r>ence of flammable gases or vapors,
combustible dust or easily ignitable
fibers and flyings, and areas subject
to corrosion, weather and dampness Petroleum refineries, chemical and
petrochemical plants with indoor and
outdoor processes Applications requiring overcurrent
and short circuit protection of light-
ing, appliances, heating and motor
circuits
Features NEMA 4, 4x rated for protection from
hose directed water and corrosion Standard electrical components:
B7L-Cutler-Hammer Quicklag
Breakers B7P-Cutler-Hammer Series
C Breakers B7L and B7P furnished with copper
buss Main lugs. Mechanical solderless
type, approved for CU or AL
conductors Solid Neutral standard. Single phase
3 wire. Three phase 4 wire Copper ground bar standard Main and branch breaker handles
can be padlocked in ON or OFF
position Top feed panel standard with bottom
feed optional Hinged cover, installed as standard Quick release, captivated coverbolts
of 316 stainless steel
Class I, Div. 1 & 2, Groups B,C,D
Class l, Zones 1 & 2, Groups llB+H
2
, IIA
Class II, Div. 1 & 2, Groups E,F,G
Class III, Div. 1 & 2
NEMA 3, 4, 4x, 7(B,C,D) 9(E,F,G)
Classified File E83969
See files for details or call Killark.
®
Standard Materials Enclosure: Copper-free aluminum
(less than 4/10 of 1%) Main Breaker Handle: Copper-free
aluminum Cover bolts: 316 grade stainless steel Flange Gasket O Ring: Buna-N
Nitrile Branch Breaker Operators: Valox
Thermoplastic Polyester handle
molded onto 316 stainless steel shaft
with neoprene O ring Hinges: Copper-free aluminum with
stainless steel pin and hardware Mounting Lugs: 1/4" thick aluminum
Panel Selection Factors
Basic information required when speci-
fying panelboards is as follows: Environment Service (Voltage/Frequency/Phase) Interrupting capacity AMP Rating of Main (Lugs only or
Breaker) Branch Breaker (Type/Number of
Poles/Amperage)
Ordering Information
Specifying and ordering a complete
panelboard assembly requires the
selection of three components.
(1) Basic Panel (2) Branch Breaker and
(3) Options
(if required). This method of
cataloging permits a wide variety and
maximizes circuit flexibility in our pan-
elboard offering. Components supplied
in each of these selections include:
1) Basic Panelboard Enclosures
(page DE12) Explosion-proof enclosure consisting
of box and cover

Cover predrilled and plugged for
maximum number of branch breaker
handles (handles not supplied)

Box supplied with conduit openings Main circuit breaker and external
handle (when specified) Panelboard internal chassis with buss
bars but less branch circuit breakers
2) Branch Circuit Breakers (page DE14) Internal circuit breaker External handle mechanism with
internal tripping mechanism Test pushbutton for GFI (when
ordered) Lockout shield with on-off-trip-reset
identification
3) Options - Accessories (page DE14)
Ordering Example
Specification is for a 3 phase 120/208
volt panel with 100 Amp main lugs
complete with (4) single pole 20 Amp
(2) double pole 20 Amp and (1) three
pole 30 Amp branch breakers.
Branch Breaker Total =
(4) 1 Pole = 4 Poles Total
(2) 2 Pole = 4 Poles Total
(1) 3 Pole = 3 Poles Total
Total 11 Branch Poles
Specification/Ordering Example
B7L20 - 312 - ML100 (Basic panel-
board enclosure) with:
(4) B7BLA1020 (1 Pole 20 Amp Branch)
(2) B7BLA2020 (2 Pole 20 Amp Branch)
(1) B7BLB3030 (3 Pole 30 Amp Branch)
Catalog Logic
See page DE15 for panelboard catalog
number logic for basic enclosures.
®
c
Certified-File LR 11713 for B7L B 7 L S E R I E S D I S T R I B U T I O N E Q U I P M E N T
L I G H T I N G PA N E L B O A R D S
DE12
Classified File E83969
See files for details or call Killark.
