Siemens 5SL6120-7 Miniature Circuit Breaker 1P 20A C 6kA

The Siemens 5SL6120-7 is a 1-pole SENTRON miniature circuit breaker rated at 20A with a type C tripping characteristic and 6kA breaking capacity. Designed for use in AC circuits up to 400V, it provides overcurrent and short-circuit protection for residential buildings and infrastructure. It meets the requirements of both EN 60898 and IEC 60947-2.

Technical specifications:

• MLFB: 5SL6120-7
• Manufacturer: Siemens
• Product line: SENTRON
• Number of poles: 1 (1P)
• Tripping characteristic: C
• Rated current: 20A at 30°C (18.79A at 40°C, 16.8A at 55°C)
• Breaking capacity: 6kA (EN 60898 / IEC 60947-2)
• Energy limitation class: 3
• Supply voltage (AC): 400V, 50/60 Hz
• Operating voltage (AC, multi-phase max): 440V
• Operating voltage (DC max): 62.5V per pole
• Insulation voltage: 250V (single-phase AC), 440V (multi-phase AC)
• Power loss at rated current: 2.2W per pole
• IP rating: IP20 (with connected conductors)
• Conductor cross-section: 0.75-25 mm² (solid, stranded, finely stranded)
• Tightening torque: 2.5-3 N·m (screw terminals)
• Dimensions (W x H x D): 18 x 90 x 76 mm
• Installation depth: 70mm
• Modular width: 1 unit
• Mounting position: any
• Net weight: 128g
• Operating temperature: -25°C to +45°C
• Storage temperature: -40°C to +75°C
• Overvoltage category: 3 / Degree of pollution: 2
• Mechanical service life: 10,000 operating cycles

Features and benefits:

• Halogen-free and silicon-free construction
• Sealable design for tamper prevention after installation
• Touch-protected terminals (IP20) with connected conductors
• Compatible with supplementary add-on devices
• Suitable for both AC and DC circuit applications (DC up to 62.5V per pole)
• Wide operating temperature range down to -25°C

Applications:

• Final circuit protection in residential distribution boards
• Single-pole overcurrent and short-circuit protection in infrastructure panels
• AC circuits up to 400V in consumer units and metering enclosures
• DC circuit protection up to 62.5V per pole

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

Also known as: Siemens 5SL6120-7, SENTRON 5SL6 1P C20 MCB.