This is a 
ECSTA1V1308-1020-R Current Sensing Transformer , 1:20, 220 µH, 15 A, 50kHz to 1MHz, 0.21 ohm product from EATON BUSSMANN with the model number ECSTA1V1308-1020-R
Other details
| Brand | 
EATON BUSSMANN | 
| Part Number | 
 ECSTA1V1308-1020-R | 
| Quantity | 
Each (Supplied on Cut Tape) | 
| Technical Data Sheet EN | 
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