Overcurrent circuit breaker S 302 2P D 3 A 6000 A TX3 series 403732

Overcurrent circuit breakers of the TX³ series – reliable protection for installations

The TX³ series S 302 2P D 3A overcurrent circuit breaker is a key component for electrical protection, designed to safeguard AC installations against the effects of overloads and short circuits. This device, with a rated current of 3A and breaking capacity of up to 6kA (at 400V) and 10kA (at 230V), provides effective protection for both residential and commercial installations. The D characteristic ensures optimal performance in circuits with devices generating high inrush currents during startup, such as motors.

Design and installation – simplicity and functionality

TX³ series overcurrent circuit breakers feature a well-thought-out design that simplifies installation and wiring. The two-pole (2P) construction allows protection of two phase conductors. Mounting is performed on a standard TH35 rail, while the bottom clip and shielded terminals ensure ease and safety during wire connection. Compact dimensions – only 2 modules (36mm) wide – enable efficient use of space in distribution boards. Additionally, the option to equip the breaker with accessories such as auxiliary contacts or trip units enhances functionality and allows customization to meet specific installation requirements.

Application and compliance with standards

The S 302 TX³ overcurrent circuit breaker complies with the requirements of IEC/EN 60898-1 and IEC/EN 60947-2 standards, guaranteeing reliability and safe operation. The IP20 protection rating ensures protection against accidental contact, while the rated insulation voltage Ui of 500V ensures safety under varying operating conditions. The device is designed for surface mounting and supports connection via comb busbars or pin busbars. The rated impulse withstand voltage Uimp of 4kV further enhances its resistance to disturbances. Thanks to its D characteristic, this breaker is ideal for circuits with inductive loads featuring high inrush currents, such as electric motors or transformers.