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Noark
B1N2C63
Miniature Circuit Breaker, UL489, 2-Poles, C-Curve, 63A, 240VAC/125VDC, 10kA, Box Lugs
$36.87$36.87 -
Weg
DWB100JH100-3DX
MCCB, 100A@480Y/277VAC, 14kA IC, 100% Rated, 3-Pole, UL489, Fixed Thermal/Magnetic
$267.65$267.65 -
Noark
M1D1503L
MCS, UL489, M1D, 150 A Frame Size, 150 Amp, 3-Pole, Line/Load Lug Connection, Ex9M1D Molded Case Switch Series
$315.06$315.06 -
Weg
UMBW-1D2-40
MCB, UL1077, 2-Pole, D-Curve, 40 Amp, 277/480Y VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$22.56$22.56 -
Weg
UMBW-4D1-10
MCB, UL489, 1-Pole, D-Curve, 10 Amp, 277VAC/60VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$24.91$24.91 -
LS Electric
02070005UL
MCCB, 3-Pole, 80 Amp, 35kA@480VAC, Fixed Thermal/Magnetic, Lugs Line/Load Side, 6.50 x 4.13 x 3.44" (HWD), Susol UL MCCB UTS150 Series, UL Listed, Molded Case Circuit Breaker
$559.25$559.25 -
LS Electric
02070006UL
MCCB, 3-Pole, 90 Amp, 35kA@480VAC, Fixed Thermal/Magnetic, Lugs Line/Load Side, 6.50 x 4.13 x 3.44" (HWD), Susol UL MCCB UTS150 Series, UL Listed, Molded Case Circuit Breaker
$559.25$559.25 -
LS Electric
0626031163
MCB, UL1077, 1-Pole, B-Curve, 20 Amp, 10kA, 120/240VAC, Thermal Magnetic Miniature Circuit Breaker
$6.68$6.68 -
LS Electric
0626040663
MCB, UL489, 1-Pole, C-Curve, 50 Amp, 10kA, 120/240VAC, Thermal Magnetic Miniature Circuit Breaker
$17.53$17.53 -
LS Electric
0626050963
MCB, UL1077, 1-Pole, B-Curve, 5 Amp, 10kA, 120/240VAC, Thermal Magnetic Miniature Circuit Breaker
$11.05$11.05 -
LS Electric
0627037063
MCB, UL1077, 2-Pole, B-Curve, 6 Amp, 10kA, 240VAC, Thermal Magnetic Miniature Circuit Breaker
$14.31$14.31 -
Available Now! 
Available Now!LS Electric
0627049263
MCB, UL489, 2-Pole, C-Curve, 1 Amp, 10kA, 480Y/277VAC, Thermal Magnetic Miniature Circuit Breaker
$33.59$33.59
A circuit breaker will interrupt the flow of current in an electrical circuit, safeguarding surrounding electrical components and wiring by preventing circuit overloads and short circuits.
a.k.a. MCB, MCCB, molded case breaker, supplementary protection, UL1077, UL489, UL508, MMP, manual motor protector