JCR3HM Residual current devices (RCDs) are designed to react quickly to any abnormal electrical activity and interrupt the current to prevent dangerous electric shock. These devices are critical to protecting commercial and residential electrical systems.
JCR3HM Residual Current Circuit breaker RCCBs are the safest device to detect and trip against electrical leakage currents, thus ensuring protection against electric shock caused by indirect contacts. These devices must be used in series with an MCB or fuse which protects them from the potentially damaging thermal and dynamic stresses of any over currents. They also act as the main disconnecting switches upstream of any derived MCBs (e.g. domestic consumer unit).
JCR3HM RCCB is an electrical safety device that cuts off the electricity supply immediately upon detecting leakages that may result in an electric shock.
The main function of our JCR3HM RCD is to monitor electrical current and detect any anomalies that may pose a risk to human safety. When a defect in an appliance is detected, the RCD reacts to the surge and immediately interrupts the current flow. This rapid response is critical to preventing potentially life-threatening electrical accidents.
JCR3HM RCD is a sensitive safety device that switches off electricity automatically if there is a fault. In a domestic environment, RCDs provide an extra layer of protection against electrical hazards. With the increasing use of appliances and devices in modern homes, the risk of electrical accidents increases. RCDs continuously monitor the flow of electricity and act as a safety net, giving homeowners and tenants peace of mind.
The JCR3HM RCD is designed to meet high safety standards and provides reliable protection against electric shock. Its advanced technology and precision make it an important component of electrical safety systems. The JCR3HM RCD quickly detects and responds to abnormal electrical activity, providing a level of protection unmatched by traditional circuit breakers and fuses.
2 Pole JCR3HM RCCB is used in case of a single-phase supply connection that has only a live and a neutral wire.
4 Pole JCR3HM RCD is is used in case of a three-phase supply connection.
● Electromagnetic type: This type of leakage current protector (RCD) uses electromagnetic technology to quickly detect abnormal electrical activity and interrupt current flow, providing rapid protection against electric shock and other electrical hazards.
● Leakage protection: RCD provides comprehensive leakage protection to ensure timely detection of any fault or leakage current and automatically disconnects the circuit to prevent potential electric shock hazards.
● Breaking capacity up to 6kA: RCD has a high breaking capacity up to 6kA, which can effectively handle and break high fault currents, enhancing the safety and reliability of electrical systems.
● Rated current up to 100A: The leakage protector has a variety of rated currents of 25A, 32A, 40A, 63A, 80A, and 100A to choose from to meet the requirements of various electrical systems.
● Trip Sensitivity: RCD offers 30mA, 100mA and 300mA trip sensitivity options, allowing customization based on specific safety needs and electrical environmental considerations.
● Type A or AC available: The availability of Type A or AC RCDs provides the flexibility to select the most appropriate type based on specific electrical system requirements and compatibility with different loads.
● Positive status indication contact: RCD is equipped with positive status indication contact, which can clearly and reliably indicate its operating status to enhance safety monitoring.
● 35mm DIN rail installation: RCD adopts 35mm DIN rail installation, which is easy and safe to install, ensuring efficient integration into electrical panels and enclosures.
● Installation flexibility with the choice of wiring from the top or bottom: The RCD provides installation flexibility with the choice of wiring from the top or bottom to meet different installation requirements and preferences.
● Comply with IEC 61008-1, EN61008-1: RCD complies with international standards IEC 61008-1 and EN61008-1, ensuring that strict safety and performance requirements are met, providing guarantee for its reliability and quality.
Technical Data
● Standard: IEC 61008-1, EN61008-1
●Type: electromagnetic
● Type (detected leakage waveform): A or AC to choose from
● Number of poles: 2 poles, 1P+N, 4 poles, 3P+N
● Rated current: 25A, 40A, 63A, 80A, 100A
● Rated working voltage: 110V, 230V, 240V (1P+N); 400V, 415V (3P+N)
● Rated sensitivity ln: 30mA. 100mA 300mA
● Rated breaking capacity: 6kA
● Insulation voltage: 500V
● Rated frequency: 50/60Hz
● Rated impulse withstand voltage (1.2/50): 6kV
● Pollution degree: 2
● Mechanical life: 2000 times
● Electrical life: 2000 times
● Protection level: IP20
●Ambient temperature (daily average s35°C): -5C+40C
● Contact position indicator: green = closed red = open
● Terminal connection type: cable/pin busbar
● Installation: Installed on DIN rail EN 60715 (35mm) through quick clamp device
● Recommended torque: 2.5Nm
●Connection method: top or bottom connection available
When expanding on the technical data, it is worth noting that the RCD complies with IEC 61008-1 and EN61008-1 standards, which ensures that it meets strict safety and performance requirements, thereby guaranteeing its reliability and quality. The availability of Type A and AC RCDs provides the flexibility to select the most appropriate type based on specific electrical system requirements and compatibility with different loads.
