Overcurrent breaker S 313 3P B 63 A 10000 A series DX3 408997

Three-pole overcurrent circuit breaker – reliable protection for installations

This DX3 series overcurrent circuit breaker, rated at 63A with characteristic B, is a critical component for electrical protection in any circuit. It provides effective protection against overloads and short circuits, safeguarding both equipment and the electrical installation. Characteristic B means the breaker responds quickly to short-circuit currents while being more tolerant of brief current surges—particularly important when connecting devices with motors or transformers.

Design and specifications

The breaker is designed for mounting on a TH35 rail, simplifying installation and replacement. Its 3-module width allows efficient use of space in the distribution board. The rated short-circuit breaking capacity (Icn) is 10 kA at 400 V and 16 kA at 230 V, ensuring safety in the event of a fault. Additionally, it complies with IEC 60898 and IEC 60947-2 standards. It is suitable for operation in temperatures ranging from -25°C to 70°C. It supports connection of single-core cables with cross-sections from 1.5 mm² to 35 mm² and multi-core cables from 1.5 mm² to 25 mm², ensuring compatibility with various installation types.

Functionality and applications

The S 313 breaker is not only a protective device but also a user-friendly solution for installers. The option to equip it with auxiliary contacts, trip units, and drives from the DX³ series expands its functionality and allows customization to specific installation requirements. Compatibility with residual current devices (RCDs) enables the creation of a comprehensive protection system. As a result, this breaker is suitable for both residential and commercial installations—protecting lighting, power sockets, and household appliances. The IP20 protection rating ensures protection against accidental contact.