30LK-4

Heavy-duty industrial 3-pole field modification thermal overload relay conversion kit engineered to update legacy Westinghouse contactors and motor starters, specifically sized to interface with NEMA Size 4 electrical controls. Equivalents: Eaton 30LK-4, Westinghouse 30LK4, Cutler-Hammer 30LK-4. Real-Life Examples: High-horsepower industrial rock crusher assemblies, heavy facility power distribution starters, and large-scale plant processing machinery motors.