Overcurrent circuit breaker, 3P+N, C characteristic, 20A, 6kA, AC | S203-C20NA 2CDS253103R0204

Electrical installation protection with ABB S203-C20NA 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 reliability. Characteristic C makes it ideal for circuits with devices generating surge currents, such as motors or transformers.

This circuit breaker, with a rated current of 20A and a short-circuit breaking capacity of 6kA, finds application in a wide range of electrical installations – both in residential and commercial buildings. Its compact size (4 modules wide) makes it easy to install in distribution boards.

Construction features and operating parameters

The S203-C20NA circuit breaker is made of high-quality materials, which guarantees its durability and resistance to environmental conditions. Adapted to operate at temperatures from -25°C to 55°C, it meets the requirements for safety and reliability. The rated insulation voltage Ui is 440V, and the rated voltage is 400V. Thanks to energy limitation class 3 and surge category 3, the circuit breaker effectively protects against the effects of disturbances in the electrical network. Protection degree IP20 provides protection against accidental contact.

The rated short-circuit breaking capacity Icn at 400V is 6kA, and Icu at 230V reaches even 20kA – which confirms its effectiveness in emergency situations. The circuit breaker is compatible with wires with a cross-section from 0.75 mm² to 35 mm² (solid) and from 0.75 mm² to 25 mm² (stranded). The possibility of mounting additional equipment increases its functionality and allows adaptation to individual installation needs.