ABB DSH201-B6-AC30 Residual Current Circuit Breaker with Overcurrent Protection, 2P, 6A, B-curve, 30mA, AC type, 6kA

The ABB DSH201-B6-AC30 is a high-performance residual current circuit breaker with overcurrent protection (RCBO), designed to provide comprehensive electrical safety in residential and commercial environments. This 2-pole device integrates both short-circuit and overload protection with earth fault current detection in a single compact unit, ensuring efficient space utilization in distribution boards.

Advantages

This RCBO offers superior reliability by combining two essential safety functions into one device, which simplifies installation and reduces the amount of wiring required. The B-curve tripping characteristic is specifically optimized for general loads, providing quick response times during fault conditions. Its robust construction ensures long-term operational stability, while the AC type leakage detection provides consistent protection against sinusoidal alternating residual currents, making it a dependable choice for standard electrical circuits.

Suitable for

• Residential electrical distribution boards
• Commercial office lighting and power circuits
• Protection of final circuits against overloads and short circuits
• Prevention of electric shock caused by indirect contact

When it may not be suitable

This device is not intended for use in circuits where DC components or pulsating DC residual currents are present, as it is specifically designed for AC type leakage detection. Furthermore, it should not be used in industrial applications requiring higher breaking capacities than 6kA or in environments with specialized equipment that may cause nuisance tripping due to high inrush currents.

Key specifications

• Number of poles: 2
• Rated current: 6A
• Tripping characteristic: B-curve
• Residual current sensitivity: 30mA
• Leakage type: AC
• Breaking capacity: 6kA

How to use

The device should be installed by a qualified electrician in accordance with local electrical regulations. It is mounted onto a standard DIN rail within an electrical distribution panel. Ensure that the supply cables are connected to the top terminals and the load cables to the bottom terminals, observing the correct polarity and torque settings specified by the manufacturer. 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 6A rated current matches the requirements of your specific circuit load.
• Ensure the 30mA sensitivity is appropriate for the intended level of personnel protection.
• Check that the 6kA breaking capacity is sufficient for the prospective short-circuit current at the installation point.
• Confirm that the circuit does not contain electronic equipment that generates DC leakage currents.

Usage recommendations

Regular maintenance and testing are essential for safety. It is recommended to perform a functional test using the integrated test button at least every six months to ensure the device remains in optimal working condition.