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Noark
B1E2C50
Miniature Circuit Breaker, UL1077, 2-Poles, C-Curve, 50A, 5kA, 480Y/277VAC, Supplementary Protection
$28.60$28.60 -
$45.26$45.26 -
Available Now! 
Available Now!Weg
UMBW-1D2-6
MCB, UL1077, 2-Pole, D-Curve, 6 Amp, 277/480Y VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$13.61$13.61 -
Weg
UMBW-4D2-50
MCB, UL489, 2-Pole, D-Curve, 50 Amp, 277/480VAC, 125VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$50.29$50.29 -
LS Electric
0627041863
MCB, UL1077, 2-Pole, C-Curve, 1 Amp, 6kA, 480Y/277VAC, Thermal Magnetic Miniature Circuit Breaker
$23.65$23.65 -
LS Electric
0627048463
MCB, UL489, 2-Pole, B-Curve, 2 Amp, 10kA, 480Y/277VAC, Thermal Magnetic Miniature Circuit Breaker
$55.52$55.52 -
LS Electric
0627057863
MCB, UL1077, 2-Pole, C-Curve, 30 Amp, 10kA, 240VAC, Thermal Magnetic Miniature Circuit Breaker
$23.65$23.65 -
$63.04$63.04 -
ABL Sursum
2D63UR
Circuit Breaker, 2-Pole, D-Curve, 63 Amp, UL1077, 480Y/277VAC, 10kA, Supplementary Protection
$33.41$33.41 -
$42.04$42.04 -
Noark
B1D2C1
Miniature Circuit Breaker, UL489, 2-Poles, C-Curve, 1 Amp, 10kA, 250VDC, Box Lug, B1D Series
$59.66$59.66 -
Available Now! 
Available Now!Noark
B1E2B15
Miniature Circuit Breaker, UL1077, 2-Poles, B-Curve, 15A, 5kA, 480Y/277VAC, Supplementary Protection
$16.90$16.90
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