Siemens 5SL6150-6 Miniature Circuit Breaker 1P 50A B 6kA

The Siemens 5SL6150-6 (MLFB: 5SL6150-6) is a 1-pole SENTRON miniature circuit breaker rated at 50 A with tripping characteristic class B and a breaking capacity of 6 kA. Designed for AC 230/400 V networks at 50/60 Hz, it provides overcurrent and short-circuit protection in residential and infrastructure installations.

Technical specifications:

• MLFB: 5SL6150-6
• Manufacturer: Siemens
• Product line: SENTRON
• Product type: Miniature circuit breaker
• Number of poles: 1P
• Rated current: 50 A (at 30 °C); 46.97 A (at 40 °C); 42.01 A (at 55 °C)
• Tripping characteristic: Class B
• Supply voltage (AC): 400 V, 50/60 Hz
• Max operating voltage (multi-phase AC): 440 V
• Max operating voltage (DC): 62.5 V per pole
• Insulation voltage: 250 V (single-phase AC) / 440 V (multi-phase AC)
• Breaking capacity: 6 kA (EN 60898 / IEC 60947-2)
• Energy limitation class: 3
• Power loss per pole: 4 W
• IP rating: IP20 (with connected conductors)
• Overvoltage category: 3
• Operating temperature: -25 °C to +45 °C
• Storage temperature: -40 °C to +75 °C
• Conductor cross-section (solid/stranded/finely stranded): 0.75 - 25 mm²
• Tightening torque: 2.5 - 3 Nm
• Dimensions (WxHxD): 18 x 90 x 76 mm
• Installation depth: 70 mm
• Modular width: 1 module
• Net weight: 168 g
• Mounting: DIN rail, any position

Features and benefits:

• Halogen-free construction for reduced toxic emissions in case of fire
• Silicon-free design suitable for sensitive environments
• Sealable to prevent unauthorised adjustment after installation
• Touch-protected terminals (IP20) for safe installation and maintenance
• Compatible with supplementary devices for extended functionality
• Mechanical service life of 10,000 operating cycles

Applications:

• Final circuit protection in residential distribution boards
• Infrastructure and commercial building electrical installations
• Protection of wiring and equipment in AC distribution systems
• DC circuit protection up to 62.5 V per pole (e.g. battery systems)

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

Also known as: Siemens 5SL6150-6, Siemens SENTRON 1P 50A B-curve MCB.