Residual current circuit breaker 25A, 30mA, 2-pole, type A CDA225J

Safety and electrical installation protection

A 2P 25A/30mA Type A residual current circuit breaker (RCCB) is a key element ensuring safety in every electrical installation. Its task is to quickly disconnect the power supply in the event of a ground fault current, minimizing the risk of electric shock. This device effectively protects people and equipment from the effects of short circuits and overloads, acting as a reliable protective barrier.

This two-pole circuit breaker, with a rated current of 25A and a sensitivity of 30mA, is designed for use in AC (alternating current) circuits. Its Type A design provides effective protection against pulsating DC fault currents, which is particularly important in modern installations powering electronic devices. Mounting is on a DIN rail, which facilitates integration with the existing distribution board.

Functionality and characteristic features

The CDA225J circuit breaker stands out with a number of features that will be appreciated by both professional installers and end users:

• Fast response: 30mA sensitivity guarantees quick circuit disconnection in the event of a dangerous leakage current.
• Versatility: Suitable for operation with solid conductors with a cross-section of 1-25 mm² and stranded conductors 1-16 mm², ensuring compatibility with various types of installations.
• High reliability: Short-circuit strength at 6kA and impulse withstand voltage of 0.25kA demonstrate a solid construction and long-term operation.
• Compact dimensions: 2 module width allows for efficient use of space in the distribution board.
• Optical trip indicator: Allows quick identification of the cause of the disconnection – whether it was differential current or manual disconnection – which greatly facilitates fault diagnosis.
• Expandability: Compatibility with additional accessories allows you to customize the circuit breaker's functionality to individual needs.
• Compliance with standards: Ensures safe and compliant operation of the electrical installation.

Additionally, the circuit breaker is characterized by a protection degree of IP20, which provides protection against accidental contact. Operation in a wide range of ambient temperatures (-25°C to +40°C) enables its use in various environmental conditions. The rated impulse withstand voltage of 4kV increases the device's resistance to overvoltages.