0611CT1603

Time Delay Unit for Undervoltage Release

  • A time delay unit for the MN eliminates the risk of nuisance tripping due to a transient voltage dip lasting less than 200 ms for fixed delay units and up to 3 seconds for adjustable units. For shorter micro-outages, a system of capacitors provides temporary supply to the MN at V > 0.7 Vn to ensure not tripping.

  • The correspondence between MN and time-delay units is shown below.

Time Delay Unit for Undervoltage Release (MN)

Time Delay Unit

Composed of:

Catalog Number

MN 48 Vac 50/60 Hz with Fixed Time Delay

MN 48 Vac

LV426802

Delay Unit 48 Vac 50/60 Hz

LV429426

MN 220-240 Vac 50/60 Hz with Fixed Time Delay

MN 250 Vac

LV426804

Delay Unit 220-240 Vac 50/60 Hz

LV429427

MN 48 Vac/Vdc 50/60 Hz with Adjustable Time Delay (≥ 200 ms)

MN 48 Vdc

LV426802

Delay unit 48 Vac/Vdc 50/60 Hz

S33680

MN 110-130 Vdc/Vac 50/60 Hz with Adjustable Time Delay (≥ 200 ms)

MN 125 Vdc

LV426803

Delay unit 100-130 Vac/Vdc 50/60 Hz

S33681

MN 220-250 Vac/Vdc 50/60 Hz with Adjustable Time Delay (≥ 200 ms)

MN 250 Vdc

LV426815

Delay Unit 200-250 Vac/Vdc 50-60 Hz

S33682

QR code for this page

Was this helpful?