Residual Current Relay Hager CD226J 30 mA, 2×25 A

Hager CD226J is a residual current (leakage) relay designed to monitor earth leakage and provide disconnection of circuits when leakage current exceeds the rated residual operating current of 30 mA. The device provides two independently switched output channels rated at 25 A each, enabling controlled interruption of one or two circuits. Built for integration into residential and commercial electrical installations, this relay supports safety management by detecting hazardous leakage currents and triggering protective devices.

Advantages

The relay offers reliable leakage detection at a sensitivity of 30 mA and dual output channels for flexible load control. Compact design allows straightforward mounting in electrical distribution boards and integration with existing protective systems. The two 25 A outputs permit separation of critical loads or staged disconnection to reduce fault impact. The product is made by a recognized brand in electrical distribution equipment, ensuring consistent manufacturing standards and compatibility with common installation practices.

Suitable for

• Monitoring and disconnecting household circuits where earth leakage protection is required
• Protective control of individual loads in small commercial installations
• Integration into distribution boards for selective load shedding or fault isolation
• Upgrading existing installations with additional leakage detection and automatic disconnection

Key specifications

• Rated residual operating current: 30 mA
• Output channels: 2 switched outputs
• Rated current per output: 25 A
• Function: residual current (earth leakage) detection and disconnection
• Intended mounting: distribution board / switchgear integration

How to use

Install the residual current relay in the distribution board according to local electrical codes and the manufacturer’s installation instructions. Connect the supply and the two switched outputs to the circuits to be monitored, ensuring correct phase and neutral wiring and secure terminal connections. Configure any upstream protective devices and test the relay operation after installation by simulating a leakage condition or using the recommended test procedure. Regular functional checks should be performed as part of routine maintenance to verify correct operation.

Usage recommendations

Use the relay in installations with appropriate upstream overcurrent protection sized for the connected loads. Verify compatibility with the distribution board space and wiring cross-sections before installation. Schedule periodic testing and inspection to ensure the residual current detection remains effective and complies with local safety regulations.