5SL6440-7BB

Siemens 5SL6440-7BB is a miniature circuit breaker (MCB) designed for overcurrent protection in electrical systems. Here’s a detailed overview of its features and specifications:

Key Features:

1. Rated Current:
   • 40 A: Suitable for circuits with a maximum continuous current of 40 amperes.
2. Tripping Characteristic:
   • B Characteristic Curve: This characteristic is ideal for protecting general-purpose circuits. It trips quickly on short circuits and provides adequate protection against overloads.
3. Number of Poles:
   • 4-pole (4P): The breaker can disconnect all four conductors (three phases and neutral) simultaneously, ensuring comprehensive protection for three-phase systems.
4. Breaking Capacity:
   • 6 kA at 230/400 V AC: The MCB can safely interrupt fault currents up to 6000 amperes, protecting the circuit from high fault currents.
5. Voltage Rating:
   • 230/400 V AC: Suitable for standard low-voltage systems, commonly found in residential, commercial, and industrial applications.
6. Mounting:
   • DIN Rail Mounting: Designed for easy installation on standard DIN rails, which simplifies installation and maintenance.
7. Compact Design:
   • The MCB’s compact size allows for efficient use of space in electrical distribution panels.

Technical Specifications:

• Manufacturer: Siemens
• Product Line: 5SL6 series
• Model Number: 5SL6440-7BB
• Type: Miniature Circuit Breaker (MCB)
• Rated Current: 40 A
• Tripping Characteristic: B Curve
• Number of Poles: 4 (3P+N)
• Breaking Capacity: 6 kA
• Rated Voltage: 230/400 V AC
• Mounting: DIN Rail
• Standards Compliance: Complies with IEC/EN 60898-1

Applications:

1. Residential:
   • Protecting electrical circuits in homes, including lighting and general power outlets.
2. Commercial:
   • Ensuring the safety of electrical circuits in office buildings, retail spaces, and other commercial properties.
3. Industrial:
   • Protecting machinery and equipment in industrial settings from overcurrent and short circuits.
4. Distribution Panels:
   • Used in electrical distribution panels for branch circuit protection.
5. Three-Phase Systems:
   • Ideal for protecting three-phase electrical systems with neutral conductors.

Installation and Maintenance:

• Easy Installation: The DIN rail mounting system allows for quick and easy installation in electrical panels.
• Maintenance: Minimal maintenance required, with periodic inspection to ensure reliable operation.

Safety and Compliance:

• Safety: Designed to protect electrical circuits from overcurrent conditions, preventing potential fire hazards and equipment damage.
• Compliance: Meets international standards (IEC/EN 60898-1), ensuring reliable and safe operation.

The Siemens 5SL6440-7BB MCB provides reliable overcurrent protection for a variety of applications, making it a versatile choice for residential, commercial, and industrial electrical systems. Its robust design and adherence to safety standards ensure long-term reliability and safety.