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Technical Data 
29-120 
Page 38 
Type PB TRI-PAC® Thermal Magnetic/Current Limiting Breakers 
600-1 600 Am peres, 600 Volts, 60 Hertz Ac®, 250 Volts De@, 2, 3 Poles Interchangeable Trip, 
Replaceable Cu rrent Limiters 
Complete 
Breaker 
Shipped as Frame, Trip Unit Current Limiters and 
Connectors 
Contin­
uous 
Ampere 
Rating 
@ 
Ac Magnetic 
Trip Setting 
(Set on High 
Side, Adjust­
able to Lower 
Limits) 
Includes Rear -Fram-e Only --Trip Un it Only -Current Limiters--
"T" Connectors® 
-- ---- --
1 Required Per Pole 
catalog ·--Catalog ---
·
-40°C Catalog Catalog Number Number Num ber Number 
Low 
_ __ 
f:l_igh__ 
2-Pole, 600 Volts Ac@ 
600 1 500 5000 
700 1 500 5000 
800 1 500 5000 
900 1 500 5000 
1 000 1 500 5000 
1 200 2000 6000 
1400 2500 7000 
1 600 3000 8000 
Approx. Sh ip. 
Wt. . . . . . . . . . . 
3-Pole, 600 Volts Ac 
600 1 500 5000 
700 1 500 5000 
800 1 500 5000 
900 1 500 5000 
1 000 1 500 5000 
1200 2000 6000 
1400 2500 7000 
1 600 3000 8000 
Approx. Ship. 
Wt. . . . . . . . . . . 
Current Limiters 
PB2600PR 
PB2700PR 
PB2800PR 
PB2900PR 
PB21 000PR 
PB21 200PR 
PB2 1400PR 
PB2 1600PR 
148 1bs. 
PB3600PR 
PB3700PR 
PB3800PR 
PB3900PR 
PB31000PR 
PB31 200PR 
PB31400PR 
PB31 600PR 
1 79 1bs. 
I ncluded with breaker, one req u i red per pole. 
Catalog 
Number 
Application 
1 OOOPBPR20 Supplied as standard on ratings thru 
1 000 amps. (Replaces l imiter 
1 500PBPR30 formerly suppl ied on 
600 and 700 amp ratings, and 
3000PBPR27 suppl ied on 800-1000 
amp ratings.) 
1 600PBPR30 Supplied as standard on 1 200-1600 
amp ratings. Optional on lower 
ratings where a h igher "cross-over 
point is desired. (Replaces l imiter 
4000PBPR30 formerly supplied on 
1200-1400 amp ratings, and 
5000PBPR42 supplied on 1 600 amp 
ratings. 
Refer to AD 29-160 for more complete application 
information. 
• Changed or added since previous issue. 
® Higher frequency calibration not available Min imum of 50 
Hertz calibration available on special order. 
@ 250 volts De rating applies only to magnetic only breakers. 
@ 2-pole breakers are supplied in 3-pole frames with current 
carrying parts omitted from center pole. 
® Shipped separately from breaker. 
® Not Underwriters' Laboratories, Inc. listed. 
I"JJ 50'C calibration not available on 1600 amp rating.@ 
Westing house Electric Corporation 
Distribution and Control Business Un it 
Electrical Components Division 
Pittsburgh, Pennsylvan ia, U .S.A. 1 5220 
PB2 1 600PRF 
PB2 1 600PRF 
PB21 600PRF 
PB21 600PRF 
PB21600PRF 
PB21 600PRF 
PB21 600PRF 
PB21 600PRF 
1 06 1bs. 
PB31600PRF 
PB31600PRF 
PB31 600PRF 
PB31 600PRF 
PB31 600PRF 
PB31600PRF 
PB31 600PRF 
PB31600PRF 
120 lbs. 
PB2600PRT 
PB2700PRT 
PB2800PRT 
PB2900PRT 
PB21 000PRT 
PB21200PRT 
PB21400PRT 
PB21600PRT 
1 8 1bs. 
PB3600PRT 
PB3700PRT 
PB3800PRT 
PB3900PRT 
PB31 000PRT 
PB31200PRT 
PB31400PRT 
PB31 600PRT 
23 1 bs. 
Special Calibrations® 
1 000PBPR20 
1 000PBPR20 
1 000PBPR20 
1 000PBPR20 
1 000PBPR20 
1 600PBPR30 
1 600PBPR30 
1600PBPR30 
4 1 bs . 
1 000PBPR20 
1 000PBPR20 
1 000PBPR20 
1 000PBPR20 
1 000PBPR20 
1 600PBPR30 
1600PBPR30 
1 600PBPR30 
4 1bs. 
Special cal ibration price additions apply to 
ampere ratings not l isted as standard, or for 
ambients other than 40°C or 50°C. See Appli­
cation Data 29- 1 60 for i nformation regarding 
special conditions. 
Type of 1 -24 25 or More 
Calibration Identical Units Identical Un its 
Thermal 
Ambient 
Add 1 5% ofTrip 
Unit List Price 
sooc Calibration® tZl 
None 
None 
Add suffix "V" to catalog nu mber for com­
plete breaker when ordering l isted ampere 
ratings for breakers to be used in 50°C am­
bients. Same price as standard 40°C breakers. 
Cl 
Listed with Underwriters' Laboratories, Inc. 
except as noted. (For C.S.A., see page 48.) 
TRI-PAC PB breakers meet the requ i rements 
for Class 1 7a and 26a circuit breakers as de­
fined in Federal Specification W-C-375b. 
Interrupting Ratings 
Underwriters' Laboratories, Inc. Listed 
600 Volts Ac Max. : 200,000 Amps. Sym. 
Based on NEMA Test Procedure 
250 Volts De @ : 1 00,000 Am ps. 
On a l l 3 phase Delta, G rounded 8 phase ap­
pl ications, refer to Westing house. 
Bus Bar Connectors ® 
"T" Connector for Cu/AI Bus 
Two requ ired per pole. For 
rear bus connection . Accepts 
up to four bus bolts. May be 
rotated 90°. Catalog N umber 
BA2000PB. 
Cable Connector@ 
(Optional) 
For "T" connector. Accepts 
four 400-600 M C M copper 
cables. 
Style N u m ber 505C706G04. 
Discount Symbol: CB-2 
Special Breakers® 
Magnetic Only Type TRI-PACS : Availab le on 
request. Refer to Appl ication Data 29- 1 60 for 
ava i lable trip ranges. 
List Prices: See Price List 29-020, Dis. CB-2 
May 1990 ww
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