®
TYPE
NO. OF
VOLT
AMPERES
POLES
SYMMETRICAL
BAB*
1
120
10,000 AIC
BAB*
2
120/240
10,000 AIC
BAB*
3
240
10,000 AIC
BABSWN*
1
120/240
10,000 AIC
BABSWN*
2
120/240
10,000 AIC
QGBF
1
120
10,000 AIC
QGBF
2
120/240
10,000 AIC
QGBFEP
1
120
10,000 AIC
QGBFEP
2
120/240
10,000 AIC
C I R C U I T B R E A K E R R A T I N G S
Class I, Div. 1 & 2, Groups B,C,D
Class l, Zones 1 & 2, Groups llB+H
2
, IIA
Class II, Div. 1 & 2, Groups E,F,G
Class III, Div. 1 & 2
NEMA 3, 4, 4x, 7(B,C,D) 9(E,F,G)
*Type BAB also rated for 80V DC at 5,000 AIC.
NOTE: Main breaker panel includes main breaker and its price in basic enclosure part number. Refer to page DE14 for branch breaker ordering information.
ELECTRICAL
RATING
Single phase
3 wire
with solid neutral
120/240 VAC
Three phase
4 wire
with solid neutral
120/208 VAC
12
18
18
24
24
30
30
36
42
12
18
18
24
24
30
30
36
42
B 7 L P A N E L W I T H O U T M A I N B R E A K E R ( M A I N L U G S O N LY ) L E S S B R A N C H B R E A K E R S
100
100
225
100
225
100
225
225
225
100
100
225
100
225
100
225
225
225
MAIN LUG
RATING
NUMBER OF
BRANCH POLES
CATALOG NUMBER
BASIC ENCLOSURE AND CHASSIS
ENCLOSURE
BOX SIZE
MAIN WIRE
RANGE
B7L20 - 112 - ML100
B7L29 - 118 - ML100
B7L29 - 118 - ML225
B7L29 - 124 - ML100
B7L41 - 124 - ML225
B7L41 - 130 - ML100
B7L41 - 130 - ML225
B7L41 - 136 - ML225
B7L41 - 142 - ML225
B7L20 - 312 - ML100
B7L29 - 318 - ML100
B7L29 - 318 - ML225
B7L29 - 324 - ML100
B7L41 - 324 - ML225
B7L41 - 330 - ML100
B7L41 - 330 - ML225
B7L41 - 336 - ML225
B7L41 - 342 - ML225
A
B
B
B
C
C
C
C
C
A
B
B
B
C
C
C
C
C
E
G
F
G
F
G
F
F
F
E
G
F
G
F
G
F
F
F
B 7 L P A N E L W I T H B A C K F E E D M A I N B R E A K E R L E S S B R A N C H B R E A K E R S
Three phase
4 wire
with solid neutral
120/208 VAC
ELECTRICAL
RATING
MAIN BREAKER
FRAME
MAIN BREAKER
AND RATING
NUMBER OF
BRANCH POLES
CATALOG NUMBER
BASIC ENCLOSURE AND CHASSIS
ENCLOSURE
BOX SIZE
MAIN WIRE
RANGE
J
J
J
J
J
J
J
J
B
B
C
C
B
B
C
C
B7L29 - 112 - MBB100
B7L29 - 118 - MBB100
B7L41 - 124 - MBB100
B7L41 - 130 - MBB100
B7L29 - 312 - MBB100
B7L29 - 318 - MBB100
B7L41 - 324 - MBB100
B7L41 - 330 - MBB100
12
18
24
30
12
18
24
30
100
100
100
100
100
100
100
100
BAB
BAB
BAB
BAB
BAB
BAB
BAB
BAB
B 7 L P A N E L W I T H M A I N B R E A K E R L E S S B R A N C H B R E A K E R S
CATALOG NUMBER
BASIC ENCLOSURE AND CHASSIS
B7L29 - 112 - MBE100
B7L41 - 118 - MBE100
B7L41 - 124 - MBE100
B7L41 - 124 - MBC225
B7L41 - 130 - MBE100
B7L41 - 130 - MBC225
B7L50 - 136 - MBC225
B7L50 - 142 - MBC225
B7L29 - 312 - MBE100
