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Available Now! 
Available Now!Noark
B1N2D10
Miniature Circuit Breaker, UL489, 2-Poles, D-Curve, 10A, 240VAC/125VDC, 10kA, Box Lugs
$22.49$22.49 -
Noark
B1E2D5
Miniature Circuit Breaker, UL1077, 2-Poles, D-Curve, 5A, 5kA, 480Y/277VAC, Supplementary Protection
$28.60$28.60 -
Available Now! 
Available Now!LS Electric
0627056863
MCB, UL489, 2-Pole, D-Curve, 15 Amp, 10kA, 480Y/277VAC, Thermal Magnetic Miniature Circuit Breaker, This is the Recommended Replacement for 0627056963, BK63HU 2P D15A 10kA 240VAC UL489.
$55.52$55.52 -
Noark
B1N2D60
Miniature Circuit Breaker, UL489, 2-Poles, D-Curve, 60A, 240VAC/125VDC, 10kA, Box Lugs
$36.87$36.87 -
Noark
B1E2D30
Miniature Circuit Breaker, UL1077, 2-Poles, D-Curve, 30A, 5kA, 480Y/277VAC, Supplementary Protection
$28.60$28.60 -
Available Now! 
Available Now!Noark
B1E2D40
Miniature Circuit Breaker, UL1077, 2-Poles, D-Curve, 40A, 5kA, 480Y/277VAC, Supplementary Protection
$28.60$28.60 -
Weg
UMBW-1D2-50
MCB, UL1077, 2-Pole, D-Curve, 50 Amp, 277/480Y VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$22.56$22.56 -
$63.04$63.04 -
Noark
B1E2D10
Miniature Circuit Breaker, UL1077, 2-Poles, D-Curve, 10A, 5kA, 480Y/277VAC, Supplementary Protection
$28.60$28.60 -
Noark
B1N2D13
Miniature Circuit Breaker, UL489, 2-Poles, D-Curve, 13A, 240VAC/125VDC, 10kA, Box Lugs
$36.87$36.87 -
LS Electric
0627048163
MCB, UL489, 2-Pole, D-Curve, 50 Amp, 10kA, 240VAC, Thermal Magnetic Miniature Circuit Breaker
$64.21$64.21 -
Available Now! 
$59.22$59.22
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