Siemens 5SL6304-7 SENTRON Miniature Circuit Breaker 3P 4A C 6kA

The Siemens 5SL6304-7 (MLFB: 5SL6304-7) is a SENTRON 3-pole miniature circuit breaker rated at 4A with a Type C tripping characteristic and 6kA breaking capacity at 400V AC. Designed for residential buildings and infrastructure applications, it provides reliable overcurrent and short-circuit protection on DIN rail installations.

Technical specifications:

• MLFB: 5SL6304-7
• Manufacturer: Siemens
• Product line: SENTRON
• Product type: Miniature circuit breaker
• Number of poles: 3 (3P)
• Tripping characteristic: C
• Rated current: 4A (at 30°C); 3.81A at 40°C; 3.5A at 55°C
• Rated voltage (AC): 400V AC, 50/60Hz
• Maximum operating voltage (multi-phase AC): 440V
• Operating voltage (DC): max 62.5V per pole
• Insulation voltage: 440V AC (multi-phase)
• Breaking capacity: 6kA (EN 60898 / IEC 60947-2)
• Energy limitation class: 3
• IP rating: IP20 (with connected conductors)
• Overvoltage category: 3
• Degree of pollution: 2
• Power loss per pole: 0.7W at rated current
• Conductor cross-section: 0.75-25mm² (solid, stranded, and finely stranded)
• Tightening torque: 2.5-3Nm
• Dimensions (WxHxD): 54 x 90 x 76mm; installation depth 70mm
• Modular width: 3 units
• Mounting: any position; DIN rail
• Weight: 393g
• Operating temperature: -25°C to +45°C
• Storage temperature: -40°C to +75°C
• Mechanical service life: 10,000 operating cycles (typical)

Features and benefits:

• Halogen-free construction for reduced environmental impact
• Touch-protected terminals (IP20) for safe installation and maintenance
• Sealable design to prevent unauthorized adjustment
• Silicon-free, suitable for use in sensitive environments
• Compatible with supplementary installable devices for extended functionality
• Flexible conductor connection: solid, stranded, and finely stranded with core end processing

Applications:

• Branch circuit protection in residential buildings and infrastructure
• Motor and equipment protection where inrush current requires a Type C characteristic
• Distribution boards and consumer units on DIN rail systems
• Low-voltage AC and DC circuits up to 440V AC or 62.5V DC per pole

Compliant with EN 60898 and IEC 60947-2. Part of the Siemens SENTRON range.

Also known as: Siemens 5SL6304-7, Siemens SENTRON 3P 4A MCB, Siemens miniature circuit breaker 5SL6 C4.