Breakers Dimension

Dimension Sheet29-170C

October 1997Mailed to: E, D, C/29-100A, 31-400A,

31-500A

Breaker Description Page

Type FCL Current Limiting Breaker .......................................................................................... 1Type LCL Current Limiting Breakers ........................................................................................ 3Type FB Tri-Pac Breaker ............................................................................................................. 5Type LA Tri-Pac Circuit Breaker ................................................................................................7Type NB Tri-Pac Circuit Breaker ................................................................................................9Type PB Tri-Pac Breaker .......................................................................................................... 11

WestinghouseAB DE-IONCurrent LimitingCircuit Breakers


Page 1

Reproduced from drawing 2614D90 Dimensions in parentheses in millimeters

2.719(69.03)

4.000(101.56)

.813(20.63)

.406(10.31)

7.813(198.36)

6.750(171.38)

.063(1.59)

.859(21.82)

.063(1.59)

4.125 (104.73) 3.500(88.87)

.750(19.04)

3.969(100.77)

.750(19.04)

3.188 (80.93)

3.375 (85.69)

2.219(56.33)

5.375 (136.47)7.500 (190.43)

2.125(53.95)

.688(17.46)

1.000 (25.39) .125(3.17)

.500(12.70)1.000

(25.39)

8.750(222.16)

7.813(198.36)

4.375 (111.08)

2.016(51.18)

2.250(57.13)

1.984(50.38)

1.359(34.51)

2.766(70.22)

2.297(58.32)

2.359(59.90)

2.266(57.52)

4.094 (103.94)

.375(9.52)

2.063(52.37)

3.500(88.87)

2.219(56.33)

.500(12.70)

.125(3.17)

.688(17.46)

2.047 (51.97)

7.250(184.08)

1.375(34.91)

2.297(58.32)

.063(1.59) .813

(20.63)

.563(14.28)

.813(20.63)

.703(17.85)

.250 R(6.35) R

.250(6.35)

2.750 (69.82)

.063 R(1.59) R

1.375(34.91)

.500(12.70)1.000

(25.39)

.203 (5.16) Diameter (4) Holes

.344 (8.73) Diameter Counterbore

.250 (6.35) Deep

CL Breaker Handle"On" Position

.047 R(1.49) R

1.500 (38.09)(Line End)

1.438 (36.50)(Load End)

CL Breaker Handle"Reset" Position

2.125 (53.95)

.125(3.17)

.125 (3.17) Diameter

.313 (7.93) Deep

.156 (3.97) Diameter Counterbore

.031 (.79) Deep (3) Holes

.047 R(1.19) R

.375 (9.52) 5 Taper(Each Side)

CL BreakerHandle"Tripped"Position

CL BreakerHandle"Off" Position

.125 (3.17) x .875 (22.22) Copper BarsBars May be Rotated 90

Support Blocks for Line and Load Endsare Not Supplied With Breaker and Mustbe Ordered Separately.

.125 R(3.17) R

Line End

Load End

Front View

Type FCL Current Limiting Breaker

Side View


Cutler-HammerWestinghouse &Cutler-Hammer ProductsFive Parkway CenterPittsburgh, Pennsylvania, U.S.A. 15220

Type FCL Current Limit-RCurrent Limiting Breakers15-100 Amperes


31-500A


Page 2

October 1997

1.375(34.91)

1.375(34.91)

.688(17.46)

7.250(184.08)

.313(7.93)

.313 (7.93) - 18 Thread

.938(23.80) Line End

.297(7.54) Load End(Available Contact Surface)

2.016(51.18)

7.813(198.36)

1.375(34.91)

.063(1.59)

.500(12.70)

1.453(36.89)

.688(17.46)

.594(15.08)

.813(20.63)

2.750(69.82)

1.188(30.15)

2.297(58.32)

1.375(34.91)

2.297(58.32)

7.813(198.36)

2.750(69.82)

1.375(34.91)

.813(20.63)

.500(12.70)

.250(6.35)

.250(6.35)

1.375(34.91)

1.453(36.89)

.750(19.04)

BreakerMountingSurface

MountingPanel

For Bolt-on Only

C

E

D

B

A

C L B

reak

er

C L B

reak

er

C L B

reak

er

C L B

reak

er

CL Handle"On" Position



.219 R(5.55) R

.438 (11.11)Diameter(6) Holes

.656 R(16.66) R

.438 (11.11)Diameter(4) Holes

.164 (4.20) - 32 Tap (4) Holes

.656 R(16.66) R

Removable Connector UL ListedWire Range 14 to 1/0 CU 12 to1/0 ALWill Accommodate 14 to 3/0 Wire

ConnectorStrap


Printed in U.S.A.

