ABB SZ201-C25 Miniature Circuit Breaker, 1-Pole, 25A, 6kA

The ABB SZ201-C25 is a high-performance 1-pole miniature circuit breaker engineered to provide robust protection for electrical circuits in both residential and commercial environments. This device is designed to detect and interrupt overcurrents, effectively safeguarding wiring and connected equipment from the risks associated with overloads and short circuits. Its compact design allows for seamless integration into standard distribution boards, ensuring reliable operation and enhanced safety for modern electrical infrastructures.

Advantages

This miniature circuit breaker offers exceptional reliability and durability, meeting stringent industry standards for electrical protection. Its precise tripping mechanism ensures that the circuit is disconnected promptly during a fault, minimizing the risk of damage to the electrical system. The robust construction of the unit supports long-term operational efficiency, reducing the need for frequent maintenance and providing peace of mind for property owners and electrical installers alike.

Suitable for

• Residential electrical distribution boards
• Commercial building power systems
• Protection of lighting circuits
• General purpose branch circuit protection

When it may not be suitable

This device is not intended for use in circuits requiring multi-pole disconnection, such as three-phase motor applications, as it only protects a single pole. It is also not suitable for environments where the prospective short-circuit current exceeds the rated 6kA breaking capacity.

Key specifications

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

How to use

The device should be installed by a qualified electrician onto a standard DIN rail within a distribution board. Ensure that the supply voltage matches the specifications of the breaker before connection. The input cables should be securely fastened to the terminals, ensuring proper torque is applied to prevent loose connections. Once installed, the toggle switch can be moved to the ON position to energize the circuit. In the event of a trip, the switch will move to the OFF or middle position, indicating a fault that should be investigated before resetting.

What to consider before purchase

• Verify that the 25A rating matches your circuit load requirements
• Ensure the 6kA breaking capacity is sufficient for your installation's fault level
• Confirm that a single-pole device is appropriate for your specific wiring configuration
• Check available space on the DIN rail within your distribution board

Usage recommendations

Regularly inspect the circuit breaker for any signs of physical damage or discoloration. It is recommended to perform a functional test of the installation by a professional periodically to ensure the protection mechanism remains responsive and effective.