SZ203-C63 circuit breaker, 3P, characteristic C, 63A, 6kA, AC 2CDS253025R0634

Reliable protection of electrical installations – 3P circuit breaker

This three-pole circuit breaker from ABB’s SZ203 series is a key element of every safe and reliable electrical installation. Designed to protect against overloads and short circuits, it provides peace of mind for both installers and end-users. It features a high short-circuit interrupting capacity of 6kA at 400V, guaranteeing an effective response in emergency situations.

Functionality and parameters tailored to your needs

The circuit breaker with a rated current of 63A and C characteristic is ideally suited for circuits with devices generating inrush currents during start-up, such as motors or transformers. The C characteristic allows for momentary exceeding of the rated current without unnecessary tripping, minimizing the risk of false alarms and downtime.

• Wide range of applications: ideal for protecting lighting circuits, socket outlets and electrical appliances in residential and commercial buildings.
• High resistance to environmental conditions: designed to operate in temperatures from -25°C to +55°C, ensuring reliability even in harsh conditions.
• Safety confirmed by standards: meets the requirements of overvoltage category III and pollution degree 2, guaranteeing safe use.
• Installation flexibility: possibility of connecting solid conductors with a cross-section from 0.75 mm² to 35 mm² and stranded conductors from 0.75 mm² to 25 mm², provides freedom in choosing the appropriate cables.
• Expandability: compatible with additional accessories, allowing you to customize functionality to individual installation needs.

Design and technical parameters for professionals

The SZ203-C63 circuit breaker has been designed with easy installation and intuitive operation in mind. The compact design (installation depth 69 mm) allows for saving space in the switchboard. The rated insulation voltage Ui is 440V, and the rated impulse withstand voltage Uimp is 4 kV – these parameters ensure high reliability and safety of the device. The energy limitation class is 3, which indicates the effectiveness of protection against the effects of short circuits. The device has a protection degree of IP20, which means protection against touching with a finger and solid objects larger than 12.5 mm.