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Weg
UMBW-1D1-20
MCB, UL1077, 1-Pole, D-Curve, 20 Amp, 277VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$11.75$11.75 -
Available Now! 
Available Now!Weg
UMBW-4D3-10
MCB, UL489, 3-Pole, D-Curve, 10 Amp, 277/480Y VAC, 125VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$74.26$74.26 -
Available Now! 
Available Now!Noark
B1N1D10
Miniature Circuit Breaker, UL489, 1-Pole, D-Curve, 10A, 240VAC/60VDC, 10kA, Box Lugs
$19.30$19.30 -
Weg
UMBW-1C2-20
MCB, UL1077, 2-Pole, C-Curve, 20 Amp, 277/480Y VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$22.56$22.56 -
Available Now! 
Available Now!LS Electric
0628030363
MCB, UL1077, 3-Pole, D-Curve, 40 Amp, 10kA, 240VAC, Thermal Magnetic Miniature Circuit Breaker
$33.76$33.76 -
LS Electric
0628032463
MCB, UL1077, 3-Pole, C-Curve, 10 Amp, 6kA, 480Y/277VAC, Thermal Magnetic Miniature Circuit Breaker
$25.97$25.97 -
Available Now! 
Available Now!LS Electric
0628039863
MCB, UL489, 3-Pole, C-Curve, 10 Amp, 10kA, 480Y/277VAC, Thermal Magnetic Miniature Circuit Breaker
$82.14$82.14 -
$53.59$53.59 -
Available Now! 
Available Now!Noark
B1E1C15
Miniature Circuit Breaker, UL1077, 1-Pole, C-Curve, 15A, 5kA, 277VAC, Supplementary Protection
$14.30$14.30 -
Available Now! 
Available Now!Noark
B1E3P80
Miniature Circuit Breaker, UL1077, 3-Poles, 80A, 5kA, 480Y/277VAC, Supplementary Protection
$51.38$51.38 -
$19.30$19.30 -
$19.30$19.30
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