Eaton PKNM-10/1N/B/003 Residual Current Circuit Breaker with Overcurrent Protection, 2P, 10A, B-Curve, 30mA, Type AC

The Eaton PKNM-10/1N/B/003 is a high-quality combined residual current circuit breaker with overcurrent protection, commonly known as an RCBO. This compact 2-pole device integrates both circuit protection and leakage current detection into a single unit, ensuring efficient space management in electrical distribution boards. It is engineered to provide comprehensive safety for electrical circuits by monitoring for overloads, short circuits, and dangerous residual currents, making it an essential component for modern residential and commercial electrical installations.

Advantages

The primary benefit of this Eaton RCBO is its ability to combine two critical safety functions into one device, which significantly simplifies installation and saves valuable space within the consumer unit. By utilizing a B-curve tripping characteristic, it offers a balanced response to standard electrical loads, ensuring reliable operation without nuisance tripping. The 30mA sensitivity is specifically calibrated to provide life-saving protection against electric shock, while the robust construction ensures long-term durability and consistent performance under various operating conditions.

Suitable for

• Residential electrical distribution boards
• Commercial office lighting and power circuits
• Protection of individual final circuits
• General purpose electrical installations requiring leakage and overload protection

This device may not be suitable for industrial environments with high-frequency interference or specialized equipment that requires Type A or Type B residual current protection. It is also not intended for use in DC-heavy applications or circuits where high-inrush currents might cause nuisance tripping due to the B-curve characteristic.

Key specifications

• Rated current: 10A
• Number of poles: 2 (1P+N)
• Tripping characteristic: B-curve
• Residual current sensitivity: 30mA
• Residual current type: AC
• Mounting type: DIN rail

Installation should be performed by a qualified electrician in accordance with local electrical regulations. The device is designed to be mounted on a standard DIN rail within a distribution board. Ensure that the supply voltage matches the device specifications and that all connections are tightened to the manufacturer's recommended torque settings to prevent overheating. Once installed, the integrated test button should be pressed periodically to verify the mechanical functionality of the tripping mechanism.

What to consider before purchase

• Verify that the 10A rating is appropriate for the specific circuit load
• Ensure the distribution board has sufficient DIN rail space
• Confirm that the AC-type leakage protection meets local safety standards for your specific application
• Check compatibility with existing busbar systems

Regular maintenance and testing of the RCBO via the test button are recommended at least every six months to ensure continued operational safety and reliability.