RCDs are available in a variety of pole configurations, including 2-pole, 1P+N, 4-pole and 3P+N, to meet different electrical system setups, ensuring compatibility and versatility. Additionally, a wide range of current ratings (from 25A to 100A) allows customization for specific electrical load requirements.
In addition, the RCD has an insulation voltage of 500V, a rated impulse withstand voltage of 6kV and a protection rating of IP20, highlighting its robust design and ability to withstand electrical stress and environmental conditions. Mechanical and electrical lifespan of 2000 cycles each ensures long-term reliability and performance.
The RCD's ambient temperature range of -5°C to +40°C, as well as its contact position indicator and terminal connection type options, further highlight its adaptability and suitability for a variety of installation environments and requirements. Mounting options and recommended torque specifications are provided to ensure easy installation and safe integration into electrical panels and enclosures.
What is a RCD?
A Residual Current Device (RCD) is an important electrical safety device designed to protect against the risk of electric shock and electrical fire. It is specifically designed to quickly cut off the current flow when it detects a ground leak that poses a potential danger to humans. RCDs provide fast and critical protection by interrupting current flow within 10 to 50 milliseconds of detecting a potential leak.
These devices continuously monitor the current flowing through one or more circuits, focusing primarily on measuring the live and neutral wires. When the RCD detects an imbalance in the current flowing through these wires, it immediately shuts down the circuit. This imbalance indicates the presence of unintended current paths, which can create significant hazards, such as personnel coming into contact with live wires or faulty appliances.
In residential settings, RCDs are often used in wet rooms and with all appliances to ensure the safety of the homeowner. Additionally, they are critical for protecting commercial and industrial equipment from electrical overstress, which can cause damage or lead to unnecessary electrical fires. The widespread use of RCDs in a variety of settings highlights their critical role in ensuring personal safety and protecting property from electrical hazards.
How Do You Test RCDs?
Testing the integrity of a Residual Current Device (RCD) is an important aspect of electrical safety maintenance. Regular testing is essential to ensure that the RCD operates effectively and provides the necessary protection against potential electrical hazards. For fixed RCDs and socket-outlets, testing should be carried out approximately every three months, while portable units should be tested every time they are used.
The test procedure consists of pressing the test button on the front of the RCD. The energy current in the circuit should be disconnected immediately after releasing the button. This action effectively simulates a ground leakage fault, allowing the RCD to demonstrate its ability to detect and respond to potential electrical hazards.
If the circuit does not close as expected after pressing the test button, this indicates a potential problem with the RCD. In this case, it is recommended to seek the expertise of a licensed electrician before using the circuit or equipment again. Consulting a professional electrician can ensure that any potential problems with the RCD are properly addressed to maintain a safe electrical environment. Regular testing and prompt resolution of any issues contributes to the overall safety and reliability of your electrical system.
How to connect the RCD – INSTALLATION DIAGRAM?
Specific rules need to be followed when connecting residual current devices (RCDs) to ensure proper functionality and safety. While the process is relatively simple, it's important to follow these guidelines. The RCD should not be used as the only protective element between the supply and the load, as it does not provide protection against short circuits or wire overheating. To improve safety, it is recommended to use a combination of leakage protectors and overcurrent circuit breakers, with each leakage protector equipped with at least one overcurrent circuit breaker.
In a single-phase circuit, the phase (brown) and neutral (blue) wires are connected to the RCD input. The protective conductor is usually connected using a terminal strip to ensure proper grounding and safety.
At the RCD output, the phase conductors should be connected to the overcurrent circuit breaker, while the neutral conductor can be connected directly to the device. This configuration ensures that the RCD and overcurrent circuit breaker work together to provide complete protection against electrical hazards, including ground fault and overcurrent conditions.
Following these guidelines during RCD installation will help ensure that the electrical system is properly protected and meets safety standards. Always consult a qualified electrician to ensure the RCD is installed correctly and in compliance with local regulations and best practices.