Overcurrent circuit breaker, 3P, D characteristic, 16A, 10kA, AC | S203M-D16 2CDS273001R0161

Three-pole circuit breaker S203M-D16 series – reliable installation protection

This three-pole circuit breaker from ABB’s S203M series, with D characteristic and a rated current of 16A, is a key element ensuring safety and continuity of operation in electrical installations. Designed for both domestic and industrial applications, it effectively protects circuits against overload and short circuit. The D characteristic means that the breaker reacts with a delay to short-term current surges, which is particularly important when handling devices with motors or other loads with high inrush current.

Construction and application

This circuit breaker is used in electrical distribution boards, providing protection for power lines to various types of receivers. Its compact dimensions – a width of 3 modules – allow for efficient use of space in distribution cabinets. Mounting is on a DIN rail, which simplifies and speeds up installation. The rated short-circuit breaking capacity (Icn) is 10kA at 400V and 230V, and also 15kA (Icu) at 400V and 25kA (Icu) at 230V, guaranteeing an effective response in the event of a failure. Energy limitation class 3 and surge category III indicate its resistance to interference and ability to operate in difficult conditions.

Key features and benefits

• D characteristic: Ideal for protecting circuits with devices with high inrush current (e.g. motors, transformers), minimizing the risk of the breaker tripping unnecessarily during normal operation.
• High short-circuit breaking capacity: Ensures a quick and effective response in the event of a short circuit, protecting the installation from serious damage.
• Compact dimensions: A width of 3 modules allows for space-saving use in the distribution board.
• Versatility: Suitable for use in both domestic and industrial installations.
• Durable construction: Made of high-quality materials ensures long life and reliable operation.
• Wide operating temperature range: The ability to operate in a temperature range from -25°C to +55°C makes it suitable for different environmental conditions.
• Possibility of additional equipment: Allows the breaker to be adapted to the specific needs of the installation.
• Wire cross-sections: Accepts solid wires with a cross-section from 0.75 mm² to 35 mm² and stranded wires from 0.75 mm² to 25 mm².

The S203M-D16 circuit breaker is characterized by a rated current of 16A and a D tripping characteristic. Its short-circuit breaking capacity (Icn) is 10kA at 400V and 230V, and also 15kA (Icu) at 400V and 25kA (Icu) at 230V. The width of the device is 3 modules, and the permissible ambient temperature range during operation is -25°C to +55°C.

The S203M-D16 circuit breaker is a solid and reliable solution for every installer and user looking for effective protection of their electrical installation. Its technical parameters guarantee safe and long-lasting operation of the power system.