Siemens 5SL6425-6 Miniature Circuit Breaker, 4-Pole, Type B, 25A, 6kA

The Siemens 5SL6425-6 is a high-quality 4-pole miniature circuit breaker from the reliable SENTRON series, engineered to provide robust protection for electrical circuits. This device is specifically designed to detect and interrupt overloads and short circuits, thereby safeguarding your electrical infrastructure and connected equipment. With a rated current of 25A and a B-characteristic, it offers precise response times suitable for standard electrical installations in both residential and commercial environments.

Advantages

This miniature circuit breaker stands out due to its high manufacturing standards and long-term operational reliability. The 4-pole configuration allows for the simultaneous disconnection of all phases and the neutral conductor, providing comprehensive safety during maintenance or fault conditions. Its compact design ensures easy integration into standard distribution boards, while the 6kA breaking capacity provides sufficient protection for typical electrical loads found in modern buildings.

Suitable for

• Residential electrical distribution boards
• Commercial office lighting and power circuits
• Protection of standard household appliances
• General electrical installations requiring 25A current rating

When it may not be suitable

This device is not intended for industrial applications requiring high-performance breaking capacities exceeding 6kA. It is also not suitable for circuits with high inrush currents, such as those powering large motors or transformers, where a C or D characteristic breaker would be required instead of the B-characteristic provided here.

Key specifications

• Number of poles: 4
• Rated current: 25A
• Tripping characteristic: B
• Breaking capacity: 6kA
• Series: SENTRON

How to use

The device is designed for mounting on a standard DIN rail within an electrical distribution cabinet. Installation should be performed by a qualified electrician to ensure all connections are secure and compliant with local electrical codes. Once mounted, the breaker is operated via the front-facing toggle switch, which indicates the status of the circuit. In the event of a trip, the switch will move to the center or off position, allowing for manual reset after the fault has been identified and cleared.

What to consider before purchase

• Verify that the 25A rated current matches the requirements of your specific circuit load.
• Ensure the 6kA breaking capacity is sufficient for the prospective short-circuit current at the installation point.
• Confirm that a 4-pole configuration is necessary for your specific wiring setup.
• Check the available space in your distribution board for a 4-module wide device.

Usage recommendations: Regularly inspect the circuit breaker for signs of physical damage or overheating. It is recommended to perform a functional test of the switching mechanism periodically to ensure continued operational readiness.