Circuit breaker S 304 4P B 20A 6000A TX3 403418

Overcurrent circuit breaker – reliable protection for electrical installations

This four-pole circuit breaker from the S 300 TX³ series is a key element of every safe electrical installation. It provides effective protection against the effects of overloads and short circuits, guaranteeing safety of use and minimizing the risk of failure. Manufactured by the renowned Legrand company, it combines high quality workmanship with modern technical solutions.

Functionality and technical parameters

The circuit breaker is characterized by a rated current of 20A and a B characteristic, which means it reacts quickly to current increases, but is resistant to short-term surges, e.g. when starting motors. The rated short-circuit breaking capacity is 6 kA at 400V and 10 kA at 230V – this is an important parameter for ensuring effective protection in the event of a short circuit. Mounting is done on a standard TH35 rail, which simplifies and speeds up installation. Additionally, the possibility of flush mounting allows for aesthetic adaptation to the surroundings.

• Overload and short circuit protection: Protects the circuit from damage caused by excessive load or short circuit.
• B characteristic: Ideal for circuits with devices with high starting current (e.g. motors).
• Breaking capacity: 6 kA (400V) / 10 kA (230V) – a high value guaranteeing effective disconnection in the event of a failure.
• Mounting on TH35 rail: Standard mounting for easy installation and replacement.
• Expandability: Compatible with DX³ series accessories, such as auxiliary contacts and additional release devices, allowing you to adapt the functionality to individual needs.
• Protection degree IP2X: Protection against touching with a finger and solid objects larger than 12.5 mm.
• Rated voltage: 400 V AC – standard voltage in most electrical installations.

Design and application

The S 304 TX³ circuit breaker has been designed with ease of installation and convenience of use in mind. The lower latch and terminal covers facilitate connection of wires, and the solid construction ensures long-lasting and reliable operation. It is suitable for use in a wide range of applications – from home installations to commercial and industrial facilities. This is a particularly important solution where high reliability and safety of the electrical installation are required. The four-pole design makes it ideal for protecting three-phase electrical circuits.