Hager ADM475C RCBO 4P C 25A 30mA Type A 6kA

The Hager ADM475C is a high-performance 4-pole RCBO engineered to provide comprehensive electrical circuit protection in both residential and commercial environments. This device integrates the functions of a miniature circuit breaker and a residual current device into a single compact unit, effectively safeguarding electrical installations against overloads, short circuits, and dangerous earth leakage currents. Designed for reliability and safety, it operates seamlessly within 230-400V AC systems, ensuring consistent performance for modern electrical infrastructure.

Advantages

The primary benefit of the Hager ADM475C is its dual-functionality, which saves significant space in distribution boards by combining overcurrent and residual current protection. Its Type A sensitivity ensures detection of both alternating and pulsating direct residual currents, offering a higher level of safety compared to standard AC types. The robust 6kA short-circuit capacity provides dependable protection against high-energy faults, while the C-curve tripping characteristic allows for the safe startup of inductive loads, such as motors or lighting circuits, without nuisance tripping.

Suitable for

• Residential electrical distribution boards
• Commercial office building circuits
• Protection of lighting and power socket circuits
• Industrial applications requiring Type A residual current protection

This device may not be suitable for circuits where the load current consistently exceeds 25A, as this would lead to frequent nuisance tripping. It is also not intended for use in DC-only systems or environments where the specific tripping characteristics of a B or D curve are required for specialized equipment.

Key specifications

• Number of poles: 4
• Rated current: 25A
• Residual current sensitivity: 30mA
• Tripping characteristic: C-curve
• Short-circuit capacity: 6kA
• Residual current type: Type A
• Operating voltage: 230-400V AC

The device should be installed by a qualified electrician in accordance with local electrical regulations. It is mounted onto a standard DIN rail within a distribution board. Ensure that the supply cables are securely fastened to the terminals and that the wiring matches the circuit diagram provided on the device housing. After installation, the integrated test button should be pressed to verify the mechanical functionality of the residual current mechanism.

What to consider before purchase

• Verify that the 25A rating is appropriate for the total load of the circuit
• Ensure the 30mA sensitivity meets local safety requirements for personnel protection
• Confirm that the 4-pole configuration matches your distribution system
• Check that the 6kA breaking capacity is sufficient for the prospective short-circuit current at the installation point

It is recommended to perform a functional test using the integrated test button at least every six months to ensure the continued reliability of the residual current protection mechanism.