Overcurrent circuit breaker, 3P, B characteristic, 40A, 6kA, AC | S203-B40 2CDS253001R0405

Electrical installation protection with S200 series circuit breaker

This three-pole circuit breaker with B characteristic provides reliable protection for your electrical installation. Designed to protect against overloads and short circuits, it ensures safe operation and long-term system performance. A rated current of 40A combined with a short-circuit breaking capacity of 6kA (AC) makes it an ideal choice for both home and commercial installations.

Functionality and application

This circuit breaker is used in lighting circuits, electrical outlets, and for protecting electrical devices with moderate starting current. The B characteristic means that the circuit breaker reacts quickly to short circuits, but is more tolerant to short-term current surges during device start-up – which is particularly important when connecting motors or transformers. DIN rail mounting with a width of 3 modules simplifies integration with existing electrical infrastructure.

Key features and benefits

• High short-circuit breaking capacity: 6kA at 400V provides effective protection against the effects of short circuits. Additionally, the circuit breaker has a short-circuit breaking capacity of 20kA at 230V and 10kA at 400V according to IEC 60947-2.
• B characteristic: Ideal for circuits with devices with moderate starting current, minimizes the risk of unnecessary tripping during normal operation.
• Wide operating temperature range: From -25°C to +55°C allows use in various environmental conditions.
• Solid construction: Energy limitation class 3 and overvoltage category III guarantee resistance to interference and long-term reliability.
• Conductor cross-sections: 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, provides installation flexibility.
• Safety confirmed by standards: Compliance with EN 60898 and IEC 60947-2 standards ensures a high level of safety and reliability.
• Compact dimensions: Width of 3 modules allows for efficient use of space in the switchgear cabinet.
• Expandability: Compatibility with additional accessories increases the functionality of the device and adapts it to individual installation needs.

This circuit breaker is a proven element of the ABB pro M compact systems, offering safety and reliability for years to come. Its solid construction and compliance with applicable standards make it an optimal choice for both professional installers and demanding end-users.