ABB SZ203-C10 Miniature Circuit Breaker, 3-Pole, 10A, 6kA

The ABB SZ203-C10 is a high-performance 3-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. By maintaining consistent electrical flow and preventing hazardous conditions, it serves as a critical component in modern power distribution systems.

Advantages

This miniature circuit breaker offers exceptional reliability and durability, meeting stringent industry standards for electrical safety. Its 3-pole configuration allows for the simultaneous protection of three phases, making it an ideal choice for three-phase power supply systems. The device is built to withstand demanding operational conditions while ensuring precise tripping characteristics, which helps in minimizing downtime and preventing damage to sensitive electrical infrastructure. Its compact design facilitates efficient installation in standard distribution boards, contributing to a clean and organized electrical setup.

Suitable for

• Residential electrical distribution boards
• Commercial building power systems
• Three-phase motor protection
• General lighting and power circuits
• Small industrial machinery installations

When it may not be suitable

This circuit breaker is not intended for use in high-voltage industrial power grids or applications requiring a breaking capacity higher than 6kA. It is also not suitable for direct current (DC) applications unless specifically rated for such use, as it is primarily designed for alternating current (AC) systems.

Key specifications

• Number of poles: 3
• Rated current: 10A
• Breaking capacity: 6kA
• Tripping characteristic: C
• Mounting type: DIN rail

How to use

The ABB SZ203-C10 should be installed by a qualified electrician in accordance with local electrical codes and safety regulations. The device is designed for mounting onto a standard DIN rail within a distribution enclosure. Ensure that the supply cables are securely connected to the input terminals and that the load cables are connected to the output terminals, maintaining proper torque settings as specified by the manufacturer. Once installed, the breaker can be manually switched on or off using the toggle lever on the front panel.

What to consider before purchase

• Verify that the 10A 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 the 3-pole configuration is compatible with your electrical supply system.
• Check the available space in your distribution board for proper DIN rail mounting.

Usage recommendations

Regularly inspect the circuit breaker for any signs of physical damage or discoloration. It is recommended to perform periodic testing of the tripping mechanism to ensure the device remains fully functional and capable of providing the necessary protection for your electrical installation.