Siemens 5SY4108-7 SENTRON 8A Type C 1-Pole Miniature Circuit Breaker DIN-Rail MCB for Control, Lighting & Industrial Circuits | C-Curve Protection

Reliable 8A Miniature Circuit Protection for Industrial and Mechanical Applications
Siemens 5SY4108-7 is a SENTRON miniature circuit breaker engineered for dependable circuit protection in AC systems operating at 230/400 V. This 1-pole Type C breaker delivers a 10 kA rated short-circuit capacity under EN 60898 and is designed for mechanical engineering and industrial environments requiring stable overcurrent protection. It supports safe operation with IP20 protection (with connected conductors) and complies with key standards including IEC/EN 60898-1 and IEC/EN 60947-2.

Why It Helps

• The compact design provides robust and dependable overcurrent protection for industrial and mechanical engineering applications.

• The Type C tripping characteristic supports equipment with moderate inrush currents, improving operational stability.

• Wide temperature tolerance from -40 °C to 70 °C (-40 °F to 158 °F) enables reliable use in harsh or demanding environments.

• High switching capacities—10 kA (EN 60898) and 20 kA (IEC 60947-2)—deliver strong short-circuit protection.

• Touch-safe, halogen-free construction and combined top/bottom terminals enhance installation safety and long-term durability.

• The quick assembly system simplifies mounting and supports efficient integration into industrial electrical systems.

Key Highlights

• • The breaker is compliant with IEC/EN 60898-1, IEC/EN 60947-2, and UL1077, ensuring adherence to global low-voltage protection standards. It also meets RoHS requirements and includes REACH Article 33 disclosures for material reporting.

  • Rated for 230/400 V AC, 8 A, and featuring a Type C tripping characteristic, it supports circuits with moderate startup loads while offering 10 kA (EN 60898) and 20 kA (IEC 60947-2) short-circuit performance.

  • Supports 50/60 Hz AC operation and up to 72 V DC, enabling flexible integration across varied low-voltage systems.

  • Includes energy limitation class 3 and stable mechanical endurance with 10,000 switching cycles, providing an efficient and reliable protective response.

  • Built with IP20 protection (with connected conductors), quick-assembly mounting, and combined top/bottom terminals for safe and efficient installation.

  • No optional accessories are bundled, but the unit is compatible with supplementary devices as indicated in the product info.

  • Environmental performance includes vibration resistance (IEC 60068-2-6) and high tolerance to temperature and humidity conditions, supporting compliance in industrial settings.

Applications

• Electrical protection in mechanical engineering environments.

• Industrial low-voltage power distribution systems requiring stable Type C overcurrent characteristics.

• Suitable for installations needing wide operating temperature tolerance (-40 °C to 70 °C / -40 °F to 158 °F).

• Practical for long-term use in demanding and reliability-driven industrial conditions.