Why Choose Us
Business philosophy
The company always adheres to the business philosophy of "survive by quality, develop by technology, and achieve efficiency by management", and meets the current and future needs of customers with high-quality electrical products and services.
Rich industry experience
The company has been continuously upgraded through diversified sales products and services over the years, and has been praised by the majority of users! And enjoy a good reputation and credibility among consumers, and with a number of supporting manufacturers and agents to establish long-term stable cooperative relations.
24-Hour Service
Our dedicated 24-hour online support ensures prompt responses, providing you with an excellent shopping experience. Feel free to reach out with any questions at any time.
Fast delivery time
We have optimized production processes and supply chain management to achieve fast delivery times. With our advanced production scheduling system, we are able to accurately predict production cycles and respond quickly to order needs.
Current Limiting Circuit Breaker
Rated Current (In A): Depending on application requirements, the rated current of the Current Limiting Circuit Breaker varies, ranging from 16A to 630A.
Designed to limit the peak value of short-circuit current by swiftly breaking the circuit when a short circuit occurs. This type of circuit breaker can interrupt the circuit rapidly before the short-circuit current reaches its peak, thereby preventing damage to electrical equipment and reducing fire risks.
Rccb Residual Current Circuit Breaker
RCCB primarily monitors the difference between the loop current and the leakage current to automatically cut off the current when leakage is detected.
Residual Current Operated Circuit Breaker
The primary leakage protection system is suitable for places with high requirements for personal safety, such as residences, hospitals, and schools.
Definition: RCCB is short for residual current operated circuit breaker, which includes a short-circuit protection function, similar to an MCB (Miniature Circuit Breaker).
What is Residual Current Breaker
A Residual Current Circuit Breaker (RCCB) is an electrical safety device that monitors the balance of live and neutral currents in a circuit and can automatically disconnect the circuit if it detects a leak or imbalance. RCCBs are designed to protect people from electric shocks, electrocution, and fire hazards.
Benefits of installing an Residual Current Breaker
Protects you from electric shock: When the Residual Current Breaker detects that the current flowing back to the neutral conductor is less than the current flowing through the live conductor, it interrupts the power in less than a second, protecting you from electric shock. Doing so can prevent death, injury, or health complications from electric shock.
Protection against electrical fires: Residual Current Breaker detect and isolate ground faults or short circuits, preventing electrical fires that may be caused by arcing, burning wires, or faulty equipment. This device can save lives and property by preventing fires.
Energy Savings: Residual Current Breaker reduce energy waste by automatically shutting off power when a fault is detected. Energy waste is common in electrical installations, especially when electrical equipment is left unused or plugged in when not needed.
Save money: By reducing energy waste, Residual Current Breaker can save you money on your electricity bills. You'll notice a reduction in your monthly electric bill as this appliance keeps your home safe and saves energy.
Reliability: Residual Current Breaker are reliable safety devices that can detect electrical faults and react quickly. These devices have a high tripping accuracy within 30 milliseconds, making them an essential safety element in electrical installations.
Residual current circuit breakers (RCCBs) are an essential component of modern electrical installations. They are designed to protect people from electric shocks and prevent electrical fires by detecting and interrupting faults in the electrical system.
●Residual Current Breaker are designed to detect small currents, as low as 5 milliamps (mA), and interrupt the power supply within 30 milliseconds. This is important because currents as low as 10 mA can cause muscular contractions and prevent a person from letting go of an electrical hazard.
●Residual Current Breaker are installed at the origin of the circuit, usually in the main distribution board or the consumer unit. This allows them to protect the entire circuit downstream from the Residual Current Breaker.
●Residual Current Breaker work by comparing the current flowing through the live and neutral wires of a circuit. If the current flowing through the live wire is higher than that flowing through the neutral wire, it indicates that some of the current is flowing through an unintended path, such as a person's body. The Residual Current Breaker will then trip and interrupt the circuit.
●Residual Current Breaker can be a valuable addition to any electrical circuit where there is a risk of electrical shock or fire. For example, they are commonly used in wet areas such as bathrooms, kitchens, and laundry rooms, where there is a higher risk of electric shock due to the presence of water.
●It is important to note that Residual Current Breaker are not a substitute for fuses or circuit breakers. Fuses and circuit breakers protect against overloads and short circuits, while RCCBs protect against electric shock and ground faults.
Maintenance And Testing Of Residual Current Circuit Breakers
Regular visual inspection of RCCBs is necessary to detect any signs of damage or wear and tear. Check for any cracks, corrosion, or other signs of physical damage. Ensure that the connections are tight and secure.
Regular cleaning of RCCBs is necessary to remove any dust, dirt, or other contaminants that may affect their performance. Use a soft brush or cloth to clean the device, taking care not to damage any of the components.
It is essential to conduct a trip test on RCCBs to ensure that they are functioning correctly. A trip test is conducted by pressing the test button on the RCCB, causing it to trip. This test ensures that the device can detect and respond to a fault or overload.
The earth loop impedance test determines the effectiveness of the earthing arrangement in the installation. This test ensures that the electrical installation is safe and that the RCCB can detect any fault currents.
The residual current test is conducted to ensure that the RCCB can detect and respond to a residual current. This test is important to ensure that the device can provide the required level of protection against electric shock and fire risks.
