Hager RCBO

Hager RCBOs are combined circuit protection devices designed to protect individual circuits against overloads, short circuits and earth leakage faults in a single unit.

By combining the functions of an MCB and an RCD, Hager RCBOs provide both circuit protection and protection against electric shock. Designed for use within Hager consumer units, they are widely used in modern installations where reliable, per-circuit protection is required.

A Hager MCB protects against overloads and short circuits only, helping to prevent damage to wiring and connected equipment. However, it does not provide protection against earth leakage faults or electric shock.

A Hager RCBO includes all the protection of an MCB, but also detects earth leakage faults and disconnects the circuit if a potentially dangerous current to earth is detected. This makes Hager RCBOs a more complete and higher-spec protection solution for modern consumer units.

Hager RCBOs provide individual protection for each circuit, meaning that if a fault occurs, only the affected circuit is disconnected. This reduces inconvenience, improves fault isolation and makes identifying issues much quicker and easier.

In contrast, RCD-based consumer units protect multiple circuits together, so a single fault can cause several circuits to trip at once. This can result in wider power loss and make fault finding more difficult, particularly in larger or more complex installations.

By using Hager RCBOs, each circuit operates independently, improving overall reliability and reducing nuisance tripping. This makes them a preferred choice in modern Hager consumer units, where performance, safety and ease of maintenance are key priorities.

Hager Type A RCBOs are designed to detect both standard AC residual currents and pulsating DC residual currents, providing a higher level of protection for modern electrical installations.

This capability is particularly important in today’s environments, where many electrical devices contain electronic components that can generate DC residual currents. Common examples include washing machines, LED lighting, induction hobs, computers and EV chargers. A Type A Hager RCBO can detect these fault conditions and disconnect the circuit if necessary, helping to prevent electric shock and potential hazards.

Compared to older Type AC devices, which only respond to pure AC faults, Hager Type A RCBOs offer improved safety and are better aligned with current wiring regulations. As a result, they are widely recommended for new installations and upgrades, ensuring compatibility with modern equipment and providing more comprehensive circuit protection.

The correct amp rating for a Hager RCBO depends on the circuit it is protecting and the design of the installation. Common examples include 6A for lighting circuits, 16A or 20A for smaller radial circuits, and 32A for socket outlets or ring circuits.

It is important to select the correct Hager RCBO based on cable size, load requirements and circuit design to ensure safe and compliant operation. Always follow relevant wiring regulations and consult a qualified electrician if you are unsure.

No. Hager RCBOs are specifically designed for use with Hager consumer units to ensure the correct fit, reliable performance and full compliance with manufacturer specifications.

Each Hager device is engineered to align precisely with Hager busbar systems and board layouts, which helps ensure secure connections and consistent electrical performance. Using matched components reduces the risk of poor connections, installation issues or non-compliance with wiring regulations.

While some devices from different brands may appear physically similar, mixing RCBOs with non-compatible consumer units is not recommended, as it can lead to incorrect fitting, reduced safety and potential warranty or compliance issues. For best results, Hager RCBOs should always be installed within compatible Hager boards to ensure safe, efficient and fully compliant operation.