Overcurrent circuit breaker, 3P, C characteristic, 40A, 10kA, AC | S203M-C40 2CDS273001R0404

Reliable protection of electrical installations – ABB S203M-C40 circuit breaker

This three-pole circuit breaker from ABB with C characteristic is a key element ensuring safety and reliability in every electrical installation. Designed to protect against overloads and short circuits, it is perfect for both residential and commercial buildings. Rated current of 40A and short-circuit breaking capacity of 10kA guarantee effective response in emergency situations, minimizing the risk of damage and fires.

The S203M-C40 circuit breaker is characterized by a compact design, taking up only 3 modules on a DIN rail. Installation is simple and intuitive, which translates into time savings during installation. Thanks to a wide range of permissible wire cross-sections (from 0.75 mm² to 35 mm² for solid and 25 mm² for stranded wires), the circuit breaker is compatible with various types of cabling.

Solid construction and high resistance

The circuit breaker is made of high-quality materials, which ensures its durability and resistance to environmental conditions. Energy limitation class 3 and surge category III confirm its ability to operate in demanding conditions. IP20 protection degree protects against accidental contact and the ingress of solid objects larger than 12.5 mm. The C characteristic provides delayed tripping during short-term overloads, which is particularly important when connecting devices with motors or other elements generating high starting currents – this avoids unnecessary tripping of the circuit.

Application and compliance with standards

The S203M-C40 circuit breaker is used in lighting circuits, electrical outlets and for protecting electrical devices with a power of up to 40A. It meets the requirements of EN 60898 and IEC 60947-2 standards, which guarantees its safety and compliance with applicable regulations. The rated impulse withstand voltage Uimp is as high as 4kV, which further increases its resistance to overvoltages. Power losses are 14.4W, which affects the energy efficiency of the installation.