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LS Electric
0627043463
MCB, UL1077, 2-Pole, D-Curve, 4 Amp, 6kA, 480Y/277VAC, Thermal Magnetic Miniature Circuit Breaker
$23.65$23.65 -
ABL Sursum
2D20UR
Circuit Breaker, 2-Pole, D-Curve, 20 Amp, UL1077, 480Y/277VAC, 10kA, Supplementary Protection
$31.53$31.53 -
Available Now! 
Available Now!Weg
UMBW-1D2-6
MCB, UL1077, 2-Pole, D-Curve, 6 Amp, 277/480Y VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$13.61$13.61 -
Weg
UMBW-4D2-50
MCB, UL489, 2-Pole, D-Curve, 50 Amp, 277/480VAC, 125VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$50.29$50.29 -
$63.04$63.04 -
ABL Sursum
2D63UR
Circuit Breaker, 2-Pole, D-Curve, 63 Amp, UL1077, 480Y/277VAC, 10kA, Supplementary Protection
$33.41$33.41 -
Noark
B1E2D32
Miniature Circuit Breaker, UL1077, 2-Poles, D-Curve, 32A, 5kA, 480Y/277VAC, Supplementary Protection
$28.60$28.60 -
Noark
B1E2D50
Miniature Circuit Breaker, UL1077, 2-Poles, D-Curve, 50A, 5kA, 480Y/277VAC, Supplementary Protection
$28.60$28.60 -
$44.13$44.13 -
LS Electric
0627044363
MCB, UL1077, 2-Pole, D-Curve, 63 Amp, 6kA, 480Y/277VAC, Thermal Magnetic Miniature Circuit Breaker
$27.35$27.35 -
LS Electric
0627048063
MCB, UL489, 2-Pole, D-Curve, 40 Amp, 10kA, 240VAC, Thermal Magnetic Miniature Circuit Breaker
$55.52$55.52 -
$42.04$42.04
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