JCB3-80M MCB Enhances Circuit Protection in Modern Electrical Systems

The JCB3-80M Miniature Circuit Breaker delivers critical 6kA high breaking capacity, short-circuit and overload protection for domestic, commercial, and industrial applications, featuring multiple tripping curves and robust safety compliance.

Miniature Circuit Breakers (MCBs) are fundamental safety components in electrical installations, designed to automatically disconnect circuits during abnormal conditions. Unlike traditional fuses, MCBs offer reusable protection and precise tripping characteristics. The JCB3-80M MCB, rated at 6kA breaking capacity, exemplifies modern advancements in this essential technology, providing reliable safeguarding for diverse electrical networks.

This specific MCB model offers comprehensive short-circuit and overload protection, a critical function for preventing equipment damage, electrical fires, and ensuring personnel safety. Beyond basic protection, it incorporates vital operational features. It functions effectively as a manual switch for circuit control and provides safe isolation during maintenance, a mandatory safety requirement in electrical work. A clear contact indicator visually confirms the circuit status (open/closed), enhancing operational safety and troubleshooting efficiency.

The JCB3-80M boasts significant versatility through its available B, C, and D tripping curves. These curves define the MCB’s response time to over currents, tailoring its protection to specific load types:

B curve (3-5 In): Optimized for protecting people and long cable runs, particularly in TN and IT earthing systems, where lower fault currents might occur.

C curve (5-10 In): The standard choice for general circuits, suitable for resistive and inductive loads exhibiting low inrush currents, such as lighting, general sockets, and small motors.

D curve (10-14 In): Engineered for circuits powering loads with high inrush currents at startup, commonly found in LV/LV transformers, large motors, welding equipment, and certain discharge lighting systems. This curve prevents nuisance tripping during normal equipment energization.

Engineered to comply with the international safety standard IEC 60898-1, the JCB3-80M guarantees consistent performance and safety benchmarks for circuit-breakers in low-voltage installations. Its breaking capacity of up to 6kA signifies its ability to safely interrupt fault currents up to 6000 Amperes, a crucial factor determined by the prospective short-circuit current at the installation point. Ensuring this device is correctly rated for the network’s fault level is paramount for effective protection. The recommended installation torque of 2.5 N.m further ensures secure and reliable electrical connections, minimizing the risk of overheating at the terminals.

The application scope of the JCB3-80M MCB is broad, reflecting its robust design and protective capabilities. It is ideally suited for domestic installations, safeguarding homes against electrical faults. Furthermore, it finds extensive use in commercial electrical distribution systems, protecting offices, retail spaces, and public buildings. Its robustness also makes it a reliable component within industrial electrical distribution systems, where demanding loads and higher fault levels are common.

Our own manufacturing facility ensures strict quality control, competitive pricing, and rapid delivery.Equipped with state-of-the-art production machinery and a team of specialized engineers, we guarantee products featuring high performance, durability, and full compliance with international standards (IEC/EN, etc.).Through in-house production, we offer customized solutions tailored to your specific product appearance requirements.

We invite you to partner with us in establishing an efficient, quality-driven, and trusted collaboration.