Overcurrent circuit breaker S 304 4P B 13 A 6000 A TX3 series 403416

Reliable protection for electrical installations with Legrand TX³ circuit breaker

The S 304 4P B 13 A circuit breaker from the TX³ series is a critical protective element in any electrical installation. It provides effective protection against the consequences of overloads and short circuits, ensuring safe operation and extended lifespan of connected devices. This four-pole breaker, with a B characteristic and rated current of 13 A, is ideal for both residential and commercial applications.

Design and functionality

The TX³ series breaker features a well-thought-out design that simplifies installation and wiring. The bottom clip and shielded terminals significantly streamline the installation process, saving time and minimizing the risk of errors. Its compact dimensions — occupying only 4 modules — enable efficient use of space in the distribution board. Additionally, compatibility with a wide range of auxiliary accessories (auxiliary contacts, trip units) expands device functionality and allows customization to meet specific requirements.

Technical specifications and applications

The S 304 4P B 13 A breaker features a high breaking capacity — 6 kA at 400 V and 10 kA at 230 V — ensuring rapid and effective response during fault conditions. The B characteristic means the breaker reacts quickly to short-circuit current surges while remaining tolerant of brief current spikes during motor startup. The rated impulse withstand voltage (Uimp) is 4 kV, confirming its resistance to voltage surges. It complies with EN 60898-1 and EN 60947-2 standards. Designed for AC networks with a rated voltage of 400 V and frequency of 50–60 Hz. IP20 protection rating ensures protection against accidental contact.

The rated current is 13 A, rated insulation voltage (Ui) is 500 V, and rated breaking capacity (Icn) is 6 kA (at 400 V) and 10 kA (at 230 V). The breaker has a B trip characteristic, four poles, and occupies a width of 4 modules. It is a four-pole breaker with simultaneous disconnection of the neutral conductor, ideal for protecting high-power circuits and applications requiring full protection against short circuits and overloads. Flush mounting enhances installation aesthetics.