Acti9 C120N 4P 125 A D Curve 10000 A 10 kA Circuit Breaker

The Acti9 C120N 4P 125 A curve D circuit breaker by Schneider Electric is a robust and reliable solution for circuit protection in low-voltage industrial and commercial installations. This miniature circuit breaker (MCB) combines advanced protection against overloads and short circuits, with circuit control and isolation, ensuring a high level of safety and performance in alternating current electrical systems.

This 4-pole model offers comprehensive protection for all phase conductors, making it the ideal choice for applications where balanced protection in three-phase circuits is essential. With a rated current of 125 A, the circuit breaker is designed to operate in 380-415 V AC networks, making it suitable for a wide range of industrial, commercial, and infrastructure applications.

The curve D code of this circuit breaker makes it particularly suitable for protecting circuits that handle inductive loads with high current peaks, such as motors and transformers. This tripping curve allows the circuit breaker to better manage momentary current peaks without unnecessary tripping, ensuring greater operational continuity in installations.

The breaking capacity of this model reaches 10 kA at 380-415 V AC, ensuring safe disconnection in the event of a short circuit, protecting both equipment and installations from severe damage. Additionally, it complies with international standards IEC/EN 60898-1 and IEC/EN 60947-2, which regulate protection standards for both industrial and residential environments, ensuring a high level of reliability and compliance.

The Acti9 C120N is equipped with a thermal and magnetic tripping unit, providing dual protection: the thermal protection is adjustable and protects against prolonged overloads, while the magnetic protection responds immediately in case of a short circuit, minimizing the risk of failures and ensuring user safety.

This circuit breaker also includes advanced features that enhance operational safety, such as the green strip that indicates when the contacts are physically open, allowing operators to work safely on downstream circuits. Its modular design and ability to be mounted on a standard DIN rail make it easy to install in a variety of distribution boards.

The Acti9 C120N is also highly durable, with an electrical endurance of up to 5000 cycles and a mechanical endurance of up to 20000 cycles, ensuring a long service life under intensive use conditions. Additionally, it has excellent surge resistance capability, making it a reliable option for protecting sensitive and expensive equipment in demanding electrical environments.

In terms of design, this circuit breaker has a compact size (108 mm wide, 81 mm high, and 73 mm deep), allowing for space optimisation in distribution boards. Its IP20 protection rating at the terminals ensures that the contacts are protected against accidental contact, providing an additional level of safety. Furthermore, it is designed to operate over a wide temperature range, from -25°C to +70°C, making it suitable for use in a variety of environments and conditions.

In summary, the Acti9 C120N 4P 125 A curve D circuit breaker by Schneider Electric offers advanced protection against short circuits and overloads for industrial and commercial applications. With a breaking capacity of 10 kA, durable endurance, and an easy-to-install modular design, this circuit breaker is an ideal solution to ensure the safety and performance of low-voltage electrical systems.

• 4P 125A circuit breaker with a breaking capacity of 10 kA at 380-415 V AC, ideal for industrial and commercial applications.
• Curve D tripping, perfect for circuits with high inrush currents such as motors and transformers.
• Reliable protection against short circuits and overloads, with a prolonged service life of up to 20000 mechanical cycles.