Westinghouse AB DE-ION Current Limiting Circuit BreakersType FCL Current Limiting Breaker, Drilling Plans

Dimensions in parentheses in millimetersReproduced from drawing 2614D90

For Plug-In Blocks Front Cover CutoutFor Rear Connected StudsFor Mounting Bolts

Terminal Arrangements

Wire Connection Bus Connection Stud Connection Plug-In or Bolt-OnConnection

Rear Connected StudsFor 15- to 100-Amp BreakersStud Ampere Stud Panel Tube TubeRating Style Thickness Length Style D E

Number A B C Number

100 A Short 451D874G01 1.000 (25.39) 1.063 (29.98) 32B9446H20 3.625 (92.04)100 A Short 451D874G01 .688 (17.46) - .938 (23.80) 1.375 (34.91) 32B9446H21 3.625 (92.04)100 A Short 451D874G01 .375 (9.52) - .625 (15.87) 1.688 (42.85) 32B9446H22 3.625 (92.04)100 A Short 451D874G01 .250 (6.35) - .313 (7.93) 2.000 (76.17) 32B9446H23 3.625 (92.04)

100 A Long 451D874G02 1.000 (25.39) 3.438 (87.28) 32B9446H24 6.125 (155.91)100 A Long 451D874G02 .688 (17.46) - .938 (23.80) 3.750 (95.21) 32B9446H25 6.125 (155.91)100 A Long 451D874G02 .375 (9.52) - .625 (15.87) 4.063 (103.15) 32B9446H26 6.125 (155.91)100 A Long 451D874G02 .250 (6.35) - .313 (7.93) 4.375 (111.08) 32B9446H27 6.125 (155.91)

Ordering instructions. Stud complete consists of one stud assembly and one tube as per chart. Order longand short studs and tubes as required to obtain proper bus spacing.


Page 3


Type LCL Current Limiting Breakers

.313(7.93) Dia.(4) Mounting Holes.531(13.49) Dia.Counterbore.063

(1.59)

CL Handle

C L B

reak

er

Term. Block Assy.Used Only onGround FaultBreakers

Current CarryingParts OmittedFrom Center Polefor 2-Pole Breaker

.438(11.11) - 14 Tap(In Inserts)

1112Off

Handle .438(11.11)Thick1 Taper(Both Sides)

3.875 R(98.39) R

1912On

15Reset

1

AutoTripped

45

45

.313(7.93)

2.750(69.82)

1.375(34.91)

.031(.79)

1.125(28.56)

1.875(47.61)

3.750(95.21)

9.531(242.00)

14.688(372.92)

3.063(77.76)

.031(.79)

1.125(28.56)

5.156(130.92)

8.250(209.47)

11.313(287.22)

10.188(258.66)

16.000(406.24)

18.250(463.37)

6.938(176.14)

5.813(147.58)

4.719(119.81)

.703(17.85)

B

.313(7.93)

4.125(104.73)

3.063(77.76)

1.844(46.81)

1.531(38.88)

.922(23.41)

.719(18.25)

2.531(64.27)

2.813(71.41)

1.375(34.91)

1.250(31.74)LineEnd

LoadEnd

LineEnd

LoadEnd

2.750(69.82)

5.500(139.65) 4.000

(101.56)8.000

(203.12)

2.125(53.95)

1.188(30.15)

6.063(153.93)

4.063(103.15)

4.875(123.78)

5.250(133.30)

3.094(78.55)

1.250(57.13)

.531(13.49)

1.875(47.61)

3.375(85.69)

.219(5.55)

1.188(30.15)

1.188(30.15)

1.750(44.43)

9.563(242.79)

14.750(374.50)

5.188(131.71)

2.188(55.54)

.594(15.08)

.219(5.55)

1.750(44.43)

1.188(30.15)

.531(13.49)

1.375(34.91)

3.813(96.80)4.000

(101.56)

Front View Side View

Line End

Load End


Type LCL Current Limit-RCurrent Limiting Breakers125-400 Amperes



31-500A


Page 4

October 1997


Printed in U.S.A.

