Overcurrent circuit breaker S 314 4P B 16 A 10000 A DX3 series 409065

The DX3 series circuit breaker is a reliable protective device for electrical installations against overloads and short circuits. The S 314 model, a four-pole device with a rated current of 16A, offers high operational efficiency and easy installation. It is designed for use in residential, commercial, and industrial applications.

Characteristics and Applications

The circuit breaker with B characteristic ensures rapid response to current surges, which is particularly critical in circuits with high inrush current loads, such as motors. The rated short-circuit breaking capacity (Icn) is 10kA at 400V and 16kA at 230V, while the ultimate short-circuit breaking capacity (Icu) according to IEC 60947-2 is 16kA and 32kA respectively—ensuring effective protection of the installation in the event of a fault. The device width of 4 modules (70mm) allows efficient use of space in the distribution board. Installation is performed on a standard TH35 rail.

Construction and User Features

The circuit breaker’s design prioritizes installer convenience. It supports connection of single-core cables with cross-sections from 1.5 to 35 mm² and multi-core cables from 1.5 to 25 mm², providing installation flexibility. Additionally, the device features a simultaneously disconnectable N pole, enhancing safety during maintenance work. The IP20 protection rating guards against accidental contact, and the wide operating temperature range (-25°C to +70°C) enables use in diverse environmental conditions. The circuit breaker is compatible with DX³ series accessories such as auxiliary contacts and trip units, allowing customization to meet specific installation requirements. The rated insulation voltage (Ui) is 500V, and the rated impulse withstand voltage (Uimp) is 4kV.