SZ203-B63 circuit breaker, 3P, B characteristic, 63A, 6kA, AC 2CDS253025R0635

Reliable protection of electrical installations with S203-B63 circuit breaker

This three-pole circuit breaker with B characteristic is a key element of every safe electrical installation. It provides effective protection against overloads and short circuits, minimizing the risk of damage and fire. It is an ideal solution for both installers and end-users who value reliability and safety.

The S203-B63 circuit breaker is designed to operate in AC systems, offering a rated current of 63A and a short-circuit breaking capacity of 6kA at voltages of 230V and 400V. The B characteristic makes it particularly suitable for circuits with devices with high inrush current – such as motors or transformers – allowing for short-term current exceeding without unnecessary tripping.

Solid construction and wide application

This circuit breaker is characterized by a compact design, occupying 3 modules on a DIN rail. Its housing with a protection degree of IP20 provides protection against contact and dust, increasing safety. The ability to use solid conductors with a cross-section of 0.75 to 35 mm² and stranded conductors from 0.75 to 25 mm² provides great flexibility during installation and connection. A wide operating temperature range (-25°C to +55°C) allows it to be used in various environmental conditions.

The rated impulse withstand voltage of 4kV guarantees resistance to overvoltage, and compliance with EN 60898 standard ensures a high level of safety and reliability. The circuit breaker has energy limitation class 3 and surge category III, which confirms its high quality and effectiveness. Additionally, the possibility of expanding with additional equipment increases the functionality of the device and allows it to be adapted to individual installation needs.