Overcurrent circuit breaker, 3P, K characteristic, 16A, 6kA, AC | S203-K16 2CDS253001R0467

Overcurrent circuit breaker – reliable protection for electrical installations

This three-pole overcurrent circuit breaker with K characteristic is a key element of every safe electrical installation. Designed to protect against the effects of overloads and short circuits, especially in places where devices generating high inrush currents are present – such as motors, transformers or equipment with high inductance. This makes it suitable for both home installations and demanding industrial environments.

This circuit breaker belongs to the System pro M compact S200 series from ABB, which guarantees high quality workmanship and compliance with applicable standards. Mounting on a DIN TH35 rail is quick and intuitive, which will be appreciated by professional installers. Compact dimensions (3 modules – 52.5 mm wide) allow for efficient use of space in the distribution board.

Solid construction and parameters ensuring safety

The circuit breaker is characterized by a rated current of 16A and a short-circuit breaking capacity of up to 6kA at 400V AC and as much as 20kA at 230V AC. The K characteristic provides a delayed tripping time during short-term overloads, which minimizes the risk of unnecessary tripping of the circuit during the start-up of high-power devices. The rated insulation voltage Ui is 440V, and the impulse withstand voltage Uimp is as high as 4kV – this confirms high resistance to operating conditions.

• Protection against overloads thanks to the time-delay thermal mechanism.
• Protection against short circuits thanks to the quick-acting magnetic mechanism.
• Possibility of mounting additional auxiliary contacts to expand the functionality of the automation and monitoring system.
• Wide range of wire cross-sections: rigid 0.75–35 mm² and flexible 0.75–25 mm².
• Durable construction ensuring long electrical (20,000 cycles) and mechanical (20,000 cycles) life.
• Degree of protection IP20 provides basic protection against accidental contact.

Practical features for installers and users

The S203-K16 circuit breaker is a universal solution that will meet the expectations of both professionals and end users. Simple mounting on a DIN TH35 rail and two-way cylinder-lift screw terminals facilitate the connection of wires of different thicknesses. The ability to operate in a wide range of ambient temperatures (-25°C to +55°C) guarantees reliable operation in various environmental conditions. In addition, power losses of only 6W (2W per pole) contribute to reducing energy consumption in the installation.