Siemens 5SL6350-6 Miniature Circuit Breaker 3P 50A B 6kA 400V

The Siemens 5SL6350-6 (MLFB: 5SL6350-6) is a 3-pole SENTRON miniature circuit breaker rated at 50 A with a B tripping characteristic and 6 kA breaking capacity at 400 V AC. Designed for residential buildings and infrastructure, it provides overcurrent and short-circuit protection on DIN rail installations.

Technical specifications:

• MLFB: 5SL6350-6
• Manufacturer: Siemens
• Product line: SENTRON
• Product type: Miniature circuit breaker
• Number of poles: 3 (3P)
• Tripping characteristic: B
• Rated current: 50 A (at 30 °C); 46.97 A (at 40 °C); 42.01 A (at 55 °C)
• Rated supply voltage: 400 V AC, 50/60 Hz
• Maximum operating voltage (AC, multi-phase): 440 V
• Maximum operating voltage (DC): 62.5 V per pole
• Insulation voltage (Ui): 440 V AC (multi-phase)
• Breaking capacity: 6 kA (EN 60898 / IEC 60947-2)
• Energy limitation class: 3
• Overvoltage category: 3
• Degree of pollution: 2
• IP rating: IP20 (with connected conductors)
• Power loss per pole: 4 W at rated current
• Connectable conductor cross-section: 0.75 - 25 mm² (solid, stranded, finely stranded)
• Tightening torque: 2.5 - 3 Nm
• Dimensions (WxHxD): 54 x 90 x 76 mm; installation depth 70 mm
• Modular width: 3 units
• Net weight: 482 g
• Operating temperature: -25 °C to +45 °C
• Storage temperature: -40 °C to +75 °C
• Mounting position: any

Features and benefits:

• Touch protection built in (IP20) for safe installation
• Halogen-free and silicon-free construction
• Sealable design to prevent unauthorized adjustment
• Compatible with supplementary devices for expanded functionality
• Suitable for both AC and DC circuits (not mixed); accommodates battery charging voltage peaks up to 72 V
• Mechanical service life of up to 10,000 operating cycles

Applications:

• Final circuit protection in residential buildings and infrastructure installations
• Overcurrent and short-circuit protection on distribution boards
• DIN rail panel builds requiring a 3-pole 50 A B-curve breaker
• Installations where halogen-free, sealable devices are required

Compliant with EN 60898 and IEC 60947-2. Part of the Siemens SENTRON range.

Also known as: Siemens 5SL6350-6, Siemens SENTRON 3-pole MCB 50A B-curve.