Schneider Electric RKN4P Residual Current Circuit Breaker 4P 25A 0.3A Type A

The Schneider Electric RKN4P is a high-quality 4-pole residual current circuit breaker (RCCB) engineered to provide reliable electrical safety in various environments. This device is designed to detect and interrupt electrical circuits when a residual current is detected, effectively preventing electric shocks and mitigating fire hazards. As a Type A device, it offers comprehensive protection by responding to both alternating sinusoidal residual currents and pulsating direct residual currents, making it a versatile choice for modern electrical systems.

Advantages

This residual current circuit breaker stands out due to its robust construction and adherence to strict safety standards. By utilizing Type A technology, it ensures a higher level of security compared to standard AC-type breakers, as it can detect complex fault currents often found in modern electronic equipment. Its 4-pole configuration allows for seamless integration into three-phase electrical installations, providing balanced protection across all phases and the neutral line. The device is built for durability and consistent performance, ensuring long-term operational reliability in residential, commercial, and light industrial settings.

Suitable for

• Residential electrical distribution boards
• Commercial building power systems
• Protection of circuits with electronic components
• Installations requiring protection against AC and pulsating DC residual currents

This device is not suitable for direct current (DC) systems or circuits where the residual current exceeds the rated sensitivity threshold of 0.3A. It should not be used as a primary overload protection device, as it is specifically designed for leakage current detection and must be paired with appropriate miniature circuit breakers for overcurrent protection.

Key specifications

• Number of poles: 4
• Rated current: 25A
• Residual current sensitivity: 0.3A
• Type: A

The installation of this residual current circuit breaker should be performed by a qualified electrician in accordance with local electrical codes and regulations. The device is typically mounted on a standard DIN rail within an electrical distribution panel. Ensure that all wire connections are tightened to the manufacturer's specified torque to prevent overheating and ensure proper 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 25A rated current matches the requirements of your circuit
• Ensure the 0.3A sensitivity is appropriate for your specific safety application
• Confirm that your installation requires a 4-pole device for three-phase systems
• Check compatibility with your existing distribution board and DIN rail space

Regularly test the residual current circuit breaker using the built-in test button at least every six months to ensure the mechanism remains operational and provides continuous protection for your electrical installation.