SZ203-B6 overcurrent circuit breaker, 3P, B characteristic, 6A, 6kA, AC 2CDS253025R0065

Overcurrent circuit breaker – reliable protection for electrical installations

This three-pole circuit breaker from ABB's SZ203-B6 series is a key element of any safe electrical installation. It provides effective protection against overloads and short circuits, protecting both devices and the installation itself. It is characterized by a high short-circuit breaking capacity – as much as 6kA, making it an ideal choice for use in residential and commercial buildings.

Characteristics and application

A circuit breaker with characteristic B is particularly recommended for circuits with receivers with high starting current, such as motors, transformers or heating devices. This allows it to react quickly to short circuits, but also allows for short-term overloads without unnecessarily disconnecting the circuit. A wide range of connectable conductors – from 0.75 mm² to 35 mm² (solid) and 0.75 mm² to 25 mm² (stranded) – provides flexibility during installation and adaptation to different conductor cross-sections. Mounting on a DIN rail with a width of 3 modules facilitates integration with existing distribution boards.

Advantages and benefits for professionals and users

• High reliability: The ABB circuit breaker guarantees long-term and trouble-free operation, which translates into peace of mind for both the installer and the end user.

• Protection against overloads and short circuits: Provides comprehensive protection for the electrical installation, minimizing the risk of damage and fires.

• Wide range of applications: Suitable for securing various circuits, including those with receivers with high starting current.

• Easy installation: Compact dimensions (installation depth 69 mm) and mounting on a DIN rail facilitate and speed up installation.

• Compliance with standards: Meets the requirements of EN 60898, ensuring safety and compliance with regulations.

• Resistance to harsh conditions: Designed to operate at temperatures from -25°C to 55°C, which increases its versatility.

• Energy limitation class 3: Means higher resistance to fault energy, which translates into a longer device life.

• Rated insulation voltage Ui 440V: Ensures safety in installations with higher working voltage.

This circuit breaker is characterized by a rated current of 6A and a rated voltage of 400V. Its short-circuit breaking capacity is 6kA at both 400V and 230V. It has a B tripping characteristic, is three-pole and occupies a width of 3 modules on the DIN rail.

This circuit breaker is a solid solution for anyone who values safety, reliability and ease of installation in electrical systems. It is a product of a renowned manufacturer – ABB – which guarantees high quality workmanship and long-term operation.