Installation Guide

| Load Center Selection & Application Guide
20
Murray Load Centers
a
Main Lug & Main Breaker Load Centers 1-phase, 3-wire SN, 120/240V AC
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Main Lugs with Aluminum Bus
12-60 Circuit, 125-225 Amperes 100,000A IR
Amps
Max.
No. of
Spaces
Max
Circuit
Indoor Type 1
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Dimensions
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Outdoor Type 3R
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Dimensions
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Catalog Number Height Width Depth Catalog Number Height Width Depth
125 12 24 LC1224L1125 21 14⅜ 4 LW1224L1125 20 14¼ 4½
125 16 32 LC1632L1125 21 14⅜ 4 LW1632L1125 29 14¼ 4½
125 20 40 LC2040L1125 24 14⅜ 4 LW2040L1125 29 14¼ 4½
125 30 40 LC3040L1125 30 14⅜ 4 — — — —
150 16 32 LC1632L1150 24 14⅜ 4 — — — —
150 24 40 LC2440L1150 30 14⅜ 4 — — — —
200 12 24 — — — — LW1224L1200 29 14¼ 4½
200 20 40 LC2040L1200 30 14⅜ 4 LW2040L1200 29 14¼ 4½
200 24 40 LC2440L1200 30 14⅜ 4 — — — —
200 30 40 LC3040L1200 36 14⅜ 4 LW3040L1200 38 14¼ 4½
200 40 40 LC4040L1200 39 14⅜ 4 — — — —
225 40 60 LC4060L1225 39 14⅜ 4 — — — —
Copper Bus
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Amps
Max.
No. of
Spaces
Max
Circuit
Indoor Type 1

Dimensions

Outdoor Type 3R

Dimensions

Catalog Number Height Width Depth Catalog Number Height Width Depth
125 20 40 LC2040L1125CU 24 14⅜ 4 — — — —
200 20 40 LC2040L1200CU 30 14⅜ 4 — — — —
200 30 40 LC3040L1200CU 36 14⅜ 4 — — — —
200 40 40 LC4040L1200CU 39 14⅜ 4 — — — —
225 12 24 — — — — LW1224L1225CU 29 14¼ 4½
225 42 42 LC4242L1225CU 42 14⅜ 4 LW4242L1225CU 42 14¼ 4½
Main Breaker with Aluminum Bus
12-60 Circuit, 100-200 Amperes 22,000A IR
Amps
Max.
No. of
Spaces
Max
Circuit
Indoor Type 1

Dimensions

Outdoor Type 3R
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Dimensions

Catalog Number Height Width Depth Catalog Number Height Width Depth
100 12 24 LC1224B1100 18 14⅜ 4 LW1224B1100 23 14¼ 4½
100 16 32 — — — — LW1632B1100 23 14¼ 4½
100 20 40 LC2040B1100 24 14⅜ 4 — — — —
100 24 40 LC2440B1100 24 14⅜ 4 — — — —
100 30 40 LC3040B1100 30 14⅜ 4 — — — —
150 16 32 LC1632B1150 24 14⅜ 4 — — — —
150 20 40 LC2040B1150 30 14⅜ 4 LW2040B1150 29 14¼ 4½
150 24 40 LC2440B1150 30 14⅜ 4 — — — —
150 30 40 LC3040B1150 36 14⅜ 4 — — — —
200 12 24 — — — — LW1224B1200 29 14¼ 4½
200 16 32 LC1632B1200 30 14⅜ 4 — — — —
200 20 40 LC2040B1200 30 14⅜ 4 LW2040B1200 29 14¼ 4½
200 24 40 LC2440B1200 30 14⅜ 4 — — — —
200 30 40 LC3040B1200 36 14⅜ 4 LW3040B1200 38 14¼ 4½
200 40 40 LC4040B1200 39 14⅜ 4 LW4040B1200 38 14¼ 4½
200 30 54 LC3054B1200 36 14⅜ 4 — — — —
200 42 60 LC4260B1200 39 14⅜ 4 — — — —
Copper Bus

Amps
Max.
No. of
Spaces
Max
Circuit
Indoor Type 1

Dimensions

Catalog Number Height Width Depth
100 20 40 LC2040B1100CU 24 14⅜ 4
200 20 40 LC2040B1200CU 30 14⅜ 4
200 30 40 LC3040B1200CU 36 14⅜ 4
200 40 40 LC4040B1200CU 39 14⅜ 4
a
Convertible to main breaker by using the following main breaker kits:
100A load centers: MBK100M only
125A load centers: MBK100M and MBK125M only
150A load centers: MBK150M only
200A load centers: MBK150M and MBK200M only
225A load centers: MBK150M, MBK200M, and MBK225M only
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100-225A only
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Standard package quantity equal to 1
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Dimensions shown are representative of outside box box
length, width & depth (+- 1/8”) and do not include
allowance for mounting bumps, endwalls, hubs, or
hardware protrusions. Allow approximately 1 1/4”
additional in length and width dimensions for surface or
combination overhang. Consult factory for specific
details if required.
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Hub provision only. closure plate included. Panels
through 225A require HS type hub; panels over 225A
require HV type hub. See accessories on page 21 for
hub types.
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Copper bus load centers are recommended for those
applications where the environment may be severe (such
as farm and coastal areas).