Electrical Device w/ Static Switch Control Board 41-09-613321 #10-04-253699

Description

I don't know what this is!  If YOU do, please contact me.  Purchased at Utility Company surplus property auction.
Appears to be Brand New, never used.
Some kind of Electrical Device with two PCBs - one large, and one small.  Five large aluminum heat sinks.  Large copper terminals.  Heavy!  (36#).  Partial number on hand-written tag says ...384-1.
Large PCB has # 41-09-613321 revD RBBS 0802-816.  Small has #41-09-613561 revB RBBS 0802-048.
Google search shows the large PCB is a "Static Switch Control Board", and BOARD,STATIC SWITCH CONTROL,41-09-613321, and other numbers (not on unit):  Rasgas Mat.No.1106897
STATIC SWITCH CONTROL BOARD FOR UPS
MANUFACTURER: THOMAS & BETTS
MFR.PART NO: 41-09-613321
MFR.MODEL NO: CWU010-4133-241-1-5-23
Other numbers are:  HS111-5, Q151-4, Heat Sinks have # 10-04-253699 and 10-04-286549
Edit:  I have been advised that this is possibly part of a control system for a high power UPS unit.
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