S202-C25 overcurrent circuit breaker, 2P, C characteristic, 25A, 6kA, AC 2CDS252001R0254

Reliable protection of electrical installations – circuit breaker S202-C25

This two-pole circuit breaker with characteristic C is a key element of every safe and reliable electrical installation. Designed to protect circuits against overloads and short circuits, it performs well in both domestic, commercial and industrial applications. Manufactured by the renowned ABB company, it guarantees high quality and long-lasting operation.

Construction and application

The S202-C25 circuit breaker belongs to the S200 System pro M compact series, which is characterized by its compact dimensions and ease of mounting on a DIN rail. Characteristic C means a delayed tripping time, which is particularly important in circuits with devices generating high inrush currents during start-up – such as motors or transformers. This prevents the circuit breaker from tripping unnecessarily during short-term current surges, while effectively reacting in the event of a real threat. The rated current of 25A makes it ideal for protecting circuits with medium loads.

Key features and benefits

• High short-circuit breaking capacity: The rated short-circuit breaking capacity Icn is 6kA at 400V, which ensures effective protection of the installation in the event of a short circuit. Additionally, the impulse withstand strength Icu reaches 10kA at 400V and 20kA at 230V.
• Wide operating temperature range: The circuit breaker maintains its properties in the temperature range from -25°C to +55°C, which allows its use in various environmental conditions.
• Universal mounting: Mounting on a DIN rail TH35 makes installation easier and faster.
• Compliance with standards: Meets the requirements of EN 60898-1 and EN 60947-2 standards, which guarantees safety and reliability.
• Adapted to different wire cross-sections: 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 in choosing wires.
• Compact dimensions: A width of only 2 modules allows for efficient use of space in the switchgear cabinet.

Technical parameters in practice

The S202-C25 circuit breaker is characterized by a rated voltage of 400V and an insulation voltage Ui of 440V. Overvoltage category III provides resistance to disturbances in the electrical network. The IP20 degree of protection protects against touching with fingers, but does not provide protection against the effects of water or dust – therefore, the circuit breaker should be mounted in dry and closed rooms. Power losses of 6.4W are typical for this type of device and do not significantly affect the energy efficiency of the installation.