Residual Current Devices

Residual current devices and leakage protection modules that help detect ground faults and improve safety in AC shore power and onboard distribution systems. Residual-current devices detect an imbalance between conductors and can disconnect an AC circuit when leakage reaches the device's trip threshold. Selection depends on rated current, sensitivity in milliamps, poles, supply characteristics and applicable standards. A residual-current module is not always an overcurrent breaker; verify whether it requires a paired protective device.