In modern low-voltage electrical systems, safety protection is the top priority, and Circuit Breaker Rcd (Residual Current Device integrated with Circuit Breaker) has become a core component to ensure electrical safety. Combining the overcurrent protection function of the circuit breaker and the leakage protection function of the RCD, it forms a comprehensive safety barrier for electrical circuits. Zhejiang C&J Electrical co., ltd. (referred to as C&J Electrical) is deeply engaged in the field of low-voltage electrical protection, and its launched CJL3-63 (ID model) RCCB (Residual Current Circuit Breaker) integrates excellent Circuit Breaker Rcd performance, providing reliable safety guarantee for various electrical scenarios.
Core Definition & Life-Saving Value of RCD on Circuit Breaker
An RCD, or residual current device, is a life-saving device which is designed to prevent you from getting a fatal electric shock if you touch something live, such as a bare wire. It can also provide some protection against electrical fires. When integrated with a circuit breaker, the Circuit Breaker Rcd not only inherits the circuit breaker’s functions of overload and short-circuit protection but also adds the core advantage of residual current (leakage) protection, realizing “multi-protection in one” for the electrical circuit.
The core principle of Circuit Breaker Rcd is to monitor the balance of current in the circuit. Under normal operation, the current flowing into the load through the live wire is equal to the current flowing back through the neutral wire. When a leakage fault occurs (such as human body electric shock, equipment insulation damage), part of the current will flow into the ground, resulting in an imbalance between the incoming and outgoing currents. The RCD component in the Circuit Breaker Rcd can quickly detect this residual current. When it exceeds the rated sensitivity, it will drive the circuit breaker to trip immediately, cutting off the power supply to avoid electric shock accidents and fire hazards caused by leakage.
Overview of Circuit Breaker Rcd
Circuit Breaker Rcd, also known as residual current circuit breaker (RCCB), is a combined electrical device integrating residual current protection, overload protection and short-circuit protection. It is mainly composed of circuit breaker body, residual current detection unit, tripping mechanism and auxiliary components. According to the working principle, it can be divided into electromagnetic type and electronic type; according to the residual current characteristics, it can be divided into AC type, A type and other specifications to adapt to different load types and application scenarios.
Compared with the separate installation of circuit breakers and independent RCDs, the integrated Circuit Breaker Rcd has obvious advantages: compact structure, small installation space, convenient wiring and maintenance; the coordination between protection functions is more reliable, avoiding the mismatch problem caused by separate configuration; the operation is simpler, and the fault status can be displayed intuitively, which is convenient for users to check and troubleshoot.
High-quality Circuit Breaker Rcd products usually comply with international authoritative standards such as IEC 61008 and national standards such as GB 16917, ensuring stable performance and reliable protection. They are widely used in residential, commercial, industrial and other fields, and are an important part of the electrical safety protection system.
Core Functions of Circuit Breaker Rcd
As a comprehensive electrical protection device, Circuit Breaker Rcd integrates multiple core functions, forming a all-round safety defense line for electrical circuits:
- Electric shock protection: The core function of RCD. When a human body touches a live part and causes leakage, it can quickly trip within milliseconds, cut off the power supply, and prevent fatal electric shock accidents.
- Leakage fire prevention: For electrical fires caused by insulation aging, wire short circuit and other leakage faults, it can cut off the circuit in time to eliminate fire hazards.
- Overload protection: Inherit the thermal tripping function of the circuit breaker. When the circuit current exceeds the rated value for a long time, it trips after a certain delay to prevent the wire from overheating and aging.
- Short-circuit protection: With magnetic tripping function, when a short-circuit fault occurs in the circuit and the current rises sharply, it trips instantly to cut off the fault circuit and avoid equipment damage and fire.
- Isolation function: After tripping, it can reliably isolate the fault circuit from the power supply, ensuring the safety of maintenance personnel during inspection and maintenance.
- Stable operation under complex conditions: Advanced products are independent of power supply and line voltage, not affected by external interference and voltage fluctuation, and can operate stably in various harsh electrical environments.
C&J Electrical’s CJL3-63 (ID Model) RCCB: Core Advantages & Product Overview
C&J Electrical’s CJL3-63 (ID model) RCCB is a high-performanceCircuit Breaker Rcd product designed for various low-voltage electrical scenarios. It integrates multiple protection functions and excellent structural design, and its core functions and characteristics are tailored to meet the high safety requirements of modern electrical systems. The detailed functions, characteristics and technical parameters are as follows:
Core Functions & Structural Characteristics
- Comprehensive protection: Provides protection against earth fault/leakage current and has isolation function, integrating leakage protection and circuit isolation.
- Strong short-circuit resistance: High short-circuit current withstand capacity, can reliably withstand short-circuit current impact, ensuring the safety of the device and the circuit.
- Intuitive status indication: Equipped with contact position indication, users can intuitively check the on-off status of the circuit, which is convenient for daily inspection and fault troubleshooting.
