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Available Now! 
Available Now!Noark
B1N3D50
Miniature Circuit Breaker, UL489, 3-Poles, D-Curve, 50A, 240VAC, 10kA, Box Lugs
$56.18$56.18 -
$56.18$56.18 -
Available Now! 
Available Now!LS Electric
0628048463
MCB, UL1077, 3-Pole, D-Curve, 30 Amp, 10kA, 240VAC, Thermal Magnetic Miniature Circuit Breaker, NCNR
$37.66$37.66 -
Available Now! 
Available Now!ABL Sursum
3D60UR
Circuit Breaker, 3-Pole, D-Curve, 60 Amp, UL1077, 480Y/277VAC, 10kA, Supplementary Protection
$50.15$50.15 -
LS Electric
0628034463
MCB, UL1077, 3-Pole, D-Curve, 63 Amp, 6kA, 480Y/277VAC, Thermal Magnetic Miniature Circuit Breaker
$49.28$49.28 -
$56.18$56.18 -
$67.82$67.82 -
$56.18$56.18 -
LS Electric
0628038163
MCB, UL489, 3-Pole, D-Curve, 40 Amp, 10kA, 240VAC, Thermal Magnetic Miniature Circuit Breaker
$91.64$91.64 -
LS Electric
0628049363
MCB, UL1077, 3-Pole, D-Curve, 5 Amp, 6kA, 480Y/277VAC, Thermal Magnetic Miniature Circuit Breaker
$37.66$37.66 -
$88.84$88.84 -
ABL Sursum
3D05UR
Circuit Breaker, 3-Pole, D-Curve, 0.5 Amp, UL1077, 480Y/277VAC, 10kA, Supplementary Protection
$47.29$47.29
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