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$63.04$63.04 -
Noark
B1D2C30
Miniature Circuit Breaker, UL489, 2-Poles, C-Curve, 30 Amp, 10kA, 250VDC, Box Lug, B1D Series
$59.66$59.66 -
Noark
B1E1B10
Miniature Circuit Breaker, UL1077, 1-Pole, B-Curve, 10A, 5kA, 277VAC, Supplementary Protection
$14.30$14.30 -
Noark
B1E1C6
Miniature Circuit Breaker, UL1077, 1-Pole, C-Curve, 6A, 5kA, 277VAC, Supplementary Protection
$14.30$14.30 -
Available Now! 
Available Now!Noark
B1E2C30
Miniature Circuit Breaker, UL1077, 2-Poles, C-Curve, 30A, 5kA, 480Y/277VAC, Supplementary Protection
$28.60$28.60 -
Noark
B1E2D15
Miniature Circuit Breaker, UL1077, 2-Poles, D-Curve, 15A, 5kA, 480Y/277VAC, Supplementary Protection
$28.60$28.60 -
$67.82$67.82 -
Noark
B1N2C60
Miniature Circuit Breaker, UL489, 2-Poles, C-Curve, 60A, 240VAC/125VDC, 10kA, Box Lugs
$36.87$36.87 -
$54.66$54.66 -
Sprecher and Schuh
L9-3/1/C
Miniature Circuit Breaker, C-Curve, 3 Amp, 277VAC/48VDC, 10kA, 1-Pole, UL489 / CSA / CE, IP20
$82.61$82.61 -
Weg
UBW225N-FTU125-3A
MCCB, 125A@480VAC, 35kA IC, with Lugs, 3-Pole, UL489, Fixed Thermal & Magnetic
$422.40$422.40 -
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
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