Westinghouse AB DE-ION Current Limiting Circuit BreakersType LCL Current Limiting Breakers, Drilling Plans

Reproduced from drawing 1371D33Dimensions in parentheses in millimeters

Plug-In Adapter KitPoles Ampere Kit Style Thread

Rating Number Size

2 125-400 313C644G25 .750 (19.04) - 16 (406.24)3 125-400 313C644G26 .750 (19.04) - 16 (406.24)

Rear Connected StudsStud Ampere Stud Style Thread DimensionRating Number Size A

125-225 1241345 .500 (12.70) - 13 (330.07) 3.188 (80.93)125-225 1241392 .500 (12.70) - 13 (330.07) 4.938 (125.36)125-225 1241346 .500 (12.70) - 13 (330.07) 6.250 (158.69)250-400 05B7383G15 .750 (19.04) - 16 (406.24) 5.469 (138.85)250-400 05B7383G16 .750 (19.04) - 16 (406.24) 7.969 (202.33)250-400 05B7383G17 .750 (19.04) - 16 (406.24) 10.469 (265.80)

Terminal ArrangementsCable Catalog Ampere Wire

Number Rating Size

For Use With Cu/Al Cable (Supplied as Standard)

Single TA225LA1 125-225 #6-350 MCM Cu or#4-350 MCM Al

Double TA400LA1 250-400 #4-250 MCM Cu/Al Plus3/0-600 MCM Cu/Al

For Use With Copper Cable Only (Must be Specified)

Single TA225LA 125-500 #6-350 MCMDouble TA400LA 250-400 #4-250 MCM and

3/0-600 MCM

For Plug-In Blocks For Rear Connected Studs(For Non-Conductive Panels)

For Mounting Bolts Front Cover Cutout.500(12.70) Dia(6) Holes for .375(9.52)Mounting Bolts1.375(34.91)

CL Handle

.563(14.28) Dia. Holefor 125 to 255 Amps

.813(20.63) Dia. Holefor 250 to 400 Amps

6 Holes for3-Pole Breaker

4 Holes for2-Pole Breaker

Omit 2 Center Holesfor 2-Pole Breaker

.250(6.35) Tap or

.313(7.93) Dia.(4) Holes

.188 R(4.76) R

.250 R(6.35) R

.250 R(6.35) R

Do Not Use More Than 25 Ft.Lbs. Torque to Tighten Nuts

A

Do Not Use More Than 25 Ft.Lbs. Torque to Tighten Nuts

CL Stud

CL Stud

C L B

reak

er

CL Handle

C L B

reak

er

C L B

reak

er

CL Handle

C L B

reak

er

2.750(69.82)1.125

(28.56)

1.750(44.43) 9.563

(242.79)

14.750(374.50)

17.000(431.63)

5.188(131.71)

1.125(28.56)

1.094 R(27.77) R

5.500(139.65)

2.750(69.82)

.500(12.70)

1.000(25.39)

9.563(242.79)

14.750(374.50)

5.188(131.71)

5.500(139.65)

2.750(69.82)

14.688(372.92)

9.531(242.00)

5.156(130.92)

1.375(34.91)

2.750(69.82)

3.250(82.52)

1.625(41.26)

1.969(49.99)

2.078(52.76)

6.016(152.74)

3.500(88.87)

7.000(177.73)

.031(.79)


Page 5

.203(5.16) Dia.

.344(8.73) + .005 Dia. Counterbore

.250(6.35) Deep(2 Holes)

2.750(69.82)

.063 R(1.59) R

.125 R(3.17) R .125(3.17) x .875(22.22) Copper

Bars for 15 to 100 Amp.250(6.35) x .625 (15.87) CopperBars for 125 and 150 Amp BarsMay be Rotated 90

.047 R(1.19) R

1730'

1.375(34.91)

1.375(34.91)

.688(17.46)

1.000(25.39)

.500(12.70)

.125(3.17) Dia.

