In residential, commercial and industrial electrical systems, electric leakage is one of the most common and dangerous hidden risks, easily causing electric shock injuries and electrical fire accidents. To solve leakage safety hazards, professional residual current protection devices have become essential electrical accessories for power distribution systems. Among them, Rccb Residual Current Circuit Breaker is the most widely used core safety protection device in modern low-voltage power distribution.
An RCCB or Earth Leakage Circuit Breaker (ELCB), commonly known as a circuit breaker, is a safety device that cuts off electricity supply upon detecting electricity leakage in your home. It protects you and your family from electrical shocks or injury.
Different from ordinary Rccb Mcb that only provides overload and short-circuit protection, Rccb Rcd focuses on residual current monitoring and leakage protection. It can instantly identify tiny unbalanced current leakage in the circuit and automatically trip to cut off the power supply, effectively avoiding personal electric shock and equipment burnout caused by electric leakage. As a professional Rccb Circuit Breaker, it is irreplaceable in household power distribution, commercial engineering and industrial terminal circuits.
Zhejiang C&J Electrical co., ltd. (referred to as C&J Electrical) launches the CJL1-125 series high-performance Rccb, which adopts a new generation of plastic mechanical structure and optimized tripping technology. With complete specifications, stable performance and high safety factor, this residual current circuit breaker supports AC type, A type and B type circuit adaptation, covering multi-current and multi-voltage working conditions, and is widely applicable to global household, commercial and industrial low-voltage power distribution leakage protection scenarios.
Core Functions of Rccb Residual Current Circuit Breaker
The core function of standard RCCB devices is residual current protection, making up for the protection blind spot of ordinary MCB circuit breakers. Its main working functions are as follows:
- Real-time Leakage Monitoring: The device continuously monitors the current balance of the live wire and neutral wire in the circuit. Once residual current leakage occurs due to line aging, equipment damage or improper wiring, the device will capture the abnormal signal in real time.
- Instant Tripping Protection: When the leakage current reaches the rated operating value, the Rccb Rcd will trip quickly to cut off the power supply, preventing human electric shock accidents and avoiding electrical fires caused by leakage heating.
- Circuit Safety Monitoring: It can effectively detect hidden dangers such as line insulation damage and equipment leakage, helping users eliminate potential faults in advance and improve the overall safety of the power distribution system.
- Wide Compatibility Protection: Different types of CJL1-125 Rccb Circuit Breaker can adapt to AC, pulsating DC and smooth DC leakage scenarios, meeting the protection needs of conventional circuits and new energy equipment circuits.
C&J Electrical CJL1-125 Rccb Product Overview
CJL1-125 series residual current circuit breaker is a new-generation high-safety leakage protection device developed by C&J Electrical for global low-voltage power distribution systems. Compared with traditional leakage circuit breakers, this Rccb Mcb abandons the traditional metal operating structure and adopts an integrated plastic mechanical structure, with more stable tripping performance, longer mechanical life and more environmentally friendly use characteristics.
The whole machine adopts full copper current-carrying parts to ensure stable current transmission and reduce heat generation during long-term operation. All fixing screws are equipped with plastic sealing covers to block the assembly holes, which can effectively prevent unauthorized disassembly and improve product safety and structural stability. Equipped with a large-size transparent marking plate, it supports users to mark and distinguish different circuit loops, facilitating on-site installation, debugging and later operation and maintenance management.
This series of Rccb Residual Current Circuit Breaker supports 2P and 4P pole specifications, covering 230V single-phase and 400V three-phase power supply systems. The current range covers 16A to 125A, with multiple residual current grades of 10mA, 30mA, 100mA and 300mA, adapting to precision household protection, conventional engineering protection and industrial high-current leakage protection scenarios.
Unique Product Advantages
- New-Generation Plastic Mechanism: Adopts integrated plastic operating structure, with more stable release force and longer mechanical cycle life than traditional metal structures. It features environmental protection performance and belongs to the upgraded new-generation protection mechanism.
