1. Product Overview: Engineered for Superior Protection
CJL3 is proud to announce the launch of the CJL3-63 Residual Current Circuit Breaker (RCCB), a state-of-the-art solution designed to deliver uncompromising protection against earth fault and leakage currents. Manufactured in strict compliance with IEC61008 standards, this device combines high short-circuit withstand capacity with reliable isolation functionality—making it an ideal choice for residential, commercial, and industrial applications where safety and performance are paramount.
The CJL3-63 is available in 2P and 4P pole configurations, supporting rated currents of 25A, 40A, and 63A and rated voltages of AC 230(240)/400(415)V at 50/60Hz. With a rated residual operating current (I△n) range of 0.03A, 0.1A, 0.3A, and 0.5A, the product offers flexible protection levels to accommodate diverse installation requirements.
2. Technical Excellence: Robust Construction and Intelligent Features
At the heart of the CJL3-63 lies a thoughtfully engineered construction that prioritizes durability and operational safety. Key physical and performance attributes include:
High short-circuit current withstand capacity – ensuring reliable performance under fault conditions.
Contact position indication – providing clear visual status for maintenance and troubleshooting.
Finger-protected connection terminals – enhancing installer safety during wiring.
Fire-resistant plastic parts – engineered to endure abnormal heating and strong mechanical impacts, significantly reducing fire risks.
Independent operation – the tripping mechanism functions autonomously, unaffected by power supply variations, line voltage fluctuations, or external interference, guaranteeing consistent performance in unstable grid environments.
The device automatically disconnects the circuit whenever earth fault or leakage current exceeds the rated sensitivity, delivering instantaneous protection that minimizes equipment damage and personnel hazards.
3. Performance Data: Fast Response and High Breaking Capacity
The CJL3-63 demonstrates exceptional tripping performance, as validated by rigorous testing. The residual current action breaking time table confirms that for general-type RCCBs, maximum break times are achieved at 0.3s (I△n), 0.15s (2I△n), and 0.04s (5I△n) —ensuring near-instantaneous disconnection under leakage conditions.
For applications requiring time-delayed coordination, the S-Type (Selective) version offers a minimum non-driving time of ≥0.03s, with maximum break times of 0.5s (I△n), 0.2s (2I△n), and 0.15s (5I△n), providing superior selectivity in complex electrical distribution systems.
Additional performance metrics include:
Rated making and breaking capacity: 500A (for In=25A, 40A) or 10In (for In=63A)
Rated conditional short-circuit current (Inc): 10kA
Rated conditional residual short-circuit current (I△c): 10kA
Residual tripping current range: 0.5I△n – I△n
Electro-mechanical endurance: 4,000 cycles
4. Installation and User Convenience
Designed with the electrical installer in mind, the CJL3-63 features flexible mounting options including DIN rail (35.5mm) and panel mounting, supporting both new installations and retrofit projects. The pillar terminal with clamp design accepts rigid conductors up to 25mm², with a terminal connection height of 21mm and a fastening torque of 2.0Nm—ensuring secure, reliable connections every time.
The device carries an IP20 protection class, making it suitable for indoor distribution boards and control panels.
5. Operational Assurance and Future Outlook
With the launch of the CJL3-63, CJL3 reaffirms its commitment to delivering high-performance electrical protection solutions that combine German-engineered precision with cost-effective manufacturing. The product’s power-supply-independent operation and immunity to external interference make it a trusted choice for critical infrastructure projects worldwide.
Looking ahead, CJL3 will continue to expand its product portfolio, integrating smart monitoring capabilities and enhanced connectivity features to meet the evolving demands of the smart grid and renewable energy sectors. We invite distributors, system integrators, and electrical contractors to experience the reliability and performance of the CJL3-63—your partner in safeguarding people and assets.
For technical specifications, certification documents, or bulk order inquiries, please contact our sales team or visit our official website www.cje-group.com
Post time: Sep-10-2026