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Noark
B1E3D10
Miniature Circuit Breaker, UL1077, 3-Poles, D-Curve, 10A, 5kA, 480Y/277VAC, Supplementary Protection
$35.93$35.93 -
Noark
B1N2C15
Miniature Circuit Breaker, UL489, 2-Poles, C-Curve, 15A, 240VAC/125VDC, 10kA, Box Lugs
$30.73$30.73 -
Available Now! 
Available Now!Weg
UMBW-1D3-30
MCB, UL1077, 3-Pole, D-Curve, 30 Amp, 277/480Y VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$24.05$24.05 -
Available Now! 
Available Now!Weg
UMBW-1C3-10
MCB, UL1077, 3-Pole, C-Curve, 10 Amp, 277/480Y VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$24.05$24.05 -
Available Now! 
Available Now!Weg
MPW80-3-U065
Manual Motor Protector, 80A, 50-65A Overload Setting Range, Trip Indication, 3-Pole, 690V, 50/60Hz, Terminal Box, Rotary Handle, IP20
$148.20$148.20 -
Noark
B1E1C2
Miniature Circuit Breaker, UL1077, 1-Pole, C-Curve, 2A, 5kA, 277VAC, Supplementary Protection
$11.92$11.92 -
Noark
B1E1D40
Miniature Circuit Breaker, UL1077, 1-Pole, D-Curve, 40A, 5kA, 277VAC, Supplementary Protection
$11.92$11.92 -
$19.78$19.78 -
Available Now! 
Available Now!Weg
MPW40-3-U010
Manual Motor Protector, 40A, 6.3-10A Overload Setting Range, 3-Pole, Screw Terminal, Rotary Handle, IP20
$53.43$53.43 -
Noark
B1E1D20
Miniature Circuit Breaker, UL1077, 1-Pole, D-Curve, 20A, 5kA, 277VAC, Supplementary Protection
$11.92$11.92 -
LS Electric
0626031763
MCB, UL1077, 1-Pole, C-Curve, 1 Amp, 10kA, 120/240VAC, Thermal Magnetic Miniature Circuit Breaker
$7.71$7.71 -
LS Electric
0628032663
MCB, UL1077, 3-Pole, C-Curve, 20 Amp, 6kA, 480Y/277VAC, Thermal Magnetic Miniature Circuit Breaker
$26.27$26.27
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