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Weg
UMBW-4C2-2
MCB, UL489, 2-Pole, C-Curve, 2 Amp, 277/480Y VAC, 125VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$39.59$39.59 -
Weg
UMBW-4C2-6
MCB, UL489, 2-Pole, C-Curve, 6 Amp, 277/480Y VAC, 125 VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$39.59$39.59 -
Available Now! 
Available Now!LS Electric
02090005UL
Molded Case Circuit Breaker, 3-Pole, 250A, 80%, 65kA, Fixed Thermal/Magnetic, Lugs Line/Load Side
$601.87$601.87 -
LS Electric
0627057063
MCB, UL489, 2-Pole, D-Curve, 30 Amp, 10kA, 240VAC, Thermal Magnetic Miniature Circuit Breaker
$38.73$38.73 -
$17.66$17.66 -
$30.04$30.04 -
$35.34$35.34 -
Available Now! 
Available Now!Noark
B1E2D10
Miniature Circuit Breaker, UL1077, 2-Poles, D-Curve, 10A, 5kA, 480Y/277VAC, Supplementary Protection
$22.95$22.95 -
Noark
B1N2B10
Miniature Circuit Breaker, UL489, 2-Poles, B-Curve, 10A, 240VAC/125VDC, 10kA, Box Lugs
$30.52$30.52 -
Available Now! 
Available Now!Weg
UMBW-1C1-10
MCB, UL1077, 1-Pole, C-Curve, 10 Amp, 277VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$9.25$9.25 -
LS Electric
0626031063
MCB, UL1077, 1-Pole, B-Curve, 16 Amp, 10kA, 120/240VAC, Thermal Magnetic Miniature Circuit Breaker
$7.71$7.71 -
LS Electric
0626037163
MCB, UL1077, 1-Pole, D-Curve, 3 Amp, 6kA, 277VAC, Thermal Magnetic Miniature Circuit Breaker
$7.71$7.71
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