Circuit breaker S 303 3P D 63A 6000A TX3 403761

Reliable protection of electrical installations – Legrand S 303 TX³ circuit breaker

This three-pole circuit breaker with D characteristic is a key element in protecting electrical installations, both in residential and commercial buildings. It provides effective protection against the effects of overloads and short circuits, minimizing the risk of damage to equipment and fires. Manufactured by the renowned Legrand, it guarantees high quality and reliable operation.

Design and parameters for professionals

The S 303 TX³ circuit breaker has been designed for easy installation and convenient wiring. The lower latch and terminal shields significantly facilitate the work of installers. Designed for mounting on a TH35 rail, it is 3 modules wide. Its rated current is 63A at 400V AC, and the rated short-circuit breaking capacity (Icn) is as high as 6 kA at 400V and 10 kA at 230V. The D characteristic provides a delayed tripping, which is particularly important for loads with high inrush currents – e.g. electric motors or transformers. The rated insulation voltage Ui is 500V, and the impulse withstand voltage Uimp is 4kV. The IP20 degree of protection provides basic protection against touch and ingress of solid objects.

Application and benefits for the end user

The S 303 TX³ circuit breaker is an investment in the safety of your electrical installation and connected devices. It protects the circuit against overload and short circuit — like most circuit breakers in this class. Thanks to the D characteristic, it will not trip unnecessarily during short-term voltage surges, which is particularly useful for devices with motors (e.g. refrigerators, washing machines). Flush mounting allows it to be aesthetically integrated into the existing electrical infrastructure. The ability to cooperate with additional auxiliary equipment (auxiliary contacts, release devices) allows for expanding the functionality of the protection system. Made of high-quality materials, it ensures long-lasting and trouble-free operation.