17 Under voltage trip device (UVT)
UVTSA450-4SWRFSU05 Undervoltage trip.AC100-120/200-240/380-450V, TD, 4pole, NF/DSN400AF,630AF
17 Under voltage trip device (UVT)
UVTSA450-8SWRFSU05 Undervoltage trip.AC 100-120/200-240/380-450V, Time delay, 4pole, NF/DSN 800