Overcurrent breaker S 301 1P D 3 A 6000 A series TX3 403715

Overcurrent circuit breakers of the TX³ series – reliable protection for your installation

This single-pole overcurrent circuit breaker S 301 from the TX³ series is a key component ensuring electrical safety in every circuit. Designed to protect against the effects of overloads and short circuits, it performs reliably in both residential and professional installations. The D characteristic makes it especially resistant to sudden current surges, which is critical when powering motors or other loads with high inrush currents.

This breaker, rated at 3A and with a short-circuit breaking capacity of 6 kA at 230 V, provides effective protection for electrical installations. Installation is simple thanks to the bottom clip and insulated terminal barriers, saving time and enhancing comfort during installation. Its compact 1-module width allows efficient use of space in distribution boards.

Design features and applications

The S 300 TX³ overcurrent circuit breakers stand out for their versatility and compatibility with a wide range of auxiliary equipment – auxiliary and signaling contacts, undervoltage releases, and remote actuators. This enables customization of the breaker’s functionality to meet specific installation requirements. The rated impulse voltage withstand level is 4 kV, ensuring resistance to voltage surges, while the IP20 protection rating provides basic protection against accidental contact.

The S 301 TX³ overcurrent circuit breaker is suitable for:

• Protection of lighting circuits
• Protection of socket outlets
• Protection of low-power electrical devices
• Electrical installations in residential and public utility buildings
• Electrical distribution boards

Key parameters and compliance with standards

This breaker complies with EN 60898-1 and IEC 60947-2 standards, confirming its safety and reliability. It is designed for operation in AC networks at 230 V and 50–60 Hz frequency. Its mounting depth is 44 mm, and the pollution degree is 2. Constructed from high-quality materials, it ensures long-term, fault-free operation. The rated short-circuit making capacity (Icn) reaches 6 kA at 230 V, guaranteeing effective response in the event of a short circuit.