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Difference Between LR2K and LR7K Overload Relays

Issue:
What is the difference between LR2K and LR7K overloads (eg LR2K0316 and LR7K0316)?

Product Line:
Contactors and Starters-IEC

Environment:
K-Line Overload Relays

Cause:
Product Specifications

Resolution:
LR2K is for three phase or balanced loads. LR7K is for single phase or unbalanced loads.