Eaton PKNM-6/1N/B/003-A RCBO, 6A, 1P+N, B-Curve, 30mA, Type A

The Eaton PKNM-6/1N/B/003-A is a professional-grade RCBO designed to integrate residual current protection and overcurrent protection into a single compact device. This 1P+N unit is engineered for a 6A rated current and features a B-curve tripping characteristic, making it highly effective for protecting electrical circuits against both short circuits and overload conditions. With a 30mA sensitivity rating and Type A functionality, it ensures reliable detection of AC and pulsating DC residual currents, enhancing safety in modern electrical systems.

Advantages

This combined circuit breaker offers significant space-saving benefits by replacing separate MCB and RCD components with a single modular unit. The Type A classification provides a higher level of protection compared to standard AC types, as it is capable of detecting residual currents even in circuits with electronic components or power supplies. Its robust construction ensures long-term operational reliability, while the clear status indication allows for quick identification of the circuit state, simplifying maintenance and troubleshooting in both residential and commercial environments.

Suitable for

• Residential electrical distribution boards
• Commercial office lighting and power circuits
• Protection of circuits with electronic equipment
• General purpose branch circuit protection

When it may not be suitable

This device is not suitable for high-current applications exceeding its 6A rating, as it will cause nuisance tripping. It is also not intended for use in DC-only systems or industrial environments requiring specialized high-frequency or B-type residual current protection.

Key specifications

• Rated current: 6A
• Configuration: 1P+N
• Tripping curve: B-curve
• Residual current sensitivity: 30mA
• Type: A

How to use

The Eaton RCBO is designed for DIN-rail mounting within a standard electrical distribution board. Installation should be performed by a qualified electrician in accordance with local electrical codes. The device is wired by connecting the incoming line and neutral conductors to the supply terminals and the outgoing load conductors to the load terminals. Once installed, the device can be manually switched on or off using the front toggle, and the integrated test button should be used periodically to verify the functionality of the residual current mechanism.

What to consider before purchase

• Ensure the 6A rating matches the load requirements of your circuit
• Verify that the distribution board has sufficient DIN-rail space
• Confirm that Type A protection meets the specific safety requirements of your connected equipment

Usage recommendations

Regularly press the test button on the device at least every six months to ensure the residual current tripping mechanism remains operational and free from mechanical sticking.