Westinghouse, CT-2.5 Current Transformer, Ratio 600:5A, 25-400Hz, Rated Insulation Class 2.5 KV: Suitable For 2890/500 Y Volt System, Full Wave Impulse Test Level 45 KV:60Hz, 1 min. Test 15 KV, Cat# 1435495B1435495B Current Transformer by Eaton, Cutler-Hammer or Westinghouse