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Available Now! 
Available Now!LS Electric
0626034463
MCB, UL1077, 1-Pole, B-Curve, 2 Amp, 6kA, 277VAC, Thermal Magnetic Miniature Circuit Breaker
$5.58$5.58 -
LS Electric
0626032463
MCB, UL1077, 1-Pole, C-Curve, 20 Amp, 10kA, 120/240VAC, Thermal Magnetic Miniature Circuit Breaker
$11.05$11.05 -
LS Electric
0626032063
MCB, UL1077, 1-Pole, C-Curve, 4 Amp, 10kA, 120/240VAC, Thermal Magnetic Miniature Circuit Breaker
$11.05$11.05 -
Available Now! 
Available Now!Weg
UMBW-1C1-4
MCB, UL1077, 1-Pole, C-Curve, 4 Amp, 277VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$11.75$11.75 -
Available Now! 
Available Now!Noark
B1N1B0.5
Miniature Circuit Breaker, UL489, 1-Pole, B-Curve, 0.5A, 240VAC/60VDC, 10kA, Box Lugs
$19.30$19.30 -
Noark
B1E1D20
Miniature Circuit Breaker, UL1077, 1-Pole, D-Curve, 20A, 5kA, 277VAC, Supplementary Protection
$14.30$14.30 -
$23.73$23.73 -
LS Electric
0626050563
MCB, UL489, 1-Pole, C-Curve, 15 Amp, 10kA, 277VAC, Thermal Magnetic Miniature Circuit Breaker
$25.91$25.91 -
LS Electric
0626052663
MCB, UL1077, 1-Pole, C-Curve, 8 Amp, 6kA, 277VAC, Thermal Magnetic Miniature Circuit Breaker
$11.05$11.05 -
LS Electric
0626032363
MCB, UL1077, 1-Pole, C-Curve, 16 Amp, 10kA, 120/240VAC, Thermal Magnetic Miniature Circuit Breaker
$11.05$11.05 -
LS Electric
0626030463
MCB, UL1077, 1-Pole, B-Curve, 1 Amp, 10kA, 120/240VAC, Thermal Magnetic Miniature Circuit Breaker,
$11.05$11.05 -
LS Electric
0626036163
MCB, UL1077, 1-Pole, C-Curve, 10 Amp, 6kA, 277VAC, Thermal Magnetic Miniature Circuit Breaker
$11.05$11.05
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