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Available Now! 
Available Now!LS Electric
0627050263
MCB, UL489, 2-Pole, D-Curve, 2 Amp, 10kA, 480Y/277VAC, Thermal Magnetic Miniature Circuit Breaker
$38.73$38.73 -
Noark
B1N1C7
Miniature Circuit Breaker, UL489, 1-Pole, C-Curve, 7 Amp, 10kA, 240VAC / 60 VDC, Box Lug, B1N Series
$14.11$14.11 -
Available Now! 
Available Now!LS Electric
0628046963
MCB, UL489, 3-Pole, C-Curve, 15 Amp, 10kA, 480Y/277VAC, Thermal Magnetic Miniature Circuit Breaker
$63.94$63.94 -
Noark
B1D1D20
Miniature Circuit Breaker, UL489, 1-Pole, D-Curve, 20 Amp, 10kA, 125VDC, Box Lug, B1D Series
$23.89$23.89 -
$18.11$18.11 -
Weg
UMBW-4C3-20
MCB, UL489, 3-Pole, C-Curve, 20 Amp, 277/480Y VAC, 125VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$58.46$58.46 -
Noark
B1NQ2C50
Miniature Circuit Breaker, UL489, 2 Pole, C-Curve, 50 Amp, 10kA, 120/240 VAC, Box Lug, B1NQ Series
$41.48$41.48 -
Noark
B1D1D15
Miniature Circuit Breaker, UL489, 1-Pole, D-Curve, 15 Amp, 10kA, 125VDC, Box Lug, B1D Series
$23.89$23.89 -
Weg
UMBW-4C2-3
MCB, UL489, 2-Pole, C-Curve, 3 Amp, 277/480VAC, 125VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$39.59$39.59 -
Weg
UMBW-4C3-15
MCB, UL489, 3-Pole, C-Curve, 15 Amp (15A), 277/480Y VAC, 125VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series, Recommended Replacement for UMBW-4B3-15 (14361333), UMBW-4B3-16 (14361335) and UMBW-4C3-16 (13641892)
$58.46$58.46 -
Available Now! 
Available Now!Noark
B1N1C2
Miniature Circuit Breaker, UL489, 1-Pole, C-Curve, 2A, 240VAC/60VDC, 10kA, Box Lugs
$14.11$14.11 -
Available Now! 
Available Now!LS Electric
0626050563
MCB, UL489, 1-Pole, C-Curve, 15 Amp, 10kA, 277VAC, Thermal Magnetic Miniature Circuit Breaker
$18.08$18.08
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