Circuit breaker S 303 3P D 6A 6000A TX3 403751

Reliable protection of electrical installations – Legrand S 303 circuit breaker

This three-pole circuit breaker with D characteristic is a key element ensuring the safety and continuity of the electrical installation. Designed to protect against the effects of overloads and short circuits, it performs well in both home and commercial installations. The S 303 model from the TX³ series is distinguished by its high reliability and ease of installation, which will be appreciated by both professional installers and end users.

Functionality and parameters

The S 303 circuit breaker has been designed with effective protection of electrical circuits in mind. Its D characteristic means delayed tripping with short-term overloads, which is particularly important for devices with motors or other elements generating high starting currents. The rated current of 6A and the breaking capacity of 6kA (at 400V) guarantee an effective response in emergency situations. In addition, the rated voltage of 400V and the impulse voltage withstand of 4kV ensure safety even in difficult operating conditions.

• D characteristic: Delayed tripping allows for trouble-free starting of devices with high inrush current – an ideal solution for installations with motors, pumps or transformers.
• Breaking capacity 6kA: Ensures effective disconnection of the circuit in the event of a short circuit, minimizing the risk of damage and fire.
• Mounting on TH35 rail: Standard mounting simplifies integration with existing electrical infrastructure.
• Width 3 modules: Compact dimensions allow for efficient use of space in the switchgear cabinet.
• Protection class IP20: Protection against finger contact ensures safe use.

Construction and compatibility

The TX³ series circuit breakers are characterized by a well-thought-out design that facilitates installation and maintenance. The lower latch and terminal covers provide convenient connection of wires. Importantly, the TX³ series is compatible with the DX³ series, allowing for flexible adaptation to individual project needs. The ability to equip with additional accessories, such as auxiliary contacts or release units, increases the functionality of the device and allows it to be adapted to specific installation requirements. Made of high-quality materials, the circuit breaker ensures long-lasting and trouble-free operation.