Technical Specifications and Operational Features of Residual Current Device

JC3R-125 represents a crucial electrical safety device—a residual current device (RID). This electromagnetic device is designed to automatically disconnect the circuit when an imbalance of current between the live and neutral wires is detected, indicating a leakage current. The primary function of this RID is to rapidly cut off power in the event of a ground fault, preventing electric shock and reducing the risk of fire, making it an indispensable component of modern electrical installations in residential, commercial, and industrial settings.

This Residual Current Device is characterized by its robust performance specifications. It features a high breaking capacity of either 6kA or 10kA, enabling it to safely withstand and interrupt severe electrical faults. With a maximum rated current of 125A, it is suitable for protecting main circuits and sub-circuits with substantial electrical loads. The device is offered in both AC and A types; the AC type responds to sinusoidal alternating currents, while the more advanced A type can additionally detect pulsating DC residual currents, which are common in electronic equipment.

A key operational parameter of this Residual Current Device is its trip sensitivity, which is available in 30mA, 100mA, and 300mA ratings. The 30mA sensitivity provides critical personal protection against electric shock, while the 100mA and 300mA settings are typically employed for enhanced fire protection, safeguarding against insulation faults in electrical installations. This flexibility in sensitivity allows for selective coordination in complex electrical systems, ensuring that only the faulty circuit is disconnected without unnecessarily affecting the rest of the installation.

The JC3R-125 is designed with practical installation in mind. It offers both top and bottom connection options, allowing electricians flexible layout within distribution panels, optimizing wiring paths and saving space. This residual current device is designed for DIN rail mounting and conforms to standard panel configurations. Its construction ensures reliable operation in a wide range of environmental conditions common in electrical enclosures.

The JC3R-125 residual current device offers a comprehensive safety solution thanks to its electromagnetic operating principle, high breaking capacity, and configurable sensitivity options. Compliant with international standards IEC 61008-1 and EN 61008-1, it demonstrates compliance with stringent requirements for safety, performance, and durability. The JC3R-125 is a reliable choice for engineers and contractors seeking effective leakage protection in a variety of electrical systems.