This part is a kind of semiconductor called 32NAB125T12.
Function of this product has SKIIP32NAB125T12.
Manufacturers : Semikron International
Image and pinout :

Some of the text within the PDF file :
SKiiP 32 NAB 12 Absolute Maximum Ratings Symbol Inverter VCES VGES IC ICM IF = –IC IFM = –ICM Conditions 1) Values 1200 ± 20 65 / 45 130 / 90 60 / 40 120 / 80 1500 35 700 2400 – 40 . . . + 150 – 40 . . . + 125 2500 Units V V A A A A V A A A2s °C °C V Theatsink = 25 / 80 °C tp < 1 ms; Theatsink = 25 / 80 °C Theatsink = 25 / 80 °C tp < 1 ms; Theatsink = 25 / 80 °C MiniSKIIP 3 SEMIKRON integrated intelligent Power SKiiP 32 NAB 12 3-phase bridge rectifier + braking chopper + 3-phase bridge inverter Case M3 Bridge Rectifier VRRM Theatsink = 80 °C ID tp = 10 ms; sin. 180 °, Tj = 25 °C IFSM tp = 10 ms; sin. 180 °, Tj = 25 °C I2t Tj Tstg Visol AC, 1 min. Characteristics Symbol Conditions 1) IGBT - Inverter IC = 50 A Tj = 25 (125) °C VCEsat VCC = 600 V; VGE = ± 15 V td(on [ ... ]
32NAB125T12 PDF Datasheet Download
