Low-voltage electrical safety protection is the core foundation of stable operation for residential, commercial and industrial power distribution systems. When designing circuit protection schemes, electrical installers and engineers often confuse RCCB and Rcbo Residual Circuit Breaker, two common residual current protection devices. Clarifying the core differences between them is critical for accurate selection and standardized electrical installation.
An RCCB (Residual Current Circuit Breaker) detects earth leakage and protects against electric shocks, but it requires a separate MCB (Miniature Circuit Breaker) to guard against overloads and short circuits. An RCBO (Residual Current Circuit Breaker with Overcurrent) is an all-in-one device that protects against all three hazards.
Simply put, ordinary RCCB only provides single leakage and electric shock protection, which must be used with MCB to form a complete circuit protection system. As a professional integrated Rcbo Protection Device, Rcbo Circuit Breaker integrates residual current, overload and short-circuit protection functions in one unit. It can independently undertake full-circuit safety protection, saving installation space and simplifying circuit design, making it the mainstream preferred device for modern high-standard power distribution systems.
Zhejiang C&J Electrical co., ltd. (referred to as C&J Electrical) launches the CJRO5-80 series high-performance Rcbo Residual Circuit Breaker. Complying with IEC61009-1 international standards, this product features adjustable leakage current, dual-pole full protection, compact structure and high breaking capacity. With rich specification options and strong environmental adaptability, it fully meets the high-precision safety protection needs of various complex power distribution scenarios.
Core Differences Between RCCB and Rcbo Circuit Breaker
To help users accurately select protective devices, we summarize the essential differences between RCCB and Rcbo Protection Device in terms of functions, installation and application:
- Protection Function: RCCB only supports earth leakage and electric shock protection, lacking overload and short-circuit protection. CJRO5-80 Rcbo Residual Circuit Breaker integrates three core protections: residual current, overload and short circuit, realizing full-dimensional circuit safety protection.
- Installation Matching: RCCB cannot be used alone and must be matched with MCB, resulting in complex circuit layout. The integrated Rcbo Circuit Breaker can be installed and used independently, simplifying cabinet wiring and saving installation space.
- Operation Stability: The combined installation of RCCB and MCB may have matching adaptation problems. The integrated structural design of RCBO avoids matching errors, with more accurate tripping action and lower failure rate.
- Scenario Adaptability: RCCB is only suitable for simple low-load circuits. The multi-functional and adjustable CJRO5-80 Rcbo Protection Device adapts to household, commercial, industrial and other diversified complex power distribution scenarios.
C&J Electrical CJRO5-80 Rcbo Residual Circuit Breaker Product Overview
CJRO5-80 series Rcbo Circuit Breaker is a high-performance integrated residual current overcurrent protection device developed by C&J Electrical in accordance with IEC61009-1 international standards. The product supports 2P and 4P pole specifications, with a frame current of 80A and a rated current range of 6A to 80A. It covers multiple leakage current specifications and AC/A-type leakage tripping modes, adapting to global mainstream 230V/400V AC power distribution systems.
This Rcbo Protection Device breaks the functional limitations of traditional single protection products. It supports detachable leakage function and adjustable rated leakage operating current, and both L and N poles are equipped with complete overload protection functions. Equipped with a current-limiting contact system and high-strength flame-retardant shell materials, the product effectively avoids short-circuit current impact damage to equipment, extends circuit service life, and maintains stable and reliable operation in complex temperature and humidity environments.
Core Product Advantages & Functional Features
- Flexible Leakage Function Design: The leakage function can be withdrawn according to actual needs, adapting to the protection requirements of different occasions and realizing flexible switching of protection modes.
- Adjustable Leakage Sensitivity: Supports adjustable rated leakage operating current, covering 10mA to 200mA multiple gears, which can be accurately matched according to on-site circuit load and safety standards.
- Dual-Pole Full Overload Protection: Both L pole and N pole are equipped with independent overload protection functions, avoiding single-pole protection loopholes and improving overall circuit safety.
- Ultra-Compact Structure: Beautiful appearance and small size, with a single-unit width of only 36mm, which greatly saves the internal space of the distribution box and is convenient for intensive wiring installation.
