ABB S403M MCB, 3P, 63A Curve C, 440V AC, 12V DC, 15 kA Breaking Capacity

This MCB is a 3 pole device specifically designed for commercial and industrial applications. With a current rating of 63A and a breaking capacity of 15 kA, it provides reliable protection in various electrical installations. The device features thermal electromechanical tripping mechanisms, ensuring safe operation under overload and short circuit conditions. Its compact design allows for easy installation on a DIN rail, with dimensions of 54mm in width, 82mm in length, and 82mm in depth.

• Offers effective overload protection through thermal tripping
• Includes an electromechanical mechanism for short circuit safety
• Designed for use in both commercial and industrial settings
• Supports a wide operational voltage range up to 440V AC
• Easy installation with a standard DIN rail mounting option
• Robust construction ensures long-lasting performance under normal conditions

• Utilised in commercial electrical systems for load management
• Protects industrial machinery from electrical faults
• Suitable for critical power requiring high reliability
• Effective in multi-phase systems with three-pole connections

When choosing, consider the current rating, breaking capacity, and the specific tripping characteristics needed for your application. It's crucial to ensure that the MCB meets the electrical load requirements and complies with relevant standards.

The device incorporates a delayed thermal mechanism for overload protection, which allows temporary current surges while swiftly disconnecting during persistent overloads. The electromechanical mechanism activates instantly in the event of a short circuit, providing comprehensive protection.

The breaking capacity indicates the maximum fault current the device can safely interrupt without damage. A breaking capacity of 15 kA ensures effective protection in scenarios where high fault currents could occur, essential for safeguarding equipment and infrastructure.