Overcurrent circuit breaker, 3P, B characteristic, 20A, 6kA, AC | S203-B20 2CDS253001R0205

Reliable protection of electrical installations – ABB S203-B20 circuit breaker

This three-pole circuit breaker from the ABB S200 series is a key element of every safe and reliable electrical installation. Designed to protect circuits against overloads and short circuits, it performs well in residential, commercial, and industrial buildings. B characteristic ensures a quick response to current increase, protecting devices and infrastructure. Rated current of 20A and short-circuit breaking capacity of 6kA guarantee effective protection in typical applications.

The S203-B20 circuit breaker complies with IEC/EN 60898-1 and IEC/EN 60947-2 standards, confirming its high quality and safety. Installation of this circuit breaker requires electrical qualifications – remember to disconnect the power before starting work to avoid the risk of electric shock or fire.

Solid construction and a wide range of applications

The circuit breaker is characterized by compact dimensions – it occupies only 3 modules on a TH35 rail. The cross-section of the connected multi-wire cable is from 0.75 to 25 mm², and the single-wire cable from 0.75 to 35 mm², providing flexibility during installation. Operation in a temperature range from -25°C to +55°C makes it suitable for use in various environmental conditions. The possibility of expanding with additional accessories increases the functionality of the device and allows it to be adapted to specific installation needs.

Rated impulse withstand voltage at 4 kV and overvoltage category III provide additional protection against disturbances in the electrical network. Energy limitation class is 3, which proves high efficiency in damping short-circuit energy. Power losses are 7.5 W, which affects the energy efficiency of the system. Short-circuit breaking capacity Icu at 230 V is as high as 20 kA, and at 400 V – 10 kA, guaranteeing safety even in the event of serious failures.