The ABB SX203-B20 Flexline circuit breaker provides robust 3-pole overcurrent protection for professional electrical installations. Designed for panel builders and electricians, it delivers reliable protection with a 20 A rating and a B-Characteristic trip curve.

Key Features & Design

• Model: SX203-B20 Flexline
• Poles: 3P
• Rated current: 20 A
• Trip curve: B-Char.
• Breaking capacity: 6 kA
• Part number: 2CDS253003R0205
• System: Flexline family

Performance / Benefits

With a 6 kA breaking capacity and fast, predictable tripping, this circuit breaker helps protect wiring from overloads and short circuits, reducing the risk of damage and downtime. The 3-pole design ensures synchronized protection across multiple conductors, simplifying installation in distribution boards and panel assemblies. The rugged ABB build supports long service life in demanding electrical environments. Designed for integration into ABB Flexline distribution setups, it enables modular, scalable protection in commercial and industrial applications.