Overcurrent circuit breaker, 3P+N, C characteristic, 40A, 6kA, AC | S203-C40NA 2CDS253103R0404

Electrical installation protection with ABB S203-C40NA circuit breaker

This three-pole circuit breaker with a connected neutral pole (3P+N) is a reliable protection for your electrical installation. Designed to protect against overloads and short circuits, it ensures safe use and long-term operation of devices. Characteristic C makes it ideal for circuits with devices generating inrush currents, such as motors or transformers.

The S203-C40NA circuit breaker with a rated current of 40A and a short-circuit breaking capacity of 6kA effectively protects the circuit against the effects of sudden overvoltages. The rated short-circuit breaking capacity Icn is 6kA at 400V, and Icu reaches 10kA at 400V and 20kA at 230V – guaranteeing its effectiveness in various conditions. DIN rail mounting with a width of 4 modules facilitates integration with existing electrical infrastructure.

• Versatile application: ideal for protecting lighting circuits, socket outlets and electrical devices in residential and commercial buildings.
• Characteristic C: provides optimal protection for devices generating inrush currents during start-up, minimizing the risk of unnecessary tripping.
• High short-circuit breaking capacity: guarantees effective disconnection of the circuit in the event of a short circuit, protecting the installation and devices from damage.
• Expandability: compatible with additional accessories, allowing you to customize functionality to individual needs.
• Safety confirmed by standards: meets the requirements of overvoltage category III and pollution degree 3, ensuring safe and reliable operation in difficult conditions.

This circuit breaker is designed to operate at temperatures from -25°C to +55°C and has a protection degree of IP20, which means protection against touching with a finger and solid objects larger than 12.5 mm. The cross-section of solid conductors can be from 0.75 mm² to 35 mm², and stranded conductors from 0.75 mm² to 25 mm², providing great flexibility during installation. Power losses are 19.2W at a rated voltage of 400V and a frequency of 50-60Hz.