Siemens Miniature circuit breaker, 2-pole, C, 400V, 6kA, 20A Part number 5SL6220-7

Product Overview

The Siemens 5SL6220-7 is a 2-pole miniature circuit breaker (SENTRON Basic Devices) rated at 20 A, with a C-curve tripping characteristic. It supports operation up to 400 V AC and features a breaking capacity of up to 6 kA (at 400 V AC) for reliable protection in industrial and infrastructure installations.

Key Features

• Number of poles: 2 (2P)
• Rated Current: 20 A
• Tripping Curve: C
• Rated Voltage: 400 V AC (multi-phase up to 440 V)
• Breaking Capacity: 6 kA (EN 60898 / IEC 60947-2)
• Width: 36 mm (2 modular widths)
• Protection Class: IP20 (with connected conductors)
• Halogen-free & silicon-free construction

Technical Specifications

• Product Series: SENTRON 5SL6 Miniature Circuit Breakers
• Article Number: 5SL6220-7
• Rated Operational Current (AC-1 / AC-3): 20 A (at 30 °C)
• Insulation Voltage (Ui): 440 V AC (multi-phase)
• Operating Voltage Range: 20…400 V AC (frequency 50/60 Hz); DC up to ~62.5 V
• Power Loss: Approx. 2.2 W per pole at rated current
• Mechanical Service Life: ~10,000 switching cycles
• Ambient Operating Temperature: –25 °C to +45 °C
• Mounting Depth: 70 mm | Width: 36 mm | Height approx. 90 mm
• Connectable Conductor Cross-Section: 0.75 … 25 mm² (solid/stranded)
• Energy Limitation Class: 3

Compliance & Certifications

• Meets standards EN 60898-1 and IEC/EN 60947-2 for miniature circuit breakers
• CE-marked and RoHS compliant
• Halogen-free, sealable design for safe installations
• Protection category: Overvoltage III, Pollution Degree 2

Applications

Ideal for branch-circuit protection and overload/short-circuit guarding in industrial, infrastructure, and commercial electrical distribution systems. Commonly used in control panels, distribution boards, and installations where a reliable 20 A two-pole breaker with compact width and high breaking capacity is required.