What Are The Main Features Of Residual Current Breaker
A residual current circuit breaker basically acts as a current sensor, cutting off any unbalanced current circuit anytime a problem arises. In essence, residual current circuit breakers are designed to protect people from electric shocks and electrocution. When it detects current escaping to the earth wire, it avoids mishaps by cutting off the main circuit in a split second. Additionally, it offers a defense against electrocution or electric shock brought on by direct touch. It is an apparatus with a mechanical switch and an integrated residual tripping feature. It only interrupts the circuit when there is an earth fault, this lowers the danger to human life.
If the fault is to earth, Residual Current Breaker can often handle a fault or residual current of 1 kA on their own. According to wiring regulations, other devices should be used in conjunction with Residual Current Breaker to give protection. The short circuit rating of Residual Current Breaker can be improved. All in all, the Residual Current Breaker breaker is designed to shield a person from the risk of electrocution, electrical shock, and fire brought on by ground faults or bad wiring. It is especially useful in situations for protection against earth.
Applications Of Residual Current Breaker
Residential Buildings
RCCBs are commonly installed in homes to ensure the safety of occupants by protecting against electrical shocks and ground faults. They are typically used in areas with higher risk, such as bathrooms, kitchens, and outdoor electrical installations.
Commercial and Industrial Facilities
RCCBs find extensive use in commercial establishments, including offices, retail stores, hotels, and industrial facilities. They provide enhanced protection for employees, customers, and valuable equipment by detecting and mitigating electrical faults.
Construction Sites
RCCBs are essential in temporary electrical installations, such as construction sites, where there is an increased risk of electrical hazards. They provide critical protection against ground faults and electrical shocks during the construction phase.
Electrical Equipment and Machinery
RCCBs are often integrated into electrical equipment and machinery to enhance safety and protect against electrical faults. They are commonly used in tools, appliances, and industrial equipment where sensitive electronic components are present.
When choosing a Residual Current Circuit Breaker (RCCB), consider the type suitable for your application, such as Type AC for general use or Type A for additional protection against pulsating DC currents. Ensure the RCCB's sensitivity matches the application requirements. During installation, follow these steps:
Turn Off Power
De-energize the circuit to ensure safety during installation.
Identify Live and Neutral Conductors
Properly identify and connect the live and neutral conductors to the RCCB.
Connect Load Conductors
Connect the load conductors to the RCCB's output terminals.
Test Operation
Test the RCCB to ensure proper functioning, including tripping at the specified residual current.
Secure and Seal
Secure the RCCB in the distribution board and seal the connections to prevent tampering. Always follow manufacturer guidelines and local electrical codes.
Selection Principle of Residual Current Breaker
Choose according to purpose of use and location of electrical equipment
●Protection against direct contact electric shock
Because direct contact with electric shock is harmful and has serious consequences, residual current circuit breakers with high sensitivity should be selected. For electric tools, mobile electrical equipment and temporary lines, residual current circuit breakers with action current of 30 mA and action time of 0.1s should be installed in the circuit.
If an electric shock is likely to cause secondary hurt (such as high-altitude operations), a residual current circuit breaker with an operating current of 15mA should be installed in the circuit. For electrical medical equipment in hospitals, a residual current circuit breaker with an operating current of 6mA should be installed.
●Indirect contact electrocution protection
Indirect contact electric shock in different places can cause different degrees of personal injury. Therefore, different residual current circuit breakers should be installed in different places. Residual current circuit breakers with high sensitivity are required in places with high hazards of easy electric shock. Electrical shock in wet places is much more dangerous than in dry places. Generally, residual current circuit breakers with action current of 15-30mA and action time of 0.1s should be installed. For electrical equipment in water, residual current circuit breaker with action current of 6-10mA and action time of US stage should be installed. For electrical equipment which the operator must stand on metal objects or in metal containers, as long as the voltage is higher than 24V, residual current circuit breakers with action current below 15mA and action time at US level should be installed. For fixed electrical equipment with 220V or 380V voltage, when the grounding resistance of the enclosure is below 500fZ, a residual current circuit breaker with action current of 30mA and action time of 0.19s can be installed on a single machine. For large electrical equipment with rated current above 100A or power supply circuit with several electrical equipment, residual current circuit breaker with action current of 50-100mA can be installed. For grounding resistance of electrical equipment below 1000fZ, residual current circuit breaker with action current of 200-500mA can be installed.
Choose based on the normal leakage current of the circuit and equipment
The action current of the residual current circuit breaker used by a single machine should be 4 times higher than that of the leakage current under normal operation of the equipment.
For the residual current circuit breaker used in branch line, the action current should be 2.5 times higher than the leakage current of the normal operation of the circuit, and 4 times higher than the leakage current of the electrical equipment with the largest leakage current in the circuit.
The action current of residual current circuit breaker for main line or general protection of the whole network should be 2.5 times higher than that of leakage current under normal operation of power grid.
Yueqing City, Zhejiang Province, Fangdouyan Industrial Zone. The company focuses on the field of high and low voltage electrical equipment industry, specializing in the production of universal circuit breaker series, plastic circuit breaker series, small circuit breaker series, AC contactor series, surge protector series, load isolation switch series, isolation knife switch series, control and protection switch series, double power automatic transfer switch series, high voltage components series and other products.
FAQ
Hot Tags: residual current breaker, China residual current breaker manufacturers, suppliers, factory, Dc Current Circuit Breaker, Mccb Circuit Breaker, Insulated Case Circuit Breaker, Residual Current Operated Circuit Breaker, acb intelligent frame circuit breaker, Abb Molded Case Circuit Breaker
