Overcurrent circuit breaker, 3P, D characteristic, 32A, 10kA, AC | S203M-D32 2CDS273001R0321

Three-pole overcurrent circuit breaker – reliable installation protection

This three-pole circuit breaker from ABB’s S203M series, with D characteristic and a rated current of 32A, is a key element of electrical protection in residential, commercial and industrial buildings. It provides effective protection against the effects of overloads and short circuits, minimizing the risk of damage to equipment and fires. The D characteristic means a delayed response to short-term current surges, which is particularly important when servicing devices with motors or other inductive loads – such as pumps, compressors or air conditioners. This prevents the circuit breaker from tripping unnecessarily when starting these devices.

Construction and application

This circuit breaker is designed for mounting on a TH35 rail in electrical distribution boards. Its width of 3 modules allows for efficient use of space in the distribution cabinet. The rated short-circuit breaking capacity (Icn) is 10kA at 400V and 230V, and the Icu capacity reaches 15kA at 400V and 25kA at 230V – guaranteeing safety even in the event of serious disturbances in the network. The cross-section of solid core wires is from 0.75 to 35 mm², and stranded wires from 0.75 to 25 mm², which provides great flexibility when selecting wires matched to a specific circuit. The circuit breaker meets the requirements of overvoltage category III and pollution degree 3, making it suitable for operation in difficult environmental conditions.

Key features and benefits

• D characteristic: Ideal for protecting circuits powering devices with high inrush current (e.g. motors, transformers). Avoids unnecessary tripping caused by momentary overloads.

• High short-circuit breaking capacity: Ensures safe disconnection of the circuit in the event of a short circuit, protecting equipment and installation from damage.

• Versatility: Suitable for use in both single-phase and three-phase installations with a rated voltage of 400V.

• Compact dimensions: 3 module width makes installation easier and optimizes space in the distribution board.

• Durable construction: Made of high-quality materials ensures long life and reliable operation.

• Wide range of wire cross-sections: Allows connection of wires of different thicknesses, adapting to the needs of a specific installation.

• Compliance with standards: Meets the requirements of EN 60898 and IEC 60947-2 standards, guaranteeing safety of use.

• Operating temperature: The circuit breaker retains its properties in a wide range of ambient temperatures (-25°C to +55°C).

The rated current is 32A, and the characteristic is D. The rated short-circuit breaking capacity (Icn) is 10kA at 400V and 230V, while the Icu capacity reaches 15kA at 400V and 25kA at 230V respectively. The width of the circuit breaker is 3 modules.

This circuit breaker is a solid solution for professionals and end users looking for reliable electrical installation protection. Its technical parameters and functionality guarantee safety and comfort of use for a long time.