Siemens 5SL6125-7 Miniature Circuit Breaker, 1-Pole, C-Characteristic, 25A, 6kA

The Siemens 5SL6125-7 is a professional-grade 1-pole miniature circuit breaker engineered to provide robust protection for electrical circuits. With a rated current of 25A and a C-characteristic tripping curve, this device is specifically designed to handle moderate inrush currents, making it a reliable choice for various electrical distribution systems. It offers a breaking capacity of 6kA, ensuring that it can effectively interrupt fault currents to prevent damage to wiring and connected equipment.

Advantages

This circuit breaker stands out due to its high manufacturing standards and long-term operational reliability. The Siemens design ensures consistent performance in both residential and commercial environments, providing a stable solution for circuit protection. Its compact 1-pole construction allows for efficient use of space within distribution boards, while the C-characteristic makes it versatile enough to manage standard inductive loads without nuisance tripping.

Suitable for

• Residential electrical distribution boards
• Commercial lighting and power circuits
• Protection of household appliances with moderate starting currents
• General purpose electrical installations

When it may not be suitable

This device is not intended for high-power industrial machinery that requires D-characteristic breakers to handle significant motor starting currents. It is also not suitable for applications requiring multi-pole switching, as this is a single-pole unit designed for phase protection only.

Key specifications

• Rated current: 25A
• Number of poles: 1
• Tripping characteristic: C
• Breaking capacity: 6kA
• Mounting type: DIN rail

How to use

The device is designed for installation on a standard 35mm DIN rail within an electrical distribution enclosure. Installation should be performed by a qualified electrician in accordance with local electrical codes. The wire is secured into the terminal clamps, ensuring a tight connection to prevent overheating. Once installed, the toggle switch can be used to manually disconnect or reconnect the circuit as needed.

What to consider before purchase

• Verify that the 25A rating matches your circuit load requirements
• Ensure the C-characteristic is appropriate for your specific load type
• Confirm that the 6kA breaking capacity meets the short-circuit current rating of your installation
• Check available space in your distribution board for a 1-pole module

Usage recommendations

Always ensure the power supply is completely disconnected before attempting to install or replace the circuit breaker. Regularly inspect the terminals for signs of heat damage or loose connections to maintain system safety.