Overcurrent circuit breaker, 3P, B characteristic, 63A, 10kA, AC | S203M-B63 2CDS273001R0635

Reliable protection of electrical installations – 3P circuit breaker, 63A

This three-pole circuit breaker with B characteristic is a key element of every safe electrical installation. It provides effective protection against overloads and short circuits, minimizing the risk of damage and fire. Its compact size – only 3 modules wide – makes it easy to install even in crowded distribution boards. This circuit breaker is ideal for both professional installers and homeowners who value safety and reliability.

Functionality and parameters tailored to your needs

The S203M-B63 circuit breaker is characterized by a rated current of 63A and a high short-circuit breaking capacity – up to 10kA at 400V (according to EN 60898). The B characteristic means that the circuit breaker reacts quickly to short-term current surges, but allows for momentary overloads, which is particularly important when connecting devices with electric motors or other elements generating high starting current. A short-circuit breaking capacity of 15kA at 400V (according to IEC 60947-2) further increases the safety of the installation.

• Wide range of applications: Suitable for protecting lighting circuits, socket circuits and electrical appliances in residential and commercial buildings.
• Universal mounting: Possibility to connect solid conductors with a cross-section from 0.75 mm² to 35 mm² and stranded conductors from 0.75 mm² to 25 mm², ensures compatibility with various types of installations.
• Durable construction: Made of high-quality materials, resistant to environmental conditions (operating temperature from -25°C to +55°C) and meeting safety standards (energy limitation class 3, surge category 3, pollution degree 3).
• Additional possibilities: Possibility to expand with additional equipment allows you to adapt the circuit breaker to specific installation needs.
• High insulation: Rated insulation voltage Ui is as high as 440V, which guarantees safe use.

The use of the B characteristic makes the circuit breaker cope well with impulse loads and short-term current surges – typical of many household appliances. This minimizes the risk of unnecessary tripping of the circuit during normal operation of the devices. Power losses of only 14.4W demonstrate the energy efficiency of the device. IP20 protection degree provides protection against accidental contact.