high trip threshold accuracy is provided;

the option of phase priority bringing in/exclusion is available;

switching to the phase with unallowable parameters is not effected;

any power load can be energized;

an automatic selection of the optimum phase;

a high speed of switching is provided;

monitoring of voltage presence & quality on phases;

when sticking of magnetic starter power contacts in external circuit occurs the switching is disabled;

starting transient voltage drops ignoring is provided;

voltage hysteresis exists;

higher power of output contacts allows in some instances to do without magnetic starters;

there are four independent wide-ranged adjustments for basic parameters;

there are three LEDs that indicate the phase the load is energized from and the fault-indicating LED;

due to digital technology the relay trip settings are adjusted quite accurate and so one doesn’t need to read voltage on the control voltmeter;

a procedure of trip thresholds setting is very simple;

a wide range of operating temperatures is provided;

mounted on a standard DIN-rail;

low power demand;

small dimensions and small weight of the relay.