ABB S201 C40 Miniature Circuit Breaker, 1-Pole, 40A

The ABB S201 C40 is a professional-grade 1-pole miniature circuit breaker engineered to provide robust protection for electrical circuits. This device is designed to safeguard residential, commercial, and industrial installations by effectively detecting and interrupting overloads and short circuits. Built with high-quality materials, it ensures consistent performance and long-term reliability in various electrical distribution systems.

Advantages

This circuit breaker features a dual-action tripping mechanism that combines delayed thermal protection for overloads with an electromechanical system for rapid short-circuit response. Its current-limiting design helps minimize potential damage to downstream equipment during fault conditions. The compact construction allows for efficient space utilization within electrical panels, and the ability to mount bottom-fitting auxiliary contacts further optimizes installation space by up to 50 percent.

Suitable for

• Residential electrical distribution boards
• Commercial building power systems
• Industrial control panels
• Protection of lighting and general-purpose circuits

This device may not be suitable for applications requiring a different tripping characteristic, such as B, D, K, or Z curves, which are tailored for specific load types like high-inrush motors or sensitive electronics. It is also not intended for use in circuits exceeding its 40A rated current or 6kA breaking capacity limits.

Key specifications

• Number of poles: 1
• Rated current: 40A
• Tripping characteristic: C-curve
• Breaking capacity: 6 kA
• Compliance: IEC/EN 60898-1, IEC/EN 60947-2, UL1077, CSA 22.2 No. 235

The circuit breaker is designed for DIN-rail mounting within a standard distribution enclosure. Installation should be performed by a qualified electrician to ensure all connections are secure and compliant with local electrical codes. Once installed, the toggle switch allows for manual operation to disconnect or reconnect the circuit as needed.

What to consider before purchase

• Verify that the 40A rating matches your circuit requirements
• Ensure the C-curve characteristic is appropriate for your specific load
• Check available space in your distribution board for installation
• Confirm compatibility with existing DIN-rail systems

Usage recommendations: Always ensure the power supply is disconnected before attempting installation or maintenance. Regularly inspect the device for signs of wear or damage and test the circuit breaker periodically to ensure it remains in proper working order.