Overcurrent circuit breaker, 1P, B characteristic, 20A, 6kA, AC | S201-B20 2CDS251001R0205

Reliable protection of electrical installations – ABB S201 series circuit breaker

This single-pole circuit breaker from ABB’s S201 series is a key safety element in every electrical installation. It provides effective protection against overloads and short circuits, guaranteeing safety and long-term reliability. The B characteristic makes it ideal for circuits with devices with high inrush current, such as motors or transformers.

This circuit breaker, with a rated current of 20A and a short-circuit breaking capacity of 6kA, is perfect for both home and commercial installations. Its compact size (1 module wide) allows for easy mounting on a DIN rail in a distribution board. The rated insulation voltage Ui of 440V provides additional safety in the event of overvoltage.

Construction and application

The S201-B20 circuit breaker has been designed for easy installation and intuitive operation. Its solid construction guarantees durability and resistance to mechanical damage. The cross-section of the solid core connecting wire up to 35mm² and the multi-core wire up to 25mm² ensures compatibility with various types of wires. A wide operating temperature range (-25°C to +55°C) allows it to be used in various environmental conditions.

The circuit breaker is used to protect lighting circuits, socket outlets and other electrical devices with moderate power consumption. Thanks to the B characteristic, it copes well with short-term current surges, which is particularly important when connecting devices with induction motors or transformers. The breaking capacity of 6kA (at 230V and 400V) and 10kA (according to IEC 60947-2) guarantees effective disconnection of the circuit in the event of a short circuit.

Key features and benefits

• B characteristic: Provides a quick response to overloads and short circuits, while allowing the start-up of devices with high inrush current without unnecessary tripping.
• Short-circuit breaking capacity of 6kA: Protects the installation from serious damage in the event of a short circuit.
• Compact dimensions (1 module): Allows for efficient use of space in the distribution board.
• Wide operating temperature range: Allows the circuit breaker to be used in various environmental conditions.
• Compliance with EN 60898 and IEC 60947-2 standards: Guarantees the safety and reliability of the device.
• Wire cross-section up to 35mm²: Provides flexibility when selecting power supply wires.
• Protection class IP20: Protection against touching with a finger and solid objects larger than 12.5 mm – standard for devices mounted inside distribution boards.
• Energy limitation class 3: Provides adequate protection against the effects of electric arc during short-circuit switching.