Eaton xPole Home HNB-B20/1N/003-A Residual Current Circuit Breaker with Overcurrent Protection, 2P, 20A, B-curve, 30mA, Type A

The Eaton xPole Home HNB-B20/1N/003-A is a high-quality residual current circuit breaker with overcurrent protection (RCBO), specifically engineered for residential electrical safety. This 2-pole device integrates both circuit protection and leakage detection into a single compact unit, making it an essential component for modern home distribution boards. It is designed to monitor electrical circuits for faults, providing reliable protection against short circuits, overloads, and dangerous residual currents.

Advantages

The primary benefit of this RCBO is its ability to combine two critical safety functions into one space-saving device, which simplifies installation and reduces the amount of wiring required in the consumer unit. By utilizing Type A sensitivity, the device offers enhanced protection against both AC and pulsating DC residual currents, which are increasingly common in modern households with electronic appliances. The B-curve tripping characteristic ensures a balanced response to standard domestic loads, preventing nuisance tripping while maintaining high safety standards for the electrical installation.

Suitable for

• Residential electrical distribution boards
• Protection of lighting and socket circuits
• Modern homes with electronic household appliances
• Renovation of existing electrical systems

When it may not be suitable

This device is not intended for industrial environments with high-power machinery or equipment that generates significant harmonic distortion. It is also not suitable for circuits requiring a different tripping curve, such as C or D, which are typically used for motors or high-inrush current loads.

Key specifications

• Rated current: 20A
• Tripping characteristic: B-curve
• Sensitivity: 30mA
• Type: A
• Number of poles: 2P

How to use

The installation of this RCBO must be performed by a qualified electrician in accordance with local electrical regulations. The device is designed for mounting on a standard DIN rail within a distribution board. Ensure that the supply cables are correctly connected to the input terminals and that the load circuits are securely attached to the output terminals. After installation, 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 20A rating matches the requirements of your specific circuit
• Ensure the distribution board has sufficient space for a 2-pole RCBO
• Confirm that Type A protection meets the safety requirements for your connected appliances

Usage recommendations

Regularly test the device using the test button at least twice a year to ensure the internal mechanism remains operational and provides consistent protection for your home electrical system.