Residual current circuit breaker 25A, 30mA, 4-pole, type A CDA425J

Residual Current Device – reliable installation protection

The 4-pole Residual Current Device (RCD) with a rated current of 25A and a tripping current of 30mA is a key element ensuring safety in every electrical installation. The device is designed to protect against electric shock and damage resulting from leakage and short-circuit currents. The CDA425J model from Hager is characterized by high reliability and meets stringent safety standards.

Product features and application

The RCD is designed for mounting on a DIN rail, which facilitates its installation and integration with existing distribution boards. Thanks to its four-pole design (3P+N), it provides comprehensive protection for three-phase circuits. Its main task is to quickly detect and disconnect the power supply in the event of a differential current, minimizing the risk of user injury and equipment damage. Type A application means that the RCD effectively responds to DC pulsed currents, which is particularly important in modern installations powering electronic devices.

• Wide application: ideal for securing circuits in residential, commercial and industrial buildings.
• DIN rail mounting: ensures easy and quick installation in standard distribution boards.
• Four-pole design (3P+N): comprehensive protection for three-phase circuits.
• Type A: effective protection against DC pulsed currents, typical of modern electronics.
• Rated current 25A: suitable for most standard loads.
• Sensitivity 30mA: ensures a quick response to dangerous leakage currents.

Advantages and technical parameters

The CDA425J RCD is distinguished by its solid construction and high technical parameters, guaranteeing long-lasting and trouble-free operation. The rated insulation voltage Ui is 500V, and the rated impulse withstand voltage Uimp is as high as 4kV, providing resistance to overvoltages. The short-circuit breaking capacity at 6kA guarantees effective protection against the effects of short circuits in the installation. Additionally, a wide operating temperature range (-25°C to +40°C) allows the RCD to be used in various environmental conditions.

This RCD is compatible with Hager vertical busbars, which further streamlines the installation and connection process in the distribution board. This allows installers to quickly and efficiently create safe and functional electrical systems. The RCD is characterized by a rated current of 25A, a rated differential current of 0.03A (30mA), has 4 poles and is of type A. Its rated voltage is 400V, insulation voltage Ui is 500V and impulse withstand voltage Uimp is 4kV. The short-circuit breaking capacity is 6kA and the width expressed in number of modules is 4. The operating temperature range is between -25°C and +40°C.