Residual current circuit breaker 3P+N 40A 30mA 10kA AC CDC640J

Residual Current Device – reliable installation protection

This three-pole residual current device (3P+N) with a rated current of 40A and a sensitivity of 30mA is a key element ensuring safety in every electrical installation. It provides effective protection against electric shock, protecting users and equipment. Its breaking capacity of 10kA (AC) guarantees a quick response in the event of a failure, minimizing the risk of damage.

Functionality and application

The AC type residual current device is designed to protect circuits against short circuits and leakage currents to earth. It will work both in domestic and industrial installations, protecting circuits with a conductor cross-section from 1 mm² to 25 mm² (solid core) and from 1 mm² to 16 mm² (stranded). DIN rail mounting simplifies integration with existing electrical infrastructure. The lock prevents accidental disconnection of the switch, increasing safety.

Key features and benefits

• High protection efficiency: 30mA sensitivity ensures fast detection of even small leakage currents, protecting against electric shock.
• High resistance to interference: Rated impulse withstand voltage Uimp at 4kV guarantees stable operation in difficult conditions.
• Wide operating temperature range: The ability to operate in a temperature range from -25°C to 70°C makes it suitable for indoor and outdoor applications (with appropriate housing).
• Solid construction: IP20 protection degree provides protection against finger contact and against the ingress of solid objects larger than 12.5 mm.
• Universal mounting: DIN rail mounting allows easy integration with existing switchboards.
• Compliance with standards: The product meets safety requirements, confirming its high quality and reliability.
• Lock: Additional lock prevents accidental disconnection of the switch during operation or maintenance of the installation.
• Adapted to work in various conditions: Short-circuit strength at 10kA ensures reliable operation even under high loads.