.313(7.93) Deep

.156(3.97) Dia. Counterbore

.031(.79) Deep(3 Holes)

1.969(49.99)

2.594(65.86)

2.625(66.65)

7.250(184.08)

.750(19.04)

1.828(46.42)

1.656(42.05)

2.906(73.79)

2.969(75.38)

4.766(121.00)

7.813(198.36)

3.375(85.69)

8.750(222.16)

1.281(32.53)

2.563(65.06)

.063 R(1.59) R

2.531(64.27)

.063(1.59)

.203(5.16) Dia.

.375(9.52) Dia. Counterbore

.750(19.04) Deep(2 Holes)

2.047(51.97)

4.094(103.94)4.125

(104.73)2.063

(52.37)3.875

(98.39)1.938

(49.19)

.375(9.52)

.031(.79)

2.219(52.97)

3.500(88.87)

7.500(190.43)

3.375(85.69)

5.375(136.47)

2.125(53.95)

3.188(80.93)

4.375(111.08)

2.219(56.33)

2.250(57.13)

2.125(53.95)

.078(1.98)

.500(12.70)

.500(12.70)

1.000(25.39)

1.000(25.39)

.750(19.04)

.688(17.46)

.125(3.17)

.813(20.63)

2.906(73.79)

1.406(35.70)

830'330'

6

430'

Handle .375(9.52) Thick7 Taper(Each Side)

Toggle OffTripped

On

ResetOff

2.563 R(65.06) R

.063(1.59) .563

(14.28)

.813(20.63).125

(3.17)

.750(19.04)

.063(1.59)3.500

(88.87)3.969

(90.77)

7.813(198.36)

OFF


Type FB Tri-Pac Breaker


Line End

Reproduced from drawing 4979D67Dimensions in parentheses in millimeters

Load End


Type FB Tri-Pac BreakerOctober 1997Mailed to: E, D, C/29-100A, 31-400A,

31-500A


Page 6

October 1997

.164 - 32 Tap(4) Holes

2.625(66.65)

CL Handle

.438(11.11) Dia.(6) Holes for15 to 100 Amps

.438(11.11) Dia.(4 Holes)

.656 R(16.66) R

.219 R(5.55) R

.125 R(3.17) R

7.250(184.08)

.688(17.46)

1.375(34.91)

C L B

reak

er

CL HandleC L

Bre

aker

1.375(34.91)

2.750(69.82)

2.906(73.79)

7.813(198.36) CL Handle

C L B

reak

er2.906(73.79)

7.813(198.36)

.813(20.63)

.813(20.63)

1.375(34.91)

2.750(69.82)

.250(6.35) .500

(12.70)

.656 R(16.66) R

.250(6.35)

.500(12.70)

1.375(34.91) .688(17.46)

2.063(52.37)

2.719(69.03)

1.188(30.15)

.594(15.08)

4.000(101.56)

2.000(50.78)

1.734(44.04)

Removable Connector ULListed Wire Range 14 to 1/0CU 12 to 1/0 AL WillAccommodate 14 to 3/0 Wire

ConnectorStrap

.313(7.93)

.938(23.80) Line End

.594(15.08) Load End(Available Contact Surface) For Bolt-onOnly

BreakerMountingSurface

D

MountingPanel

.750(19.04)

.063(1.59)C

B

E

A

F Thread



Type FB Tri-Pac Circuit Breaker, Drilling Plans

Westinghouse AB DE-ION Current Limiting Circuit Breakers

Front Cover CutoutFor Plug-In BlocksFor Mounting Bolts For Rear Connected Studs

Terminal Arrangements

Wire Connection Bus Connection Stud Connection Plug-In or Bolt-OnConnection

For 15- to 100-Amp BreakersStud Ampere Stud Panel Tube TubeRating Style Thickness Length Style D E FNumber A B C Number

100 A Short 451D874G01 1.000 (25.39) 1.063 (29.98) 32B9446H20100 A Short 451D874G01 .688 (17.46) - .938 (23.80) 1.375 (34.91) 32B9446H21100 A Short 451D874G01 .375 (9.52) - .625 (15.87) 1.688 (42.85) 32B9446H22 6.125 (155.51) 3.625 (92.04) .313 (7.93)100 A Short 451D874G01 .250 (6.35) - .313 (7.93) 2.000 (76.17) 32B9446H23 18.00 (457.02)

100 A Long 451D874G02 1.000 (25.39) 3.438 (87.28) 32B9446H24100 A Long 451D874G02 .688 (17.46) - .938 (23.80) 3.750 (95.21) 32B9446H25100 A Long 451D874G02 .375 (9.52) - .625 (15.87) 4.063 (103.15) 32B9446H26100 A Long 451D874G02 .250 (6.35) - .313 (7.93) 4.375 (111.08) 32B9446H27

Ordering instructions. Stud complete consists of one stud assembly and one tube as per chart. Order long and short studs and tubes asrequired to obtain proper bus spacing.