B7L41 - 318 - MBE100
B7L41 - 324 - MBE100
B7L41 - 324 - MBC225
B7L41 - 330 - MBE100
B7L41 - 330 - MBC225
B7L50 - 336 - MBC225
B7L50 - 342 - MBC225
ENCLOSURE
BOX SIZE
MAIN WIRE
RANGE
NUMBER OF
BRANCH POLES
MAIN BREAKER
AND RATING
MAIN BREAKER
FRAME
ELECTRICAL
RATING
Single phase
3 wire
with solid neutral
120/240 VAC
Three phase
4 wire
with solid neutral
120/208 VAC
EHD
EHD
EHD
ED
EHD
ED
ED
ED
EHD
EHD
EHD
ED
EHD
ED
ED
ED
12
18
24
24
30
30
36
42
12
18
24
24
30
30
36
42
B
C
C
C
C
C
D
D
B
C
C
C
C
C
D
D
H
H
H
I
H
I
I
I
H
H
H
I
H
I
I
I
100
100
100
225
100
225
225
225
100
100
100
225
100
225
225
225
Cutler-Hammer type BA circuit
breaker 1 - 2 or 3 pole.
Catalog numbers on this page are for
the basic panelboard enclosure only
with a panel interior chassis containing
main lugs or main breaker as illustrated.
Internal branch breakers and external
handles are NOT included in the basic
enclosure catalog number and must be
ordered as separate items.
Branch circuit loads
The interior panel chassis supplied in
B7L panel is limited to a maximum of
140 amperes at any one connection
point. Breakers of 50 thru 100 amps
must be installed opposite breakers of
smaller amperage so as not to exceed
the 140 ampere limitation.
®
c
Single phase
3 wire
with solid neutral
120/240 VAC
Certified-File LR 11713 B 7 P S E R I E S D I S T R I B U T I O N E Q U I P M E N T
P O W E R PA N E L B O A R D S
DE13
F E AT U R E S - S P E C I F I C AT I O N S
DE
Cutler-Hammer Series C Circuit
Breakers 1-2 or 3 pole.
Catalog numbers on this page are for
the basic panelboard enclosure only
with a panel interior chassis containing
main lugs or main breaker as illustrated.
Internal branch breakers and external
handles are NOT included in the basic
enclosure catalog number and must be
ordered as separate items.
Class I, Div. 1 & 2, Groups B,C,D
Class l, Zones 1 & 2, Groups llB+H
2
, IIA
Class II, Div. 1 & 2, Groups E,F,G
Class III, Div. 1 & 2
NEMA 3, 4, 4x, 7(B,C,D) 9(E,F,G)
Classified File E83969
See files for details or call Killark.
®
B 7 P C I R C U I T B R E A K E R R A T I N G S
1
2&3
2&3
EHD
EHD
FDB
AC
277
480
600
DC
125
250
250
240AC 18000
18000
277AC
14000
480AC 14000
14000
600AC
14000
125DC
10000
250DC 10000
10000
AMPERES SYMMETRICAL
MAXIMUM VOLTS
TYPE
NUMBER OF POLES
B 7 P P A N E L W I T H M A I N B R E A K E R L E S S B R A N C H B R E A K E R S
MAIN BREAKER
MAX. VOLTS AMPS FRAME
480
600
600
480
600
600
480
600
100
100
225
100
100
225
100
100
EHD
FDB
JDB
EHD
FDB
JDB
EHD
FDB
ELECTRICAL
RATING
NUMBER OF
BRANCH