A9N21227 SCHNEIDER ELECTRIC

The A9N21227 from Schneider Electric's ProDis DT40 series is a Vigi K residual current circuit breaker (RCCB) designed to provide enhanced electrical safety. This 4.5kA RCCB features a 3P+N (three-pole plus neutral) configuration, making it suitable for three-phase electrical systems with a neutral conductor. It has a C-curve characteristic, which indicates its tripping behavior for overload and short-circuit protection, offering a balance between sensitivity and nuisance tripping avoidance. The rated current is 10A, specifying the maximum current the device can continuously carry without tripping under normal operating conditions. This RCCB is type AC, meaning it is designed to detect and respond to sinusoidal alternating current residual currents. With a sensitivity of 300mA, it will trip when a leakage current of 300mA or higher is detected, providing protection against electric shock and fire hazards. It is commonly used in residential, commercial, and industrial applications to protect circuits and equipment from earth faults. The A9N21227 helps ensure compliance with electrical safety standards and regulations. Its robust design and reliable performance make it a dependable choice for electrical protection.