Rear Connected Studs

Printed in U.S.A.


Page 7

.313(7.93) Dia. Mtg. Holes

.219(5.55) Dia. C'bore(4) Holes

4.125(104.73)

CL Handle

.125(3.17) Diameter

.313(7.93) Deep Accepts#6 Thread Cutting Screws(2) Holes

MagneticTripAdjustment

.250 R(6.35) R

Current Carrying PartsOmitted from CenterPole for 2-Pole Breaker

CL Handle

Handle .438(11.11)Thick 1 Taper BothSides 1.563(39.67)Wide

5.500(139.65)

2.063(52.37)

5.625(142.82)

5.156(130.92)

1.875(47.61)

1.219(30.94) .250(6.35)

1.531(38.88)

1.531(38.88)

3.031(76.96)

4.500(114.26)

3.906(99.18)

4.750(120.60)

9.563(242.79)

9.000(228.51)

14.250(361.81)

16.000(406.24)

9.688(245.97)

1.375(34.91)

2.750(69.82)

2.750(69.82)

5.500(139.65)

7.750(196.77)

8.125(206.29)

8.000(203.12)

3.875(98.39)

4.063(103.15)

4.125(104.73)

4.000(101.56)

1.563(39.67)

4.063(103.15)

4.750(120.60)

8.000(203.12)

4.000(101.56)

5.250(133.30)

4.313(109.49)

1.875(47.61)

3.375(85.69)

3.813(96.80)

1.250(31.74)

.531(13.49)

1.125(28.56)

1.750(44.43)

5.094(129.33)

1.188(30.15)

1.625(41.26)

9.688(245.97)

14.781(375.30)

.594(15.08)

1.125(28.56)

1.750(44.43)

.531(13.49)1.250

(31.74)2.531

(64.27)4.063

(103.15).688

(17.46)

.094 R(2.38) R

1112Off

15Reset

1912On

1AutomaticTripped

3.875 R(98.39) R



Type LA Tri-Pac Circuit Breaker


Line End

Load End


Type LA Tri-Pac Circuit BreakerOctober 1997Mailed to: E, D, C/29-100A, 31-400A,

31-500A


Page 8

October 1997

.313(7.93) Dia(4 Holes)

2.750(69.82)

CL Handle

C L B

reak

er

1.375(34.91)

4.750(120.60)

14.250(361.81)

9.500(241.21)

2.750(69.82)

5.500(139.65)

5.094(129.33)

9.688(245.97)

14.781(375.30)

.813(20.63) Diameter Holefor 50 to 400 Amps6 Holes for 3-Pole Breaker4 Holes for 2-Pole BreakerOmit 2 Center Holes for2-Pole Breaker

CL Handle

C L B

reak

er

CL Handle

C L B

reak

er

CL Studs

CL Studs

5.500(139.65)

2.750(69.82)

1.375(34.91)

1.750(44.43)

1.125(28.56)

5.094(129.33)

9.344(237.24)

1.125(28.56)

.500(12.70)

1.000(25.39)

.500(12.70) Diameter(6 Holes) for.375(9.52) DiameterMounting Bolts

1.188 R(30.15) R

14.781(375.30)

17.031(432.42)

2.750(69.82) 6.813

(172.97)

.250 R(6.35) R

.375 R(9.52) R

.125 R(3.17) R

3.406(86.48)

3.250(82.52)

1.625(41.26)

1.969(49.99)

4.375(111.08)

4.813(122.19)

4.063(103.15)

8.125(206.29)

2.734(69.43)

.031(.79) A

CL Handle

C L B

reak

er

Westinghouse AB DE-ION Current Limiting Circuit BreakersType LA Tri-Pac Circuit Breaker, Drilling Plans


Printed in U.S.A.


