Siemens 5SL6320-7 Miniature Circuit Breaker, 3-Pole, C-Characteristic, 20A

The Siemens 5SL6320-7 is a professional-grade 3-pole miniature circuit breaker engineered to provide reliable protection for electrical circuits against overloads and short circuits. Designed for high performance in both residential and industrial environments, this device ensures the safety of electrical distribution systems by interrupting power flow when faults are detected. Its robust construction and precise engineering make it a dependable component for modern electrical installations.

Advantages

This circuit breaker offers exceptional reliability and durability, ensuring long-term protection for your electrical infrastructure. The C-characteristic design allows for versatile application, effectively managing moderate inrush currents common in various electrical devices. Its compact 3-pole configuration facilitates efficient space utilization within distribution boards, while the high-quality materials used in its manufacturing guarantee consistent performance under standard operating conditions.

Suitable for

• Residential electrical distribution boards
• Commercial building power systems
• Industrial machinery and equipment circuits
• Protection of lighting and heating installations

When it may not be suitable

This device is not intended for use in circuits requiring specialized protection characteristics, such as those with extremely high inrush currents that might cause nuisance tripping. It is also not suitable for direct current (DC) applications unless specifically rated for such use, as it is designed primarily for alternating current (AC) systems.

Key specifications

• Number of poles: 3
• Rated current: 20A
• Tripping characteristic: C
• Mounting type: DIN rail
• Rated voltage: 400V AC

How to use

The miniature circuit breaker should be installed by a qualified electrician into a standard DIN rail distribution board. Ensure that the power supply is disconnected before beginning the installation process. Secure the device firmly onto the rail and connect the incoming and outgoing supply cables to the appropriate terminals, ensuring all connections are tightened to the manufacturer's specified torque settings to prevent overheating.

What to consider before purchase

• Verify that the 20A rating matches the requirements of your specific circuit load.
• Ensure the 3-pole configuration is compatible with your existing electrical distribution system.
• Check that the C-characteristic is appropriate for the types of appliances connected to the circuit.
• Confirm that the installation environment meets the standard temperature and humidity requirements for electrical switchgear.

Usage recommendations

Regularly inspect the circuit breaker for any signs of physical damage or discoloration. It is recommended to perform periodic testing of the switching mechanism to ensure it remains functional and to verify that all terminal connections remain tight over time.