Overcurrent circuit breaker, 3P, K characteristic, 10A, 6kA, AC | S203-K10 2CDS253001R0427

Overcurrent circuit breaker from the S203-K10 series is a reliable protection for electrical installations against overloads and short circuits. Designed for operation in alternating current (AC) circuits, it offers effective protection for both installers and end-users. The construction based on the proven K characteristic ensures optimal performance in various conditions.

Protection and functionality

This three-pole (3P) circuit breaker with a rated current of 10A is designed to protect circuits with a rated voltage of 400V. Its short-circuit breaking capacity reaches 6kA, guaranteeing safety in the event of a failure. The K characteristic means that the circuit breaker reacts slightly slower to short-term current surges, which is particularly important when connecting devices with motors or other elements generating inrush current – this avoids unnecessary tripping of the circuit. The rated short-circuit breaking capacity Icn is 6kA at 400V, and Icu reaches 10kA, confirming its high effectiveness.

Installation and compatibility

The S203-K10 circuit breaker occupies 3 modules on a DIN rail, making it easy to install in electrical distribution boards. The cross-section of the cables that can be connected to it is from 0.75 mm² to 35 mm² for solid conductors and from 0.75 mm² to 25 mm² for stranded conductors. The width expressed in number of modules is 3. The device operates in a frequency range from 50 to 60 Hz and is intended for use in ambient temperatures from -25°C to +55°C. The degree of protection IP20 provides basic protection against contact and ingress of solid objects. The energy limitation class is 3, and the surge category is III – these parameters indicate its suitability for installations with increased safety requirements.