Circuit Breakers
40-630 Amp
40
OF8451
#8
45
OF8451
#8
50
OF8451
#8
55
OF8451
#6
60
OF8451
70
OF8451
75
OF8451
80
OF8451
90
OF8451
100
OF8451
125
OF8451
150
OF8451
160
OF8451
2/0
Derate by Temperature
175
OF8451
2/0
180
OF8451
3/0
200
OF8451
3/0
225
OA7822
250
OA7822
300
OA7822
350
OA7822
400
OA7822
450
OF8452
500
OF8452
600
OF9721
630
OF9721
1-600 MCM #4 or
2-250 MCM to
2-1/0
Mounting 70 in lbs.
Wire Lug is
375 in lb.
2-500 MCM-750
MCM Al/Cu 480
in lbs.
3-2/0-400 MCM
Al/Cu 480 in lbs.
#6
#4
#4
#3
#3
200 Amp Frame
#4
#1
1/0
4/0
250 MCM
350 MCM
500 MCM
600 MCM
400 Amp Frame
Single Hole 0.656
Dia. #6 to 300
MCM Copper or
Aluminum Single
Conductor Only
Mounting
Bolt 70 in lbs. Wire
Lug is
375 in lbs.
Wire Size per
310-16*
Frame
Lug Part #
C.B.
Rated Current........................ 225-400 Amps
Interrupt Rating...................... 25,000 Amps
Trip......................................... Thermal Magnetic
Curve..................................... #200
Rating Temperature............... 40°C
Frame Size............................ 400 Amp
Rated Current........................ 450-630 Amps
Interrupt Rating...................... 35,000 Amps
Trip......................................... Thermal Magnetic
Curve..................................... #200
Rating Temperature............... 40°C
Frame Size............................ 800 Amp
Temperature °C
20
30
40
50
Rated Current
110
105
100
95
700 MCM or 2-4/0
2-250 MCM
2-350 MCM or 3-3/0
2-400 MCM
800 Amp
Frame
Lug Description
Rated Current........................ 40-200 Amps
Interrupt Rating...................... 18,000 Amps
Trip......................................... Thermal Magnetic
Curve..................................... #200
Rating Temperature............... 40°C
Frame Size............................ 200 Amp
C.B.
Amps
* Section 240.4 of the 2005 NEC allows the next higher standard overcurrent device rating above the ampacity of the
conductors being protected provided the next higher rating does not exceed 800 amperes. Because of derates and individual
AHJ preferences, that was not taken into account in the above chart.
All circuit breakers are UL 489 Listed for 208, 240, 480 Volts Trip Curve on back side.
CIRCUIT BREAKERS
COORDINATION TRIP CURVE
LEHF0043-00 (06/09)
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