Siemens Miniature circuit breaker, 1-pole, B, 230/400V, 6kA, 4A Part number 5SY6104-6

Product Overview

The Siemens 5SY6104-6 is a SENTRON series miniature circuit breaker (MCB) rated for 230/400 V AC with a breaking capacity of 6 kA under EN 60898 conditions. It is a single-pole B-characteristic device rated at 4 A, designed for installation in residential, commercial, and light industrial distribution boards where compact overcurrent protection is required.

Key Features

• SENTRON miniature circuit breaker in compact 18 mm width
• Rated current: 4 A
• Tripping characteristic: B (suitable for general purpose circuits with low inrush current)
• Single-pole design (1 P) for single-phase systems
• Breaking capacity: 6 kA (EN 60898); up to 30 kA (IEC 60947-2) for enhanced safety
• Halogen-free, silicon-free housing for safer installations
• DIN-rail mountable with quick-assembly system and screw terminals, connectable conductor cross-sections up to 35 mm²
• Sealable front and non-neutral switching version for compact circuit protection

Technical Specifications

• Article Number: 5SY6104-6
• Product Series: SENTRON 5SY6 MCBs
• Number of Poles: 1 P
• Rated Current (In): 4 A
• Rated Operational Voltage: 230/400 V AC (50/60 Hz)
• Tripping Characteristic: B
• Rated Short-Circuit Breaking Capacity (Icn) – EN 60898: 6 kA
• Rated Short-Circuit Breaking Capacity (Icu) – IEC 60947-2: Up to 30 kA
• Width: 18 mm (1 modular unit)
• Height: 90 mm
• Depth / Installation Depth: 76 mm / 70 mm
• Protection Class (Front): IP20 (with connected conductors)
• Ambient Operating Temperature: –25 °C … +55 °C

Compliance & Certifications

• Designed and manufactured by Siemens to meet global electrical safety standards
• Complies with IEC/EN 60898-1 (for MCBs) and IEC/EN 60947-2 (for switchgear) standards
• Sealable front face for use in secured distribution boards

Applications

Ideal for domestic, residential and light commercial electrical distribution systems. Suitable for protecting individual branch circuits such as lighting, socket outlets, small motors or equipment with limited inrush currents. Installing in compact distribution boards where space is at a premium.