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LS Electric
0628038363
MCB, UL489, 3-Pole, D-Curve, 63 Amp, 10kA, 240VAC, Thermal Magnetic Miniature Circuit Breaker
$119.96$119.96 -
LS Electric
0628046363
MCB, UL489, 3-Pole, D-Curve, 30 Amp, 10kA, 240VAC, Thermal Magnetic Miniature Circuit Breaker
$91.64$91.64 -
Available Now! 
Available Now!LS Electric
0628047063
MCB, UL489, 3-Pole, D-Curve, 5 Amp, 10kA, 480Y/277VAC, Thermal Magnetic Miniature Circuit Breaker
$91.64$91.64 -
$71.65$71.65 -
ABL Sursum
3D50UL
MCCB, UL489, 3-Pole, D-Curve, 50 Amp, 10kA, 240VAC, 50/60Hz, 10kA Short Circuit Interrupting Capacity Protection, DIN Rail Mounting, 17.5mm Width, Thermal Magnetic, Miniature Molded Case Circuit Breaker, IP20
$94.56$94.56 -
ABL Sursum
3D5UR
Circuit Breaker, 3-Pole, D-Curve, 5 Amp, UL1077, 480Y/277VAC, 10kA, Supplementary Protection
$47.29$47.29 -
Noark
B1E3D16
Miniature Circuit Breaker, UL1077, 3-Poles, D-Curve, 16A, 5kA, 480Y/277VAC, Supplementary Protection
$43.11$43.11 -
Available Now! 
Available Now!Noark
B1E3D6
Miniature Circuit Breaker, UL1077, 3-Poles, D-Curve, 6A, 5kA, 480Y/277VAC, Supplementary Protection
$22.48$22.48 -
$67.82$67.82 -
$67.82$67.82 -
Sprecher and Schuh
L9-63/3/D
Miniature Circuit Breaker, D-Curve, 63 Amp, 240VAC, 10kA, 3-Pole, UL489 / CSA / CE, IP20
$327.22$327.22 -
Weg
UMBW-1D3-10
MCB, UL1077, 3-Pole, D-Curve, 10 Amp, 277/480Y VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$30.55$30.55
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