US 12,424,839 B2
Solenoid-based voltage imbalance protection
Chad R. Mittelstadt, Cedar Rapids, IA (US)
Assigned to Schneider Electric USA, Inc., Boston, MA (US)
Filed by Schneider Electric USA, Inc., Andover, MA (US)
Filed on Jul. 31, 2023, as Appl. No. 18/228,652.
Claims priority of provisional application 63/436,559, filed on Dec. 31, 2022.
Prior Publication US 2024/0222953 A1, Jul. 4, 2024
Int. Cl. H02H 3/28 (2006.01); H02H 1/00 (2006.01)
CPC H02H 3/28 (2013.01) [H02H 1/0007 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A solenoid-based voltage imbalance detector, comprising:
a housing having power line terminals and a neutral terminal;
coils coaxially arranged within the housing, each coil electrically connected to a respective power line terminal and the neutral terminal;
a metal plunger coaxially disposed between the coils within the housing, the metal plunger coaxially slidable between the coils; and
a trip arm pivotably mounted about a longitudinal axis thereof within the housing;
wherein the coils are configured to induce opposing electromagnetic force, the opposing electromagnetic force pushing on the metal plunger in opposite directions.