Can an LRD overload relay be used on a DC system ?

Issue:
DC Motor overload protection

Product Line:
Tesys D contactors

Environment:
Products sold and used in the United States

Cause:
LRD overload relay used in a DC power circuit

Resolution:

Yes, this is fine below 300vdc, simply series connect the poles or use an LR3D overload relay without single phase sensitivity.
Please note while the Tesys D contactors are suitable, they are not UL listed for DC power circuits.

Publicerad för:Schneider Electric Sverige