Overcurrent breaker S 301 1P B 6 A 6000 A series DX3 407429

Reliable protection for electrical installations – Legrand S 301 circuit breaker

This single-pole circuit breaker from the DX3 series is a critical component of every safe and efficient electrical installation. Designed for both residential and commercial use, it provides effective protection against overloads and short circuits. Its compact dimensions—occupying only one module width—make installation easy even in densely packed distribution boards.

The S 301 breaker with B characteristic is the ideal solution for protecting circuits with devices featuring moderate inrush currents. Its rated current of 6A makes it perfect for safeguarding lighting, electrical outlets, and small household appliances. The rated short-circuit breaking capacity of 6 kA (per EN 60898) and 10 kA (per IEC 60947-2) ensures rapid and safe response in the event of a fault.

Design and functionality tailored for professionals

The Legrand S 301 breaker has been engineered with installers in mind. Its compact design and compatibility with TH35 rail mounting enable fast and hassle-free installation. The allowable conductor cross-sections range from 1.5 to 35 mm² for single-core cables and from 1.5 to 25 mm² for multi-core cables, ensuring compatibility with various wiring types. Additionally, the IP20 protection rating guards against accidental contact and prevents the ingress of solid foreign objects into the device.

The use of the B characteristic means the breaker responds quickly to overloads while being more tolerant of brief current surges than C- or D-characteristic breakers. This is particularly important for devices that draw higher current momentarily during startup, such as electric motors or transformers. The rated insulation voltage (Ui) of 500 V ensures safety even in installations with higher operating voltages.

Key features and benefits

• Compact size: Occupies only one module width, saving space in the distribution board.
• B characteristic: Ideal for protecting circuits with devices featuring moderate inrush currents.
• High short-circuit breaking capacity: 6 kA (EN 60898) / 10 kA (IEC 60947-2) ensures rapid fault response.
• Wide conductor cross-section range: Compatible with various wiring types (1.5–35 mm²).
• Durable construction: Made from high-quality materials, ensuring long service life and reliable operation across temperatures from -25°C to +70°C.
• Safety: IP20 protection prevents accidental contact and ingress of solid foreign objects.
• Versatility: Designed for AC installations at 230V and 50–60 Hz frequency.
• Standards compliance: Meets requirements of EN 60898 and IEC 60947-2, ensuring safety and regulatory compliance.