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Weg
UMBW-4C2-3
MCB, UL489, 2-Pole, C-Curve, 3 Amp, 277/480VAC, 125VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$50.29$50.29 -
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 -
Weg
UMBW-1C2-15
MCB, UL1077, 2-Pole, C-Curve, 15 Amp, 277/480VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$22.56$22.56 -
Noark
B1E1C2
Miniature Circuit Breaker, UL1077, 1-Pole, C-Curve, 2A, 5kA, 277VAC, Supplementary Protection
$14.30$14.30 -
Available Now! 
Available Now!Noark
B1N1C30
Miniature Circuit Breaker, UL489, 1-Pole, C-Curve, 30A, 240VAC/60VDC, 10kA, Box Lugs
$17.57$17.57 -
Available Now! 
Available Now!LS Electric
0626043763
MCB, UL489, 1-Pole, C-Curve, 20 Amp, 10kA, 277VAC, Thermal Magnetic Miniature Circuit Breaker
$17.86$17.86 -
LS Electric
0627038963
MCB, UL1077, 2-Pole, C-Curve, 40 Amp, 10kA, 240VAC, Thermal Magnetic Miniature Circuit Breaker
$16.30$16.30 -
LS Electric
0628032663
MCB, UL1077, 3-Pole, C-Curve, 20 Amp, 6kA, 480Y/277VAC, Thermal Magnetic Miniature Circuit Breaker
$25.97$25.97 -
LS Electric
0628049163
MCB, UL1077, 3-Pole, C-Curve, 15 Amp, 6kA, 480Y/277VAC, Thermal Magnetic Miniature Circuit Breaker
$25.97$25.97 -
$23.73$23.73 -
Noark
B1E2C6
Miniature Circuit Breaker, UL1077, 2-Poles, C-Curve, 6A, 5kA, 480Y/277VAC, Supplementary Protection
$28.60$28.60 -
$17.57$17.57
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