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ABL Sursum
1D20UR
Circuit Breaker, 1-Pole, D-Curve, 20 Amp, UL1077, 277VAC, 10kA, Supplementary Protection
$15.76$15.76 -
ABL Sursum
1D5UR
Circuit Breaker, 1-Pole, D-Curve, 5 Amp, UL1077, 277VAC, 10kA, Supplementary Protection
$15.76$15.76 -
Available Now! 
$59.22$59.22 -
$19.30$19.30 -
$19.30$19.30 -
Available Now! 
Available Now!Noark
B1N2D30
Miniature Circuit Breaker, UL489, 2-Poles, D-Curve, 30A, 240VAC/125VDC, 10kA, Box Lugs
$36.87$36.87 -
$56.18$56.18 -
Weg
UMBW-4D3-50
MCB, UL489, 3-Pole, D-Curve, 50 Amp, 240VAC/125VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$74.26$74.26 -
$29.62$29.62 -
$23.73$23.73 -
$56.18$56.18 -
Available Now! 
Available Now!Weg
UMBW-1D2-20
MCB, UL1077, 2-Pole, D-Curve, 20 Amp, 277/480Y VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$22.56$22.56
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