Kanlux KRD10-4/40/30-B Residual Current Circuit Breaker 4P 40A 30mA Type B

The Kanlux KRD10-4/40/30-B is a high-performance 4-pole residual current circuit breaker (RCCB) engineered to provide advanced electrical safety in demanding environments. This device is specifically designed to detect and interrupt circuits in the event of leakage, offering robust protection against both AC and pulsating DC residual currents. By integrating this component into your electrical distribution system, you ensure a high level of safety for both personnel and equipment, effectively mitigating the risks associated with electrical faults.

The primary advantage of this Type B residual current circuit breaker lies in its sophisticated detection capabilities. Unlike standard Type AC or A devices, the Type B configuration is capable of identifying complex residual currents, including smooth DC components, which are increasingly common in modern electronic installations. Its reliable construction ensures consistent performance and long-term durability, making it an essential safety component for complex electrical networks that require comprehensive protection against diverse fault types.

Suitable for

• Industrial automation systems and machinery
• Photovoltaic (PV) installations and solar inverters
• Electric vehicle (EV) charging stations
• Variable frequency drives and motor control centers
• Commercial buildings with high concentrations of power electronics

This device may not be suitable for simple residential circuits that only require basic protection against standard AC leakage, as Type B breakers are specialized for more complex electrical environments. It is also not intended for use in circuits exceeding its rated current capacity of 40A or in applications where the specific fault current characteristics fall outside the scope of Type B protection standards.

Key specifications

• Number of poles: 4
• Rated current: 40A
• Rated residual operating current: 30mA
• Device type: Type B
• Application: AC and pulsating DC residual current protection

Installation of the Kanlux KRD10-4/40/30-B must be performed by a qualified electrician in accordance with local electrical codes and safety regulations. The device is designed for mounting on standard DIN rails within a distribution board. Ensure that all connections are tightened to the specified torque to prevent overheating and ensure optimal electrical contact. Once installed, the device should be tested using the integrated test button to verify its mechanical and electrical functionality.

What to consider before purchase

• Verify that the 40A rated current matches the requirements of your circuit load.
• Ensure the 30mA sensitivity is appropriate for the intended level of personnel protection.
• Confirm that your installation requires Type B protection for specific equipment like inverters or EV chargers.
• Check the available space in your distribution board for a 4-pole modular device.

Regular maintenance and periodic testing of the residual current circuit breaker are recommended to ensure continued operational safety. It is advised to perform a manual test using the test button at least every six months to confirm that the tripping mechanism remains fully functional.