- Safe wiring design: Equipped with finger-protected connection terminals, effectively preventing electric shock accidents during wiring and maintenance, improving operational safety.
- High-quality material: Fire-resistant plastic parts can withstand abnormal heating and strong impact, ensuring the stability and durability of the product in harsh environments.
- Reliable leakage tripping: Automatically disconnects the circuit when earth fault/leakage current occurs and exceeds the rated sensitivity, quickly eliminating safety hazards.
- Stable operation: Independent of power supply and line voltage, free from external interference and voltage fluctuation, ensuring stable protection performance in complex power grid environments.
Key Technical Parameters
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Parameter
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Details
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|---|---|
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Mode
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Electro-magnetic type, electronic type
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Residual current characteristics
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A, AC
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Pole No
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2P, 4P
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|
Rated making and breaking capacity
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500A (In=25A,40A) or 10InA (In=63A,80A,100A,125A)
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Rated current (A)
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25, 40, 63
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|
Rated voltage
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AC 230(240)/400(415)
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Rated frequency
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50/60Hz
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Rated residual operating current I△n (A)
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0.03, 0.1, 0.3, 0.5
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Rated residual non operating current I△no
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0.5I△n
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|
Rated conditional short-circuit current Inc
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10kA
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|
Rated conditional residual short-circuit Current I△c
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10kA
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Tripping duration
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instantaneous tripping ≤0.3s (0.1)
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Residual tripping current range
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0.5I△n~I△n
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Electro-mechanical endurance
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4000 cycles
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Connection capacity
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Rigid conductor 25mm²
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Terminal Connection Height
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21mm
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Connection terminal
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Pillar terminal with clamp
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Fastening torque
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2.0Nm
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Installation
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On symmetrical DIN rail 35.5mm/Panel mounting
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Protection class
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IP20
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Wide Application Scenarios of CJL3-63 (ID Model) RCCB
With comprehensive protection functions, stable performance and high safety, the CJL3-63 (ID model) RCCB, as a high-quality Circuit Breaker Rcd product, is widely used in various low-voltage electrical scenarios that require high safety protection, including:
- Residential scenarios: Installed in household distribution boxes, used for protection of branch circuits such as bedrooms, living rooms, kitchens and bathrooms. It can effectively prevent electric shock accidents caused by leakage of electrical appliances (such as water heaters, washing machines) and fire hazards caused by wire aging.
- Commercial and office buildings: Shopping malls, office buildings, hotels and other places. It is used for protection of lighting circuits, socket circuits, air conditioning circuits and office equipment circuits to ensure the safety of public electrical use.
- Public places: Schools, kindergartens, hospitals, elderly care institutions and other places with dense personnel. The high-sensitivity leakage protection can maximize the safety of vulnerable groups such as children and the elderly.
- Industrial workshops: Small and medium-sized factories, workshops and other industrial sites. It is used for protection of auxiliary electrical circuits, lighting circuits and small power equipment circuits to prevent electric shock accidents of operators and equipment damage caused by leakage.
- Medical and health institutions: Clinics, community health service centers and other places. It provides reliable electrical safety protection for medical equipment and ensures the normal operation of medical work.
- Other scenarios: Electrical distribution systems of rural power grids, temporary construction sites and other places that require mobile or temporary electrical protection.
Why Choose C&J Electrical’s CJL3-63 (ID Model) RCCB?
In the field of Circuit Breaker Rcd, the CJL3-63 (ID model) RCCB from C&J Electrical has obvious competitive advantages, becoming the preferred choice for customers who pursue high safety and stable performance:
- Comprehensive and reliable protection: Integrates leakage, overload, short-circuit and isolation protection functions, forming an all-round safety barrier for electrical circuits.
- Excellent structural design: Fire-resistant plastic parts, finger-protected terminals and intuitive status indication, which are humanized and safe.
- Stable operation under complex conditions: Independent of power supply and line voltage, not affected by external interference and voltage fluctuation, ensuring consistent protection performance.
- Wide adaptability: Multiple models (electromagnetic type, electronic type), pole numbers (2P, 4P) and residual current sensitivity specifications optional, adapting to different application scenarios and load requirements.
- Customizable services: Supports OEM/ODM brand customization services, which can be tailored according to customer needs to meet the personalized requirements of different market segments.
- Professional quality assurance: C&J Electrical has strict quality control standards, and the product has passed multiple authoritative tests, ensuring long-term stable operation and reliable after-sales service.
Get in Touch
If you have any questions about the CJL3-63 (ID model) RCCB (Circuit Breaker Rcd), such as product specifications, technical details, customization needs, or bulk orders, please feel free to contact C&J Electrical. Our professional team will provide you with tailored electrical safety protection solutions and high-quality after-sales services to ensure the safe and stable operation of your electrical system.
Post time: Jan-15-2026