Circuit breaker S 303 3P B 20A 6000A TX3 403403

Three-pole circuit breaker – reliable installation protection

This S 303 series circuit breaker, with a rated current of 20A and B characteristic, is a key element in protecting electrical installations from the effects of overloads and short circuits. Designed for both professional installers and end-users, it provides a quick and effective response in emergency situations. The breaking capacity of 6kA guarantees safety even in the event of high short-circuit currents.

Design and functionality

This circuit breaker, manufactured by the renowned company Legrand, is characterized by a solid construction and easy mounting on a TH35 rail. The three-pole design makes it ideal for protecting three-phase circuits. The B characteristic ensures fast tripping in the event of overloads, as well as protection against short circuits. The ability to expand with additional equipment from the DX³ series, such as auxiliary contacts or release units, increases its functionality and allows it to be adapted to the specific needs of the installation.

• Short-circuit capacity: 6 kA at 400 V and 10 kA at 230 V – ensures effective protection against damage caused by short circuits.
• B characteristic: fast reaction to overloads, ideal for circuits with receivers with high inrush current (e.g., motors).
• Mounting: Easy mounting on a standard TH35 rail – saves time and installation costs.
• Compatibility: Compatible with DX³ series auxiliary equipment – flexibility and the ability to expand the system.
• Design: Three-pole – ideal for protecting three-phase circuits.
• Rated voltage: 400 V AC - standard voltage in most electrical installations.
• IP20 protection: Protection against finger contact – increased safety of use.
• Width: Occupies 3 modules – compact dimensions allow for efficient use of space in the switchgear cabinet.

This circuit breaker is not only a protective element, but also an investment in the long-term and safe operation of the entire electrical installation. Its solid construction and compliance with standards (energy limitation class 3, pollution degree 2) guarantee reliable and durable operation for many years.