A circuit breaker is a helpful device that prevents overload and short-circuit of electrical system. The circuit breakers protect against severe electrical shock or electrocution, mitigate the risk of electrical fires and protect against damaging surges and Voltage spikes.
The Miniature Circuit Breaker (RCB-40A) offers highly reliable circuit protection and is an indispensable component in residential, commercial, and industrial electrical systems. With its fast response time, durability, and compliance with international standards, the RCB-40A provides comprehensive protection for your electrical infrastructure, preventing potential electrical hazards and ensuring the stable operation of your power systems.
Product details
Description/Feature/Scope of Application
The Miniature Circuit Breaker (RCB-40A) is an essential protective device designed to prevent overload and short circuits in electrical systems. It effectively safeguards electrical equipment from damage caused by excessive current, preventing electrical fires and accidents. When the current exceeds the safe level, the RCB-40A automatically disconnects the circuit to protect the system. Compliant with the IEC60898 standard, this circuit breaker is suitable for residential, commercial, and industrial electrical systems, ensuring the safety and reliability of your electrical infrastructure.
High-Security Protection
The RCB-40A instantly disconnects the circuit when the current exceeds the preset safe level, protecting your electrical devices from overload, short circuits, and other dangerous conditions.
Fast Response Time
With an ultra-fast response, the circuit breaker reacts immediately to overloads and short circuits, ensuring prompt action to prevent electrical hazards.
Durable and Reliable
Manufactured using high-quality materials and precision engineering, the RCB-40A guarantees long-term reliability and durability, even in frequent use.
International Standard Compliance
Fully compliant with IEC60898, the RCB-40A meets global safety and performance standards, ensuring it performs optimally in various international electrical systems.
Multiple Protection Mechanisms
Provides overload protection, short circuit protection, and ground fault protection, offering comprehensive defense for your electrical system.
Compact Design
The small, space-saving design makes installation easy, even in confined spaces such as electrical panels or equipment enclosures, while still delivering high performance.
Wide Environmental Adaptability
Designed to operate in a wide range of temperatures and environmental conditions, the RCB-40A ensures stable performance in diverse working environments, suitable for both residential and industrial applications.
Residential Electrical Systems
Ideal for protecting home electrical distribution systems, preventing damage from overloads and short circuits, and reducing the risk of electrical fires.
Commercial Buildings
Used in commercial building electrical systems to protect equipment and installations from electrical faults, ensuring a safe and stable commercial environment.
Industrial Applications
Widely used in industrial equipment, factories, and production lines to safeguard against overloads and electrical failures, ensuring smooth and safe operations.
Automation and Control Systems
Perfect for electrical control and automation systems, providing protection for sensitive equipment and ensuring system reliability and longevity.
Power Generation and Distribution Systems
Essential for power generation, substation, and distribution systems, where it serves as a key protective device to prevent current anomalies from disrupting the power network.
Data Centers and Communication Equipment
Protects data centers, telecom equipment, and other precision electronics from power surges and fluctuations, ensuring the continuous operation of critical systems.
Dimensions

Technical Parameters
| Model | RCB |
| Rated Voltage (V) | AC230/400 |
| Rated Current (A) at ambient temperature 40℃ | 15A,20A,30A,40A,50A,60A,70A,100A |
| Breaking Capacity (A) | AC230/400V 1P 3KA; AC400V 2P,3P 3KA |
| Electrical Life (Times) | 4000 |
| Mechanical Life (Times) | 16000 |
| Number Of Poles | 1P,2P,3P |
| Color | Black |
| Material | Plastic |
| Power Source | Wired Electric |
