'Overload Relay, Current Range 3.70 to 5.50A, For Use With TeSys K AC or DC IEC Contactor, Trip Class 10, Sensing Method Bimetallic, Features Single Phase Sensitivity, Differential, Number of Poles 3, Height 2.56 In., Depth 2.28 In., Width 1.77 In., Standards UL File/CCN E164353 / NKCR, CSA LR43364 3211 03, IEC 60947, CE, RoHS'