Description
Description
TOB9L-63WIFI 2P can cut off L and N both,
With leakage protection, NO temperature control.
TOB9-63WIFI 1P Can only cut off L,
NO leakage protection, With temperature control.
TOB7L-63/4 4P 415V AC 40A/63A
AC Type, A Type, F Type, B Type
30mA, 100mA, 300mA
1.General
TOB7L-63 is a premium line of Electromagnetic Residual Current Circuit Breakers (RCCB) engineered to deliver uncompromising safety for industrial, commercial, and high-end residential electrical installations. Unlike voltage-dependent devices, the pure electromagnetic core ensures fail-safe operation, providing reliable earth leakage protection even in the event of a neutral fault, without requiring an auxiliary power supply.
2.Product features
Product Model:TOB7L-63
Product Type:Electromagnetic Residual Current Circuit Breaker (RCCB)
Standards Compliance:IEC 61008-1, GB/T 16916.1
Rated Current (In):40A, 63A
Rated Operational Voltage (Ue):230V AC (for 2P), 400V AC (for 4P)
Rated Residual Current (IΔn):30mA, 100mA, 300mA
Residual Current Type:AC Type, A Type, F Type, B Type (Selectable)
Tripping Principle:Electromagnetic (Voltage-Independent)
Electrical Link Option:Y-link, O-link
Mounting:DIN Rail
NOTE: This product is not RCBO. It does not have overload protection or short-circuit protection.














In today’s world, where electrical systems are an integral part of both residential and commercial environments, ensuring safety and reliability is of utmost importance. One of the most effective ways to protect electrical circuits and prevent hazards such as electric shocks and fire risks is by using a Residual Current Circuit Breaker (RCCB). The DIN Rail Electromagnetic Residual Current Circuit Breaker is a compact, high-performance device designed to offer superior protection in a wide range of applications. With its A/AC/B/F Type, 240V/415V, 30-300mA, and 40-63A specifications, this tomzn office Small Size circuit breaker is a versatile and reliable choice for modern electrical installations.
What is a Residual Current Circuit Breaker (RCCB)?
A Residual Current Circuit Breaker, also known as a Residual Current Device (RCD), is an essential safety component in electrical systems. It works by continuously monitoring the balance of current between the live and neutral conductors. If an imbalance is detected—typically due to a leakage current—the RCCB quickly disconnects the circuit to prevent electric shocks and potential damage to equipment.
The DIN Rail Electromagnetic Residual Current Circuit Breaker is specifically engineered to provide fast and accurate response times, making it ideal for environments where electrical safety is a top priority.
Key Features of the DIN Rail Electromagnetic RCCB
1. Compact and Space-Efficient Design
Designed with a small size, this tomzn office circuit breaker is perfect for installations where space is limited. Its DIN rail mounting allows for easy and secure installation in control panels and electrical cabinets. The compact form factor does not compromise on performance, making it a smart choice for both new and retrofit applications.
2. Multiple Trip Characteristics (A/AC/B/F Type)
This RCCB is available in A, AC, B, and F types, each designed to respond to different types of leakage currents. The A type is sensitive to both AC and pulsating DC currents, while the AC type is suitable for standard AC leakage. The B and F types are ideal for applications involving variable frequency drives and other specialized equipment. This versatility ensures that the device can be used in a wide range of industrial and commercial settings.
3. High Voltage and Current Ratings
With a voltage rating of 240V and 415V, this RCCB is suitable for both single-phase and three-phase electrical systems. It supports residual current settings from 30mA to 300mA, allowing users to choose the appropriate sensitivity level based on their specific application. The current rating ranges from 40A to 63A, making it suitable for a variety of electrical loads.
4. Electromagnetic Operation for Fast Response
Unlike traditional thermal-magnetic circuit breakers, this electromagnetic RCCB uses a highly sensitive electromagnetic mechanism to detect imbalances in current flow. This ensures a fast and reliable trip response, typically within 30 milliseconds, significantly reducing the risk of electric shock and equipment damage.
5. Durable and Long-Lasting Construction
Built to last, this RCCB is constructed with high-quality materials that ensure durability and long service life. It is designed to operate in a wide range of environmental conditions, making it suitable for both indoor and outdoor installations. The device is also resistant to dust, moisture, and temperature fluctuations, ensuring consistent performance over time.
Applications of the DIN Rail Electromagnetic RCCB
The DIN Rail Electromagnetic Residual Current Circuit Breaker is a versatile device that can be used in a wide range of applications, including:
– Industrial Control Panels: Protecting sensitive equipment and machinery from electrical faults.
– Commercial Buildings: Ensuring electrical safety in offices, retail spaces, and public facilities.
– Residential Installations: Providing protection in homes, especially in areas with high moisture levels such as bathrooms and kitchens.
– HVAC Systems: Safeguarding heating, ventilation, and air conditioning units from electrical faults.
– Lighting Systems: Preventing electrical hazards in lighting circuits and control systems.
Why Choose the tomzn Office Small Size RCCB?
The tomzn office small size DIN rail electromagnetic residual current circuit breaker is an excellent choice for anyone looking for a reliable, high-performance, and space-efficient solution for electrical protection. Its compact design, multiple trip types, and wide voltage and current ratings make it suitable for a variety of applications. Whether you are working on a new electrical installation or upgrading an existing system, this RCCB offers the safety and reliability you need.
Installation and Maintenance
Installing the DIN Rail Electromagnetic Residual Current Circuit Breaker is a straightforward process. The DIN rail mounting allows for easy and secure installation in control panels and electrical cabinets. It is important to follow the manufacturer’s guidelines and local electrical codes to ensure proper installation and operation.
Regular maintenance is essential to ensure the continued performance of the RCCB. This includes periodic testing of the trip function and visual inspection for signs of wear or damage. Most modern RCCBs come with a test button that allows users to manually test the device’s functionality.
Safety Standards and Certifications
The DIN Rail Electromagnetic Residual Current Circuit Breaker is designed to meet international safety and performance standards. It is built in accordance with IEC 60947-2 and IEC 60755, which specify the requirements for residual current operated protective devices. These standards ensure that the device provides reliable and consistent performance under various operating conditions.
Conclusion
In conclusion, the DIN Rail Electromagnetic Residual Current Circuit Breaker is a high-quality, reliable, and versatile solution for electrical safety. With its A/AC/B/F type, 240V/415V, 30-300mA, and 40-63A specifications, it is suitable for a wide range of applications. The tomzn office small size design makes it ideal for installations where space is at a premium. Whether you are an electrician, engineer, or facility manager, this RCCB offers the protection and performance you need to ensure the safety of your electrical systems.
Invest in the DIN Rail Electromagnetic Residual Current Circuit Breaker today and enjoy peace of mind knowing that your electrical circuits are protected by one of the most advanced and reliable devices available on the market.







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