Overcurrent circuit breaker, 3P+N, B characteristic, 25A, 6kA, AC | S203-B25NA 2CDS253103R0255

Reliable protection of electrical installations – 3P+N circuit breaker

This three-pole circuit breaker with a neutral pole (3P+N) is a key element of every safe electrical installation. Designed to protect against overloads and short circuits, it provides reliable operation in homes, commercial and industrial buildings. Characteristic B makes it ideal for circuits with devices with high inrush current, such as motors or transformers. Rated current of 25A and short-circuit breaking capacity of 6kA guarantee effective protection even in demanding conditions.

Design and parameters for professionals

The circuit breaker occupies 4 modules on a DIN rail, and its embedding depth is 69 mm. Made of high-quality materials, it ensures long-lasting and trouble-free operation. Resistance to ambient temperature in the range of -25°C to 55°C allows its use in various environmental conditions. The rated insulation voltage Ui is 440V, and the rated voltage is 400V at a frequency of 50-60Hz. It meets the requirements of overvoltage category III and pollution degree 3, which confirms its versatility and reliability in various applications.

Safety and functionality for everyone

The circuit breaker provides comprehensive protection of the installation:

• Overload and short-circuit protection: Protects the circuit from damage caused by excessive load or a sudden increase in current.
• Characteristic B: Allows for a quick response to short circuits, while allowing a short-term exceedance of the rated current without tripping, which is important when starting devices with motors.
• Neutral pole: The presence of a neutral pole (N) enables full circuit protection, also against insulation faults.
• Wide connection range: The possibility of connecting solid wires with a cross-section from 0.75 mm² to 35 mm² and stranded wires from 0.75 mm² to 25 mm² provides flexibility during installation.
• Compliance with standards: Meets strict safety standards (energy limitation class 3), guaranteeing a high level of protection for people and property.
• High short-circuit breaking capacity: The rated short-circuit breaking capacity Icn is as high as 6kA at 400V, and Icu reaches even 20kA at 230V, ensuring effective protection in the event of serious failures.
• Expandability: Compatible with additional accessories, allowing it to be adapted to individual installation needs.