Overcurrent circuit breaker S 302 2P D 63 A 6000 A TX3 series 403744

Electrical Installation Protection with Legrand TX³ Circuit Breaker

This two-pole overcurrent breaker from Legrand’s TX³ series provides reliable protection for your electrical installation against the effects of overloads and short circuits. Designed for use in AC circuits with a voltage of 400V, it offers a rated current of 63A and a short-circuit breaking capacity of up to 6kA (compliant with EN 60898) and 10kA (compliant with EN 60947-2). The D characteristic ensures delayed tripping, which is particularly critical for loads with high starting currents, such as motors or transformers.

The S 302 TX³ breaker is suitable for both new installations and upgrades of existing systems. Its compact dimensions — just 2 modules wide — enable efficient use of space in distribution boards. The surface-mount design further enhances the aesthetic appeal of the installation. The rated impulse voltage withstand level of 4kV guarantees resistance to voltage surges.

Construction and Application

Breakers in the TX³ series are distinguished by robust construction and high manufacturing quality. The bottom clip and shielded terminals simplify installation and wiring, saving time and minimizing the risk of errors. Compatibility with a wide range of auxiliary accessories — such as auxiliary and signaling contacts, undervoltage releases, and remote control drives — allows the breaker’s functionality to be tailored to specific installation requirements.

The D characteristic makes this specific model ideal for protecting circuits supplying devices that generate high inrush currents during startup, such as electric motors, compressors, or transformers. It protects the circuit against overload and short circuit — as is standard for breakers in this class. The IP20 protection rating ensures protection against finger contact and ingress of solid objects larger than 12mm. This breaker is intended for installation in dry indoor environments.