S203-C40 overcurrent circuit breaker 2CDS253001R0404

Reliable protection of electrical circuits – circuit breaker S203-C40

This three-pole circuit breaker with C characteristic is a solid solution for protecting electrical installations against overloads and short circuits. It will work both in home and industrial installations where high reliability and effective protection are required. Manufactured by the renowned ABB, it guarantees long-term and trouble-free operation.

Functionality and technical parameters

The S203-C40 circuit breaker has been designed with versatility and ease of installation in mind. Its compact dimensions – 3 modules wide – allow for efficient use of space in the switchboard. The rated current of 40A and high short-circuit breaking capacity (up to 20 kA at 230V and 10 kA at 400V) ensure effective protection even in the event of high loads and sudden current surges. The C characteristic allows it to react more slowly to short current surges, making it well suited for starting devices with motors, such as pumps or compressors.

• Overload protection: Protects the circuit against overload and short circuit — like most circuit breakers in this class.
• High breaking capacity: Ensures safe disconnection of the circuit in the event of a short circuit.
• Versatility: 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.
• Wide operating temperature range: Trouble-free operation at temperatures from -25°C to +55°C.
• Durable construction: IP20 protection degree provides protection against touch and dust.

Installation and application

The S203-C40 circuit breaker is designed for mounting on a TH35 rail. Its simple construction makes installation easy for both professional electricians and people with basic electrical knowledge. It is ideal for protecting:

• Lighting circuits
• Socket circuits
• Electrical devices with high power consumption (e.g. heat pumps, electric heaters)
• Installations in residential, commercial and industrial buildings

Additional possibility of expansion with accessories allows to adapt the circuit breaker to individual installation needs. Compliance with EN 60898 and IEC 60947-2 standards guarantees the safety and reliability of the device.