interference and voltage variations significantly enhances system reliability in unstable grid environments.
High Short-Circuit Withstand Capacity – Rated with a conditional short-circuit current (Inc) of 6 kA and a conditional residual short-circuit current (I△c) of 6 kA, the CJL10 provides robust protection against high-fault currents, minimising damage to downstream equipment and reducing unplanned downtime.
Fire-Resistant and Impact-Resistant Enclosure – All plastic components are manufactured from flame-retardant materials capable of withstanding abnormal heating and strong mechanical impact, ensuring long-term durability and enhanced fire safety in demanding operational settings.
User-Centric Installation Design – Equipped with finger-protected connection terminals to safeguard installers during wiring, the device also features clear contact position indication for quick visual status confirmation. Terminal connections utilise pillar terminals with clamps, accommodating rigid conductors up to 25 mm² with a fastening torque of 2.0 N·m.
Precise Residual Current Tripping Performance
The CJL10 Series is available in both general type and S-type (selective) configurations, enabling coordinated selectivity in tiered distribution systems. The breaking time characteristics are summarised below:
| Type | Rated Current (In) | I△n | Maximum Breaking Time at Indicated Residual Current |
| General Type | Any value | Any value | I△n ≤ 0.3 s / 2I△n ≤ 0.15 s / 5I△n ≤ 0.04 s |
| S-Type (Selective) | ≥ 25 A | > 0.03 A | Min. non-driving time: 0.13 s (I△n); 0.06 s (2I△n); 0.05 s (5I△n); 0.04 s (10I△n) |
For general-type RCCBs with I△n ≤ 0.03 A, a test current of 0.25 A may be applied in lieu of 5I△n for conformity verification.
Comprehensive Technical Specifications
The CJL10 Series covers a wide range of rated currents and residual current sensitivities, offering flexible application adaptability:
| Parameter | Specification |
| Applicable Standard | IEC 61008 |
| Operating Mode | Electro-magnetic type / Electronic type |
| Residual Current Characteristics | Type A, Type AC |
| Number of Poles | 2P, 4P |
| Rated Current (In) | 25 A, 40 A, 63 A |
| Rated Voltage | AC 230(240) / 400(415) V |
| Rated Frequency | 50/60 Hz |
| Rated Residual Operating Current (I△n) | 0.03 A, 0.10 A, 0.30 A, 0.50 A |
| Rated Residual Non-Operating Current (I△no) | 0.5 I△n |
| Rated Making & Breaking Capacity | 500 A (In=25 A, 40 A) / 630 A (In=63 A) |
| Rated Conditional Short-Circuit Current (Inc) | 6 kA |
| Rated Conditional Residual Short-Circuit Current (I△c) | 6 kA |
| Tripping Duration | Instantaneous (≤ 0.3 s for 0.1 A rating) |
| Residual Tripping Current Range | 0.5 I△n ~ I△n |
| Electro-mechanical Endurance | 4,000 operating cycles |
| Connection Capacity (Rigid Conductor) | 25 mm² |
| Terminal Height / Fastening Torque | 21 mm / 2.0 N·m |
| Mounting Method | Symmetrical DIN rail (35.5 mm) or panel mounting |
| Degree of Protection | IP20 |
Standardised Wiring and Flexible Installation
The CJL10 Series supports both 2-pole and 4-pole configurations, with clearly marked wiring diagrams (N, 1, 3, 5 for 2P; N, 2, 4, 6 for 4P) to facilitate error-free installation. The device mounts securely onto standard 35.5 mm symmetrical DIN rails or via panel mounting, offering versatile deployment options for new installations as well as retrofit and upgrade projects.
Strategic Commitment to Electrical Safety and Infrastructure Modernisation
The launch of the CJL10 Series reinforces C&J Electrical’s long-standing commitment to advancing electrical safety standards and supporting national infrastructure modernisation initiatives. By combining full IEC compliance with practical, field-proven design, the CJL10 delivers a cost-effective, high-reliability protection solution suitable for a broad spectrum of critical applications, including:
Public buildings and healthcare facilities
Data centres and telecommunications infrastructure
Industrial manufacturing plants
Commercial and residential distribution boards
Availability and Technical Support
The CJL10 Series RCCB is now available for order through C&J Electrical’s official sales channels and authorised distribution partners. For detailed technical documentation, installation drawings, product samples, or customisation enquiries, please contact:
Zhejiang C&J Electrical Co., Ltd.
Sales & Technical Support Department
Website:www.cje-group.com
About Zhejiang C&J Electrical Co., Ltd.
Zhejiang C&J Electrical Co., Ltd. (C&J Electrical) is a leading state-owned enterprise dedicated to the design, development, and manufacture of high-quality low-voltage electrical products. With a strong emphasis on innovation, stringent quality assurance, and international standard compliance, the company serves both domestic and overseas markets, delivering safe, intelligent, and sustainable power distribution solutions for a wide range of industries.
Post time: Sep-01-2026