Interconnect device for use in islanding a microgrid

A system for coupling power between a microgrid and a power distribution grid, comprising:

• a distributed energy resource (DER) for generating power within the microgrid;
• and
• an interconnect device, coupled to the microgrid and the power distribution grid, for electrically coupling the microgrid to and from the power distribution grid, comprising:
• an overcurrent protection component (OPC) for interrupting a circuit during an overcurrent condition;
• and
• a contactor component, coupled in series with the OPC and independently operable from the OPC, comprising:
• a set of contacts movable between a first position and a second position;
• a first coil energizable to move the set of contacts from the first position into the second position;
• and
• a second coil energizable, independently of the first coil, to maintain the contacts in the second position after the first coil is de-energized until a level of current flowing through the set of contacts is less than a lower current level.