Front Cover CutoutFor Rear Connected Studs

Plug-In Adapter KitPoles Ampere Kit Style Thread

Rating Number Size

2 125-400 313C644G25 .750 (19.04) - 16 (406.24)3 125-400 313C644G26 .750 (19.04) - 16 (406.24)

Rear Connected StudsStud Ampere Stud Style Thread DimensionRating Number Size A

125-225 1241345 .500 (12.70) - 13 (330.07) 3.219 (81.72)125-225 1241392 .500 (12.70) - 13 (330.07) 6.281 (159.48)125-225 1241346 .500 (12.70) - 13 (330.07) 4.969 (126.16)250-400 05B7383G15 .750 (19.04) - 16 (406.24) 5.938 (176.14)250-400 05B7383G16 .750 (19.04) - 16 (406.24) 7.969 (202.33)250-400 05B7383G17 .750 (19.04) - 16 (406.24) 10.938 (277.70)

For Mounting Bolts For Plug-In Blocks

Terminal ArrangementsCable Catalog Ampere Wire

Number Rating Size

For Use With Cu/Al Cable (Must be Specified)

Single TA225LA1 125-225 #6-350 MCM Cu or#4-350 MCM Al

Double TA400LA1 250-400 #4-250 MCM Cu/Al Plus3/0-600 MCM Cu/Al

For Use With Copper Cable Only (Supplied as Standard)

Single TA225LA 70-225 #6-350 MCMDouble TA400LA 250-400 #4-250 MCM and

3/0-600 MCM


Page 9

ON

OFF

8.250(209.47)

0.500(12.70) -13 Tap

4.125(104.73)

2.750(69.82)

1.375(34.91)

8.125(206.29)

19.750(501.45)

3.750(95.21)

3.484(88.47)

1.875(47.61)

.313(7.93)

MagneticTripAdjustment

22.000(533.19)

5.625(142.82)

9.250(234.86)

20.750(526.84)

2.859(72.60)

.250(6.35)

8.625(218.99)

.344(8.73) DiaMounting Holes.688(17.46) DiaCounterbore(4) Holes

.563(14.28)

.594(15.08)

2.156(54.75)

2.156(54.75)

5.500(139.65)

2.750(69.82)

3.063(77.76)

1.531(38.88)

FrontConnectedTerminals(See Table)

Current Carrying PartsOmitted from Center Polefor 2-Pole Breaker

.531(13.49)

.969(24.60)

1.938(49.19)

1.125(28.56)

2.250(57.13)

.438(11.11)Thick 1 Taperon Each Side

1930'On

1130' Off

1 Auto Trip

15 ResetMaximum

3.844 R(97.59) R

3.344(84.90)

.156(3.97)

.531(13.49)

.563(14.28)

.063(1.59)

45

.734(18.65)

1.156(29.36)

3.094(78.55)

5.250(133.30)

5.500(139.65)6.000

(152.34)

7.188(182.49)

17.500(444.33)

7.000(177.73)

2.313(58.71)

1.156(29.36)

1.438(36.50)

.719(18.25)

3.094(78.55)

1.156(29.36)

.734(18.65)

.531(13.49)

.063(1.59)

CL Handle


Type NB Tri-Pac Circuit BreakerFront View Side View

Line End

Load End



31-500A

Type NB Tri-Pac Circuit Breaker



Page 10

October 1997

.375(9.52) Dia.for .312 - 18 Tap(4) Holes

2.750(69.82)

CL Handle

1.375(34.91)

8.625(142.82)

12.125(307.85)

20.750(526.84)

C L B

reak

er

CL Handle

C L B

reak

er

Omit Holes inCenter Pole for2-Pole Breaker

6 Holes for 3-Pole Breaker4 Holes for 2-Pole Breaker

5.500(139.65)

7.000(177.73)

10.500(266.60)

17.500(444.33)

2.750(69.82)

.125 R(3.17) R

1.125(28.56) -12 Threads Omit from Center Pole

for 2-Pole Breaker

1.000(25.39)MinimumInsolated

Panel

.031(.79)

A

3.250(82.52)

.125 R(3.17) R

.125 R(3.17) R

.375 R(9.52) R

1.625(66.65)

2.734(69.43)

1.969(49.99)

4.156(105.53)

9.969(253.11)

3.406(86.48)

6.813(172.97)

4.063(103.15)

8.125(206.29)

Center Pole Stud StyleNumber 373B375G03(Omit for 2-Pole Breaker)

.031(.79)