- High Breaking Capacity & Strong Practicability: The rated breaking capacity reaches 6kA, with complete and practical supporting accessories, which can cope with instantaneous short-circuit fault current and ensure rapid and safe fault breaking.
- High-Safety Terminal Design: Adopts touch-proof combined terminals, with red and green safety status indicators, which can intuitively judge the working state and effectively avoid electric shock risks during operation and maintenance.
- Current-Limiting Protection System: The built-in current-limiting contact system can suppress short-circuit current, reduce equipment impact damage, and extend the service life of circuits and electrical equipment.
- High-Strength Flame-Retardant Material: The shell and core functional parts are made of high-quality imported and exported V-0 grade flame-retardant plastics, featuring high temperature resistance, impact resistance and anti-aging performance, adapting to harsh working conditions.
- Diversified Protection Functions: Integrates residual current, short circuit and overload protection. It has overload tripping window indication and leakage locking functions, which can effectively prevent misoperation and missing protection.
Complete Technical Parameters
CJRO5-80 series Rcbo Residual Circuit Breaker has standardized and complete technical indicators with rich specification gradients to meet differentiated engineering selection needs:
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Technical Items
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Specifications
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Executive Standard
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IEC61009-1
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Pole Number
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2P / 4P
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Frame Rated Current
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80A
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Rated Working Voltage
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230V / 400V
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Rated Current Range
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6A~80A
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Rated Residual Operating Current
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10mA / 15mA / 30mA / 50mA / 100mA / 200mA
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Leakage Tripping Type
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A type / AC type
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Rated Insulation Voltage
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500V
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Rated Impulse Withstand Voltage
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4kV
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Breaking Capacity
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6kA
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Mechanical/Electrical Life
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20000 cycles / 10000 cycles
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Curve Type
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B / C / D
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Connection Capacity
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1~35mm² rigid conductor
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Working Temperature Range
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-30°C ~ +70°C
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Installation Method
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Standard DIN Rail
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Application Scenarios
With integrated multi-protection, flexible adjustment, compact size and high safety performance, CJRO5-80 Rcbo Circuit Breaker covers full-scenario low-voltage power distribution protection needs:
- Residential Power Distribution: Suitable for household socket circuits, kitchen and bathroom humid environment circuits, household main gate and high-power electrical equipment circuits, providing comprehensive leakage, overload and short-circuit protection for household electricity.
- Commercial Building Engineering: Applied to office buildings, shopping malls, hotels and other commercial power distribution systems, adapting to dense wiring and multi-load operation scenarios to ensure stable commercial power consumption.
- Industrial Auxiliary Circuits: Used for factory workshop lighting, small and medium-sized mechanical equipment, auxiliary control circuits, with strong temperature and humidity resistance, adapting to long-term continuous operation of industrial circuits.
- Public Infrastructure: Suitable for schools, hospitals, municipal engineering and other public power consumption scenarios, meeting high-standard safety protection requirements for public power distribution.
- Special Scenario Protection: Thanks to adjustable leakage sensitivity and detachable leakage function, it can adapt to special electrical environments such as old circuit renovation and precision equipment power supply protection.
Product Services & Supply Advantages
CJRO5-80 series Rcbo Protection Device has outstanding comprehensive performance, with diversified specifications, adjustable parameters and wide scenario adaptability. The all-in-one integrated design effectively reduces installation and maintenance costs, and the high-strength material and current-limiting structure ensure long-term stable operation of the equipment.
C&J Electrical provides comprehensive supporting services for this product, supporting OEM/ODM brand customization to meet personalized product and solution needs of global customers. Our company has a complete low-voltage electrical product line, including ACB frame circuit breakers and other supporting products, and supports SKD loose parts delivery. If you have any questions about product selection, parameter adjustment, engineering adaptation and customized cooperation, please feel free to contact us for professional technical support.
Contact Us
In conclusion, compared with single-protection RCCB, Rcbo Residual Circuit Breaker represented by CJRO5-80 series has obvious advantages in functional integrity, installation convenience and operation safety. It is a high-quality upgraded product for modern low-voltage power distribution safety protection.
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-20-2026