Do you drive your DC coil via a resistor and normally closed late break auxiliary contact according to ABB "... DC and AC operated contactors have the same magnet structure except the DC coil includes a resistor and a normally closed late break
auxiliary interlock. To order, substitute the code from the coil voltage selection chart and refer to the DC magnet coils chart for the price ... "?
The text is from document: http://www.galco.com/techdoc/abbg/ehdb220c2p-1l_dat.pdf
DC and AC operated contactors have the same magnet structure except the DC coil includes a resistor and a normally closed late break
auxiliary interlock.