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Weg
UMBW-1C2-40
MCB, UL1077, 2-Pole, C-Curve, 40 Amp, 277/480Y VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$22.56$22.56 -
LS Electric
0626032063
MCB, UL1077, 1-Pole, C-Curve, 4 Amp, 10kA, 120/240VAC, Thermal Magnetic Miniature Circuit Breaker
$7.62$7.62 -
Available Now! 
Available Now!LS Electric
0626035663
MCB, UL1077, 1-Pole, C-Curve, 1 Amp, 6kA, 277VAC, Thermal Magnetic Miniature Circuit Breaker
$7.62$7.62 -
LS Electric
0626037663
MCB, UL1077, 1-Pole, D-Curve, 20 Amp, 6kA, 277VAC, Thermal Magnetic Miniature Circuit Breaker
$8.26$8.26 -
LS Electric
0626043163
MCB, UL489, 1-Pole, C-Curve, 2 Amp, 10kA, 277VAC, Thermal Magnetic Miniature Circuit Breaker
$17.86$17.86 -
Available Now! 
Available Now!LS Electric
0626043563
MCB, UL489, 1-Pole, C-Curve, 10 Amp, 10kA, 277VAC, Thermal Magnetic Miniature Circuit Breaker
$17.86$17.86 -
LS Electric
0626043363
MCB, UL489, 1-Pole, C-Curve, 4 Amp, 10kA, 277VAC, Thermal Magnetic Miniature Circuit Breaker
$17.86$17.86 -
Available Now! 
Available Now!LS Electric
0626050563
MCB, UL489, 1-Pole, C-Curve, 15 Amp, 10kA, 277VAC, Thermal Magnetic Miniature Circuit Breaker
$15.20$15.20 -
Noark
B1N2C15
Miniature Circuit Breaker, UL489, 2-Poles, C-Curve, 15A, 240VAC/125VDC, 10kA, Box Lugs
$36.87$36.87 -
Weg
UMBW-1C2-5
MCB, UL1077, 2-Pole, C-Curve, 5 Amp, 277/480Y VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$22.56$22.56 -
Weg
MPW40-3-U025
Manual Motor Protector, 40A, 20-25A Overload Setting Range, 3-Pole, Screw Terminal, Rotary Handle, IP20
$75.57$75.57 -
Noark
B1N2C50
Miniature Circuit Breaker, UL489, 2-Poles, C-Curve, 50A, 240VAC/125VDC, 10kA, Box Lugs
$36.87$36.87
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