Overcurrent circuit breaker, 3P, C characteristic, 63A, 6kA, AC | S203-C63 2CDS253001R0634

Overcurrent circuit breaker – reliable protection for electrical installations

This three-pole overcurrent circuit breaker with C characteristic is a key element of every safe and efficient electrical installation. It provides effective protection against overloads and short circuits, minimizing the risk of damage and fire. Its compact size (3 module width) makes it easy to install in distribution boards, and its solid construction guarantees long-lasting and trouble-free operation.

This circuit breaker, with a rated current of 63A and a short-circuit interrupting capacity of 6kA, is perfect for both domestic, commercial and industrial installations. The C characteristic means a delayed tripping time in case of overloads, which is particularly important for devices with motors or other elements generating high starting currents – this avoids unnecessary tripping of the protection during normal operation.

Construction features and application

The S203-C63 circuit breaker is part of the S200 pro M compact series from ABB, known for its high quality and compliance with applicable standards (EN 60898-1 and EN 60947-2). Installation is on a DIN rail, which significantly speeds up and simplifies installation. The device is designed to operate at temperatures from -25°C to 55°C, making it a universal solution even in difficult conditions. The possibility of additional accessories allows the circuit breaker to be adapted to the specific needs of a given installation.

The rated short-circuit interrupting capacity Icn is 6kA at 400V (according to EN 60898-1), and Icu at 230V is as much as 20kA (according to IEC 60947-2), which ensures a high level of safety in the event of a short circuit. The rated insulation voltage Ui is 440V AC, and the rated impulse withstand voltage Uimp is 4kV – these parameters guarantee reliable operation under various voltage conditions. The cross-section of solid conductors can range from 0.75 mm² to 35 mm², and stranded conductors from 0.75 mm² to 25 mm², providing great flexibility when selecting power cables.