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On an LC1D128, what do the R1, R2, R3 and R4 terminal markings indicate?

Product Line:
Tesys D line Contactors
Terminals R1/R2 and R3/R4 indicate the normally closed power poles of this 4-pole contactor while terminals 1/2 and 3/4 indicate the normally open power poles.

CTA-ID : 2032005
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