Further information for Schneider Electric 33681 - adjustable time delay relay for voltage release MN - 100/130 V AC/DC
This time delay unit is an auxiliary device that can be combined with an undervoltage release (MN). It must be combined with a 125 VDC MN undervoltage release. It prevents false trips due to temporary voltage dips lasting from 200 ms to 3 s. The voltage supply is 100-130 VDC or 100-130 VAC 50/60 Hz. This time delay unit has 4 adjustable steps (0.5 s - 1 s - 1.5 s - 3 s). It is an external accessory that can be installed in the switchgear.