3.13 Incoming Line Arrangements -
Main Circuit Breakers
Thermal magnetic molded case type breakers are used for
mains in the MCC.
Circuit Breaker Incoming. Fig. Ref. Wire Bending. Total Assembly Required Unit
Frame/Max Trip Location Cable Size. Next Pg. Space.Dim.A Height.Dim. B Space.Dim. C
125A/125A Top Qty = 1a
#3 - 1/0 CU/AL 23 14 24 12
125A/125A Bottom Qty = 1a
#3 - 1/0 CU/AL 26 8 24 18
250A/250A Top Qty = 1
#6 - 350MCM CU 24 15 30 18
250A/250A Bottom Qty = 1
#6 - 350MCM CU 27 15 36 30
400A/400Ad Top Qty = 2
3/0 - 500MCM CU 24 15 30 18
400A/400Ad Bottom Qty = 2
3/0 - 500MCM CU 28 15 42 36
600A/600Ad Top Qty = 2
3/0 - 500MCM CU 24 15 30 18
600A/600Ad Bottom Qty = 2
3/0 - 500MCM CU 28 15 42 36
800A/800A* Top Qty = 3
250 - 500MCM CU/AL 25 15 48 36
800A/800A**s Bottom Qty = 3
250 - 500MCM CU/AL 29 22 54 48
1200A/1200A* Top Qty = 4
250 - 500MCM CU/AL 25 16 48 36
1200A/1200A**s Bottom Qty = 4
250 - 500MCM CU/AL 29 22 54 48
1600A/1600A** Top Qty = 4
300 - 600MCM CU/AL 30 42 90 72
1600A/1600A** Bottom Qty = 4
300 - 600MCM CU/AL 31 26 90 72
2000A/2000A** Top Qty = 6
300 - 600MCM CU/AL 30 32 90 72
2000A/2000A** Bottom Qty = 6
300 - 600MCM CU/AL 31 26 90 72
* Space in rear of structure not available.
** Entire rear of structure not available.
. Optional lugs available. Contact factory for size and rating.
1 15-25A Lug size 12-10AL, 14-10CU, 30-100A. 10-1/0 CU-AL
2 800A - 1200A not available in back-to-back bottom mounting.
3 Stab opening at bottom of unit not available in rear.
Siemens Energy & Automation, Inc.
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