Siemens Miniature circuit breaker, 3-pole, curve C, 400V, 6kA, 4A, 70mm Part number 5SY6304-7

Product Overview

The Siemens SENTRON 5SY6304-7 is a miniature circuit breaker (MCB), 3-pole, designed for 400 V AC systems, with a 6 kA breaking capacity and C-type trip characteristic. It is suitable for protection of industrial installations, switchboards and control panels where compact size, high breaking capacity and reliable overload/short-circuit protection are required.

Key Features

• 3-pole miniature circuit breaker (MCB) in the Siemens SENTRON 5SY6 series
• Rated current: 4 A
• Rated operational voltage: 400 V AC
• Breaking capacity: 6 kA at 400 V (AC) typical
• C-type tripping characteristic for general application protection
• Compact construction allowing DIN rail or panel mounting in standard low-voltage distribution systems

Technical Specifications

• Product Series: Siemens SENTRON 5SY6 Miniature Circuit Breaker
• Article Number: 5SY6304-7
• Number of Poles: 3
• Rated Current (In): 4 A
• Rated Operational Voltage (Ue): 400 V AC
• Breaking Capacity (Icu): 6 kA at AC (400 V) approximate
• Tripping Characteristic: C-curve
• Dimensions (Approx.): Height: 90 mm; Width: 54 mm; Depth: 70-76 mm (depending on variant) :contentReference[oaicite:0]{index=0}
• Net Weight (Approx.): 0.461 kg :contentReference[oaicite:1]{index=1}
• Protection Class: IP20 (with connected conductors) :contentReference[oaicite:2]{index=2}
• Mechanical Service Life: ~10,000 switching cycles typical :contentReference[oaicite:3]{index=3}

Compliance & Certifications

• Designed in accordance with IEC/EN 60898-1 and IEC/EN 60947-2 standards for miniature circuit breakers
• Toggle handle and terminal covers meet Siemens safety and quality standards for industrial installations
• RoHS-compliant and meets environmental protection directives

Applications

This 5SY6304-7 miniature circuit breaker is ideal for use in low-voltage industrial distribution boards, control panels and machine installations where compact 3-pole protection is required. It offers reliable overload and short-circuit protection in 400 V systems, suitable for general-purpose duty in industrial, commercial and infrastructure environments.