It is a SDx module that provides alarming and fault differentiation. It is used on Compact NSXm earth leakage circuit breakers (ELCB) equipped with Micrologic Vigi 4.1 trip unit. This module has 2 NO/NC dry contacts that can be assigned to a different status. Its operational voltage is from 24V up to 250V AC or DC, and the maximum current per contact is 5 A.