Circuit breaker S 303 3P B 25A 6000A TX3 403404

Overcurrent circuit breaker – reliable installation protection

The S 303 TX³ series circuit breaker is a three-pole device designed to protect electrical circuits from the effects of overloads and short circuits. Designed for both home and professional use, it provides effective protection for the electrical installation and connected devices. Its compact design (3 modules wide) makes it easy to install in distribution boards, and the ability to work with additional equipment expands its functionality.

Features and application

This circuit breaker is characterized by a rated current of 25A and a breaking capacity of 6kA at 400V AC, making it a suitable choice for most standard electrical installations. Characteristic B provides a quick response to short-circuit currents, minimizing the risk of damage. Mounting on a TH35 rail is simple and intuitive, and the ability to connect comb or pin bars increases installation flexibility. The device is compatible with DX³ series accessories, such as auxiliary contacts and releases, allowing it to be adapted to specific application needs.

• Overload protection: Protects the circuit from overload – when the drawn current exceeds the permissible value.
• Short-circuit protection: Reacts quickly to a short circuit, disconnecting the circuit and preventing serious damage.
• Compact size: 3 module width allows for efficient use of space in the distribution board.
• Easy installation: Mounting on a TH35 rail is quick and easy.
• Expandability: Compatibility with DX³ series accessories allows you to customize functionality to individual needs.
• Application: Ideal for protecting lighting, socket outlets and other electrical devices in residential and commercial buildings.

Technical parameters and compliance with standards

The S 303 TX³ circuit breaker meets the requirements of EN 60898 standard, which guarantees its safety and reliability. It has energy limitation class 3 and protection degree IP20, providing protection against accidental contact. The rated voltage is 400V AC, and the rated impulse withstand voltage is 4kV. The device is designed to operate in an ambient temperature from -25°C to +55°C. Additionally, the circuit breaker has a black switching lever with the possibility of sealing, which prevents unauthorized switching on or off of the circuit.