China OEM Manufacturer for High-Sensitivity Residual Current Circuit Breaker
As a professional manufacturer in China, XENHO would like to provide you quality RCCBs (Residual Current Circuit Breakers), which are primarily used to detect residual current in circuits. They quickly disconnect the power supply in case of faults such as electric shock, equipment leakage, or damaged insulation, preventing electric shock accidents and electrical fires. XENHO RCCBs are standardized and classified according to the number of poles, operating type, residual current characteristics, installation method, and functional expansion to meet the safety requirements of different scenarios such as residential, commercial, and industrial applications.
What is a Residual Current Circuit Breaker?
A Residual Current Circuit Breaker is a specialized protective switch designed specifically to "prevent leakage and ensure safety." It continuously monitors the circuit for leakage currents; should a risk of electric shock, equipment leakage, or insulation damage arise, it automatically cuts off the power supply within a fraction of a second—thereby nipping the danger in the bud before it can cause harm.
Product Types
| Classification | Category | Key Characteristics / Suitable Applications |
| Number of Poles | 1P | Disconnects phase only; compact & low-cost; for simple residential circuits. |
| 1P+N | Disconnects L+N (N no breaking capacity); mainstream choice for households. | |
| 2P | Disconnects L+N (both have breaking capacity); for residential mains & small industry. | |
| 3P | Disconnects 3-phase wires; for industrial motors & three-phase loads. | |
| 4P | Disconnects 3-phase + neutral; for commercial buildings & high-security mains. | |
| Action Time | Instantaneous | No delay, trips in ≤0.1 sec; for personal shock protection in homes. |
| Time-Delayed (S-Type) | Short delay for selective coordination; for graded protection in distribution systems. | |
| Residual Current Type | AC Type | Sinusoidal AC residual current; for general lighting, sockets & resistive loads. |
| A Type | AC + pulsating DC; for electronic equipment (inverters, TVs, LED drivers). | |
| F / B Type | AC, pulsating DC & smoothed DC (Type B); for PV systems, charging piles & industrial automation. | |
| Installation Method | DIN Rail Mounted | Standard 35mm rail mounting; mainstream type for distribution boxes/cabinets. |
| Wall-Mounted/Fixed | Direct fixing to walls/equipment; for outdoor, temporary supply & industrial use. | |
| Functional Extension | Pure Leakage RCCB | Leakage protection only; supplements existing breakers. |
| RCBO | RCCB + MCB (leakage, overload & short circuit); all-in-one for modern residences. |
Application Recommendations
Residential/Consumer: Prioritize 2P/1P+N, AC type or A type, instantaneous type, RCBO
Commercial/Building: Recommend 4P, A type, S-delay type for graded protection
Industrial/New Energy: Select B type, 4P, time-delay selective protection
FAQ
Q1: What is the difference between an RCCB and an RCBO?
A1: An RCCB provides protection solely against earth leakage, whereas an RCBO offers comprehensive protection covering earth leakage, overload, and short circuits.
Q2: Which type is best suited for home use?
A2: We recommend a 1P+N or 2P configuration, either Type A or Type AC, with instantaneous tripping characteristics.
Q3: Is Type B mandatory for new energy systems?
A3: Yes. For applications involving DC components (such as photovoltaic systems or EV charging stations), using a Type B device is recommended for enhanced safety.
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AC Type 4P Residual Current Circuit Breaker RCCB
XENHO is a professional manufacturer specializing in the R&D and manufacturing of high-end electrical equipment in China, dedicated to providing safe and reliable power solutions for the global industrial, commercial, and infrastructure sectors. Our AC Type 4P Residual Current Circuit Breaker RCCB—distinguished by its exceptional breaking capacity, stable overload protection performance, and intelligent control technology—is ideally suited for the protection of main distribution lines and for integration with critical equipment.
A Type 2P RCCB
XENHO is a professional China manufacturer of A Type 2P RCCB with ±5% action accuracy, better than industry ±10%. This factory product uses nano insulation, 15kA breaking capacity, 6kV surge resistance. As a reliable supplier, we provide self test module, IP40 packaging, strong EMC, and long life for medical, data center, and industrial use.
AC Type 2P RCCB
As a trusted manufacturer and supplier in China, XENHO factory specializes in advanced electrical protection solutions. The AC Type 2P RCCB is engineered with high-sensitivity leakage detection and fast tripping performance, ensuring reliable protection against electric shock and fire hazards. Designed for global markets, this product combines stable performance, long service life, and compliance with IEC standards.
XENHO as a professional manufacturer and supplier of quality Residual Current Circuit Breaker in China. With our own factory, we provide customized services and look forward to partnering with you.
