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Available Now! 
Available Now!LS Electric
0626043763
MCB, UL489, 1-Pole, C-Curve, 20 Amp, 10kA, 277VAC, Thermal Magnetic Miniature Circuit Breaker
$25.91$25.91 -
Available Now! 
Available Now!LS Electric
0626030963
MCB, UL1077, 1-Pole, B-Curve, 10 Amp, 10kA, 120/240VAC, Thermal Magnetic Miniature Circuit Breaker
$11.05$11.05 -
LS Electric
0626031763
MCB, UL1077, 1-Pole, C-Curve, 1 Amp, 10kA, 120/240VAC, Thermal Magnetic Miniature Circuit Breaker
$11.05$11.05 -
LS Electric
0627058163
MCB, UL1077, 2-Pole, D-Curve, 15 Amp, 10kA, 240VAC, Thermal Magnetic Miniature Circuit Breaker
$23.65$23.65 -
Noark
B1E1C2
Miniature Circuit Breaker, UL1077, 1-Pole, C-Curve, 2A, 5kA, 277VAC, Supplementary Protection
$14.30$14.30 -
Weg
UMBW-4C2-3
MCB, UL489, 2-Pole, C-Curve, 3 Amp, 277/480VAC, 125VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$50.29$50.29 -
Weg
UMBW-1C2-15
MCB, UL1077, 2-Pole, C-Curve, 15 Amp, 277/480VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$22.56$22.56 -
LS Electric
0627038963
MCB, UL1077, 2-Pole, C-Curve, 40 Amp, 10kA, 240VAC, Thermal Magnetic Miniature Circuit Breaker
$23.65$23.65 -
Noark
B1E1D40
Miniature Circuit Breaker, UL1077, 1-Pole, D-Curve, 40A, 5kA, 277VAC, Supplementary Protection
$14.30$14.30 -
Available Now! 
Available Now!Noark
B1N1C30
Miniature Circuit Breaker, UL489, 1-Pole, C-Curve, 30A, 240VAC/60VDC, 10kA, Box Lugs
$17.57$17.57 -
LS Electric
0627043263
MCB, UL1077, 2-Pole, D-Curve, 2 Amp, 6kA, 480Y/277VAC, Thermal Magnetic Miniature Circuit Breaker
$23.65$23.65 -
Available Now! 
Available Now!Weg
MPW40-3-U032
Manual Motor Protector, 40A, 25-32A Overload Setting Range, 3-Pole, Screw Terminal, Rotary Handle, IP20
$96.81$96.81
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