Siemens Circuit breaker, 3-pole, 10kA, 6A Part number 5SJ4306-7HG42

Product Overview

The Siemens 5SJ4306-7HG42 is a SENTRON 5SJ4 miniature circuit breaker (MCB), 3-pole, 6A, tripping characteristic C, designed for reliable overload and short-circuit protection in residential, commercial and industrial electrical distribution. It supports AC applications up to 400V and DC applications as specified within the 5SJ4 series rating range. Compact DIN-rail mounting makes it suitable for panel boards, machinery control, feeder protection and equipment circuits requiring dependable C-curve protection.

Key Features

• 3-pole miniature circuit breaker — SENTRON 5SJ4 series
• Rated current: 6A
• Tripping characteristic: Type C (thermal-magnetic)
• High breaking capacity for robust fault protection
• Suitable for AC mains up to 400V
• DIN-rail mountable — 35mm standard rail
• Compact design for space-efficient distribution boards
• Screw terminal wiring — secure conductor connection
• Touch-safe IP20 with connected conductors
• Halogen-free housing and suitable for global installation standards

Technical Specifications

• Article Number: 5SJ4306-7HG42
• Product Type: Miniature Circuit Breaker (MCB)
• Series: SENTRON 5SJ4
• Rated Current: 6A
• Poles: 3-pole
• Tripping Curve: C-curve
• Rated Operating Voltage: up to 400V AC
• Rated Insulation Voltage Ui: 440V
• Breaking Capacity: high capacity depending on installation category
• Terminal Type: Screw terminals
• Conductor Size: typically 0.75–25mm² for main conductors
• Protection Class: IP20 (with connected conductors)
• Mounting: DIN-rail, 35mm standard
• Mechanical Endurance: approx. 10 000 switching cycles
• Typical Dimensions: 54mm width × 76mm depth (5SJ standard 3-pole format)

Compliance & Standards

• Part of Siemens SENTRON protection portfolio
• Manufactured in accordance with IEC and EN standards for circuit protection
• Suitable for global use in electrical distribution systems

Applications

Ideal for three-phase feeder circuits, branch circuits, control panels, machine protection and general distribution where 6A protection is required. Suitable for residential sub-DBs, commercial installations, industrial control boards and equipment protection with moderate inrush current characteristics.