ABB FH202 AC-63/0.03 Residual Current Circuit Breaker, 2-Pole, 63A, 30mA, AC Type

The ABB FH202 AC-63/0.03 is a high-quality 2-pole residual current circuit breaker (RCCB) engineered to provide essential electrical safety in modern installations. This device is designed to detect and interrupt earth fault currents, effectively protecting users from the risk of electric shock and preventing potential damage to electrical equipment. With a robust construction and reliable performance, it serves as a critical component in maintaining the integrity of electrical circuits in both residential and commercial environments.

Advantages

This residual current circuit breaker offers a high level of operational reliability due to its instantaneous tripping mechanism, which ensures that the circuit is disconnected immediately upon the detection of a fault. Its AC type classification makes it suitable for standard alternating current applications where sinusoidal residual currents are present. The compact 2-pole design allows for efficient space utilization within distribution boards, while the 63A rated current and 30mA sensitivity provide a balanced approach to safety and operational continuity, minimizing the risk of nuisance tripping while maintaining high protection standards.

Suitable for

• Residential electrical distribution boards
• Commercial building electrical systems
• Protection of final circuits against earth leakage
• Enhancing safety in lighting and socket circuits

When it may not be suitable

This device is specifically designed for AC type applications and may not be suitable for circuits where DC components or high-frequency currents are present, as these can interfere with the tripping mechanism. It is also not intended for use in industrial environments requiring specific surge protection or specialized fault detection beyond standard earth leakage.

Key specifications

• Number of poles: 2
• Rated current: 63A
• Rated residual operating current: 30mA
• Type: AC
• Tripping mechanism: Instantaneous

How to use

The ABB FH202 should be installed by a qualified electrician within a standard DIN-rail distribution board. It is typically placed at the beginning of the circuit it is intended to protect. Ensure that the supply cables are securely connected to the input terminals and that the load cables are connected to the output terminals, following the wiring diagram provided on the device casing. Once installed, the device can be tested using the integrated test button to verify its mechanical functionality.

What to consider before purchase

• Verify that the rated current of 63A matches your circuit load requirements.
• Ensure the 30mA sensitivity is appropriate for the intended level of protection.
• Check that the installation environment is compatible with an AC type RCCB.
• Confirm that the available space in your distribution board accommodates a 2-pole device.

Usage recommendations

Regularly test the residual current circuit breaker using the built-in test button at least every six months to ensure the mechanical tripping mechanism remains operational and provides consistent safety protection.