- Full Copper Conductive Structure: All internal current-carrying components are made of copper material, which ensures low resistance, low heat generation and stable current transmission, avoiding aging and failure caused by long-term overload heating.
- Anti-Disassembly Safety Design: All matching screws are covered with plastic sealing covers to block assembly holes, preventing random disassembly by non-professionals and improving product operation safety.
- Customizable Transparent Marking Area: Equipped with a large-size transparent signboard, which is convenient for users to make personalized circuit marks and distinguish different functional loops, improving on-site management efficiency.
- Optimized Tripping Structure: The brand-new upgraded tripping structure improves the sensitivity and accuracy of leakage induction, ensuring rapid and reliable tripping when leakage faults occur.
- Multi-Type Circuit Adaptation: Supports AC type, A type and B type circuit protection, compatible with conventional AC circuits and new energy DC leakage circuits, with extremely wide scenario adaptability.
Complete Technical Parameters
CJL1-125 series Rccb Circuit Breaker has complete and standardized technical parameters, meeting IEC international electrical standards and global low-voltage distribution engineering requirements:
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Technical Items
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Specifications
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Rated Current
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16A,20A,25A,32A,40A,50A,63A,100A,125A
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Rated Voltage
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230V (1P+N), 400V (3P+N)
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Rated Frequency
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50/60Hz
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Number of Poles
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2P, 4P
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Module Size
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36mm
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Circuit Type
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AC type, A type, B type
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Breaking Capacity
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6000A
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Rated Residual Operating Current
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10mA, 30mA, 100mA, 300mA
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Operating Temperature Range
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-5°C ~ 40°C
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Terminal Tightening Torque
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2.5~4N/m
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Top/Bottom Terminal Capacity
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25mm²
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Electro-mechanical Endurance
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4000 cycles
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Installation Method
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35mm DinRail Mounting
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Applicable Busbar
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PIN Busbar
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Application Scenarios
Relying on high safety, stable performance and wide adaptability, CJL1-125 Rccb Residual Current Circuit Breaker covers household, commercial and industrial full-scenario low-voltage power distribution leakage protection:
- Household Power Distribution: Used for household main circuit and branch circuit leakage protection, preventing electric shock accidents caused by electrical equipment leakage and line aging, and protecting family personal safety.
- Commercial Buildings: Suitable for shopping malls, office buildings, hotels and other public building power distribution systems, providing stable leakage protection for large-scale electrical equipment and centralized power consumption circuits.
- Industrial Terminal Circuits: Applied to factory workshop terminal power distribution equipment, mechanical and electrical equipment circuit protection, adapting to long-term high-load industrial power consumption scenarios.
- New Energy Scenarios: A-type and B-type products adapt to photovoltaic, energy storage and charging pile circuit leakage protection, covering DC residual current protection requirements of new energy equipment.
- Public Facilities: Used for community public facilities, municipal lighting and other power distribution systems, improving the overall safety of public electrical systems.
Product Services & Supply Advantages
CJL1-125 series Rccb Mcb has rich specification gradients, wide temperature adaptability and high safety performance. It supports multiple current, voltage and circuit type options, which can meet the differentiated selection needs of different scenarios and projects.
C&J Electrical provides comprehensive supporting services for this series of products, supporting OEM/ODM brand customization to meet personalized product and solution needs of global customers. We support SKD loose parts delivery to adapt to diverse procurement and assembly cooperation modes. If you have any questions about product selection, parameter matching, scenario adaptation and customized cooperation, please feel free to contact us for professional technical support.
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To sum up, Rccb Residual Current Circuit Breaker is an indispensable safety barrier for low-voltage power distribution systems, making up for the leakage protection blank of ordinary circuit breakers. C&J Electrical CJL1-125 series Rccb Rcd adopts upgraded structural design and stable protection performance, providing reliable leakage safety protection for global residential, commercial and industrial power distribution projects.
Welcome global customers to consult, purchase and customize products. C&J Electrical will provide full-cycle professional after-sales service and technical support.
Post time: Jul-30-2026