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Noark
B1E2C30
Miniature Circuit Breaker, UL1077, 2-Poles, C-Curve, 30A, 5kA, 480Y/277VAC, Supplementary Protection
$28.60$28.60 -
Noark
B1E2C40
Miniature Circuit Breaker, UL1077, 2-Poles, C-Curve, 40A, 5kA, 480Y/277VAC, Supplementary Protection
$28.60$28.60 -
$22.58$22.58 -
$23.73$23.73 -
$45.26$45.26 -
$66.70$66.70 -
Available Now! 
Available Now!Noark
B1N1C6
Miniature Circuit Breaker, UL489, 1-Pole, C-Curve, 6A, 240VAC/60VDC, 10kA, Box Lugs
$17.57$17.57 -
Available Now! 
Available Now!Noark
B1N3D50
Miniature Circuit Breaker, UL489, 3-Poles, D-Curve, 50A, 240VAC, 10kA, Box Lugs
$56.18$56.18 -
$255.36$255.36 -
$255.36$255.36 -
Weg
UMBW-1B1-4
MCB, UL1077, 1-Pole, B-Curve, 4 Amp, 277VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$11.75$11.75 -
Weg
UMBW-1C2-1
MCB, UL1077, 2-Pole, C-Curve, 1 Amp, 277/480Y VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$22.56$22.56
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