Siemens circuit breaker, 2-pole, 6kA, 400V, 4A Part number 5SY6204-7

Product Overview

The Siemens 5SY6204-7 is a 2-pole miniature circuit breaker from the SENTRON 5SY6 series, rated for 4 A with a Class C tripping characteristic and a breaking capacity of up to 6 kA (EN 60898) or up to 30 kA (IEC 60947-2) at 400 V AC. It is designed for compact distribution board installations, providing short-circuit and overload protection in industrial and infrastructure applications.

Key Features

• 2-pole miniature circuit breaker (2P) with Class C tripping characteristic
• Rated current: 4 A
• Breaking capacity: 6 kA at 400 V (EN 60898) / up to 30 kA (IEC 60947-2)
• Compact width: 36 mm (2 modular units), installation depth 70 mm
• Screw-type terminals, suitable for solid, stranded or finely stranded conductors
• Sealable toggle, halogen-free and silicon-free materials for enhanced safety

Technical Specifications

• Article Number: 5SY6204-7
• Rated Current (In): 4 A
• Poles: 2 (2 P)
• Tripping Characteristic: Class C
• Rated Insulation Voltage (Ui): 440 V
• Rated Operating Voltage: 400 V AC (50/60 Hz)
• Breaking Capacity (Icn): 6 kA according to EN 60898 at 400 V
• Ultimate Breaking Capacity (Icu): Up to 30 kA according to IEC 60947-2
• Width: 36 mm (2 modular units)
• Height: 90 mm
• Depth: 76 mm (Installation depth 70 mm)
• Ambient Operating Temperature: –25 °C to +55 °C
• Connectable Conductor Cross-Section: Solid or stranded 0.75…35 mm²; finely-stranded with end processing up to 25 mm²
• Rated Torque for Terminals: 2.5…3.5 N·m

Compliance & Certifications

• Designed to EN 60898-1 and EN 60947-2 standards
• Over-voltage category III, pollution degree 3
• IP20 protection rating (with connected conductors)
• Mechanical service life: approximately 10,000 switching cycles

Applications

The 5SY6204-7 is ideal for compact electrical distribution panels in commercial, industrial and infrastructure installations where reliable two-pole protection is required at low current levels. Typical uses include small sub-feeders, lighting circuits, control panel supplies and modules where space is limited but high breaking capacity and protective performance remain essential.