A9Y83740 SCHNEIDER ELECTRIC

The A9Y83740 is an add-on residual current device (RCD) from the Schneider Electric Acti9 Vigi iC40 series, designed to enhance electrical safety in residential and commercial applications. This device is a 3P+N (three-pole plus neutral) configuration, making it suitable for three-phase electrical systems with a neutral conductor. It has a rated current of 40A, indicating the maximum current it can handle continuously without tripping. The RCD is designed to detect residual currents, also known as earth leakage currents, which can be dangerous and pose a risk of electric shock or fire. It trips at a residual current of 300mA, providing a balance between sensitivity and nuisance tripping. The AC type designation signifies that it is designed to detect and respond to alternating current residual currents. This add-on device works in conjunction with a miniature circuit breaker (MCB) to provide comprehensive protection against both overcurrents and residual currents. By combining these functionalities, the A9Y83740 ensures a safer electrical installation, protecting people and property from electrical hazards. Its robust design and compliance with international standards make it a reliable choice for electrical protection.