Overcurrent circuit breaker, B characteristic, 6 kA, 13 A, 3P SZ203-B13 2CDS253025R0135

Reliable protection of electrical installations – ABB S203 series circuit breaker

This three-pole circuit breaker from ABB with B characteristic is a key element of protection in every electrical installation. It provides effective protection against the effects of overloads and short circuits, minimizing the risk of damage to equipment and fires. Designed to operate in networks with a voltage of 400V, it offers a rated current of 13A and a short-circuit breaking capacity of 6kA, making it an ideal solution for both domestic and industrial installations.

Construction and mounting – simplicity and functionality

The circuit breaker is characterized by a compact design, taking up 3 modules on a DIN rail. Its embedding depth is 69 mm. Installation is extremely simple and intuitive, which translates into time savings during installation. The cross-sections of the cables that can be connected to the circuit breaker are from 0.75 mm² to 35 mm² for solid conductors and from 0.75 mm² to 25 mm² for stranded conductors. This makes the device compatible with a wide range of cabling used in construction.

B characteristic – protection of sensitive receivers

The B characteristic means that the circuit breaker reacts quickly to an increase in short-circuit current, but is more tolerant to short-term current surges than circuit breakers with C or D characteristics. This makes it particularly recommended for protecting circuits powering electronic receivers, lighting and sockets in residential premises. This will avoid unnecessary tripping of circuits caused by starting devices with high power consumption, such as refrigerators or washing machines. The rated impulse voltage withstand of the circuit breaker is 4 kV, which further increases its reliability and safety of use. The device meets the requirements of overvoltage category III and pollution degree 2 according to IEC standards.