1.000(25.39)MinimumInsolated

Panel

5.500(139.65)

6.188(157.10)

10.500(266.60)

Outside Poles StudStyle Number373B375G04 1.250(31.74) -12 Threads

Breaker Mounting Hardware

1.094(27.77)

.734(18.65)

.531(13.49)

7.000(177.73)

17.500(444.33)

24.000(609.36)

25.500(647.45)

1.750(44.43)

.750(19.04)

.375(9.52)

.563(14.28)Diameter(4 Holes)

2.500(63.48)

1.750(44.43).750(19.04)

1.750(44.43)

Breaker Mounting Hardware

6.375(161.86)

.438(11.11) Dia.Mounting Holes(4 Total)

3.375(85.69)

1.000(25.39)

.531(13.49)

.219(5.55)

.500(12.70)

2.750(69.82)

5.500(139.65)

6.750(171.38)

8.250(209.47)

CL Handle

C L B

reak

er

Westinghouse AB DE-ION Current Limiting Circuit BreakersType NB Tri-Pac Circuit Breaker, Drilling Plans


Printed in U.S.A.

Dimensions in parentheses in millimetersReproduced from drawing 372D515 Reproduced from drawing 4990D38

Front Cover CutoutBolted Rear Connected StudsFor 300-450 Amps

Front Connected TerminalsCatalog Ampere WireNumber Rating Size

For Use With Cu/Al Cable (Supplied as Standard)

TA700 NB 1 300-700 Two #1-500 MCMTA1000 NB 1 800 Three #3/0-400 MCM

For Use With Copper Cable Only (Optional)

T350 NB 300-350 Single Cable 1-600 MCMT700 NB 1 400-700 Double Cable 2/0-500 MCMT1000 NB 1 800 Triple Cable 3/0-500 MCM

For Mounting Bolts(Front Connected Terminals)

For Rear Connected Studs(Insulated Panel)


Page 11

O N

OFF

6.281(159.48)

.075(19.04)

CL Handle

.075(19.04)

.406(10.31)

2.500(63.48)

.063(1.59)

.438(11.11)

2.016(51.18)

6.031(153.13)

12.063(306.27)

3.141(79.74)

5.031(127.74) 2.516

(63.87)

9.938(252.31)

5.781(146.79)

13.688(347.53)

11.063(281.27)

22.125(561.75)

4.719(119.81)

6.156(156.31) .313(7.93)

Magnetic TripAdjustment

1.000(25.39)

3.016(76.57)

3.016(76.57)

4.531(115.05)

.656(16.66)

2.469(62.68)

2.266(57.52)

1 TaperEach Side

4.031(102.35)

4.031(102.35) Current Carrying Parts areOmitted from Center Pole

for 2-Pole Breakers

Connectors Maybe MountedEdgewise orFlatwise

C L o

f B

reak

er

1.375(34.91)

4.125(104.73)

9.063(230.10)

9.938(252.31)

1.500(38.09)

3.406(86.48)

.438(11.11)

5.625(142.82)

1.500(38.09)

.438 (11.11)Dia. Holes

6.281(159.48)

14.438(366.57)

.750(19.04)

.781(19.84)

Dia.

6.250 R(152.44) R

18On

Removable HandleExtension SuppliedWith Breaker

12 Tripped

18ResetMaximum

10.500

(266.6

0) R

1TapperEach Side

.938(23.80)

12Off

CL Handle


Type PB Tri-Pac Breaker


Line End

Load End



31-500A

Type PB Tri-Pac Breaker



Page 12

October 1997

Westinghouse AB DE-ION Current Limiting Circuit BreakersType PB Tri-Pac Circuit Breaker, Drilling Plans


Printed in U.S.A.


C L B

reak

er

5.031(127.74)

4.719(119.81)

2.359(59.90)

3.250(82.52)

6.938(176.14)

4.875(123.78)

Recommend .875 (22.22)Dia. Hole to Show AmpereRating

.313 R(7.93) R

CL Handle

CL Handle

C L B

reak

er

2.516(63.87)

9.938(252.31)

3.688(347.53)

4.031(102.35)

2.016(51.18)

.406 (10.31) Dia. or

.375 (9.52) - 16 Tap(4) Holes

For Mounting Bolts Front Cover Cutout

Line End

Load End

Breakers Dimension

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Transcript of Breakers Dimension