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LS Electric
0626034763
MCB, UL1077, 1-Pole, B-Curve, 6 Amp, 6kA, 277VAC, Thermal Magnetic Miniature Circuit Breaker
$7.62$7.62 -
Available Now! 
Available Now!LS Electric
0626043163
MCB, UL489, 1-Pole, C-Curve, 2 Amp, 10kA, 277VAC, Thermal Magnetic Miniature Circuit Breaker
$17.86$17.86 -
$19.30$19.30 -
Available Now! 
Available Now!LS Electric
0626035663
MCB, UL1077, 1-Pole, C-Curve, 1 Amp, 6kA, 277VAC, Thermal Magnetic Miniature Circuit Breaker
$7.62$7.62 -
LS Electric
0626036363
MCB, UL1077, 1-Pole, C-Curve, 20 Amp, 6kA, 277VAC, Thermal Magnetic Miniature Circuit Breaker
$7.62$7.62 -
LS Electric
0628048063
MCB, UL1077, 3-Pole, C-Curve, 30 Amp, 10kA, 240VAC, Thermal Magnetic Miniature Circuit Breaker, NCNR
$25.97$25.97 -
Available Now! 
Available Now!Noark
B1E2D20
Miniature Circuit Breaker, UL1077, 2-Poles, D-Curve, 20A, 5kA, 480Y/277VAC, Supplementary Protection
$28.60$28.60 -
Available Now! 
Available Now!Noark
B1N2C30
Miniature Circuit Breaker, UL489, 2-Poles, C-Curve, 30A, 240VAC/125VDC, 10kA, Box Lugs
$36.87$36.87 -
Available Now! 
Available Now!Weg
UMBW-1C2-40
MCB, UL1077, 2-Pole, C-Curve, 40 Amp, 277/480Y VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$22.56$22.56 -
LS Electric
0626032063
MCB, UL1077, 1-Pole, C-Curve, 4 Amp, 10kA, 120/240VAC, Thermal Magnetic Miniature Circuit Breaker
$7.62$7.62 -
Available Now! 
Available Now!Weg
UMBW-1C1-6
MCB, UL1077, 1-Pole, C-Curve, 6 Amp, 277VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$11.75$11.75 -
LS Electric
0626037663
MCB, UL1077, 1-Pole, D-Curve, 20 Amp, 6kA, 277VAC, Thermal Magnetic Miniature Circuit Breaker
$8.26$8.26
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