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Noark
B1D1D20
Miniature Circuit Breaker, UL489, 1-Pole, D-Curve, 20 Amp, 10kA, 125VDC, Box Lug, B1D Series
$29.82$29.82 -
Noark
B1E3D10
Miniature Circuit Breaker, UL1077, 3-Poles, D-Curve, 10A, 5kA, 480Y/277VAC, Supplementary Protection
$43.12$43.12 -
Available Now! 
Available Now!Noark
B1E3D40
Miniature Circuit Breaker, UL1077, 3-Poles, D-Curve, 40A, 5kA, 480Y/277VAC, Supplementary Protection
$43.12$43.12 -
Available Now! 
Available Now!LS Electric
0626030963
MCB, UL1077, 1-Pole, B-Curve, 10 Amp, 10kA, 120/240VAC, Thermal Magnetic Miniature Circuit Breaker
$7.62$7.62 -
LS Electric
0626031763
MCB, UL1077, 1-Pole, C-Curve, 1 Amp, 10kA, 120/240VAC, Thermal Magnetic Miniature Circuit Breaker
$7.62$7.62 -
Noark
B1E2D20
Miniature Circuit Breaker, UL1077, 2-Poles, D-Curve, 20A, 5kA, 480Y/277VAC, Supplementary Protection
$28.60$28.60 -
Weg
MPW18-3-D025
Manual Motor Protector, 18A, 1.6-2.5A Overload Setting Range, 3-Pole, 690V, 50/60Hz, On/Off Pushbutton, Screw Terminal, IP20
$40.70$40.70 -
Available Now! 
Available Now!Weg
UMBW-1C2-10
MCB, UL1077, 2-Pole, C-Curve, 10 Amp, 277/480Y VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$22.56$22.56 -
Weg
UMBW-4C2-3
MCB, UL489, 2-Pole, C-Curve, 3 Amp, 277/480VAC, 125VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$50.29$50.29 -
Available Now! 
Available Now!Weg
MPW40-3-U020
Manual Motor Protector, 40A, 16-20A Overload Setting Range, 3-Pole, Screw Terminal, Rotary Handle, IP20
$63.96$63.96 -
Weg
UMBW-1C2-15
MCB, UL1077, 2-Pole, C-Curve, 15 Amp, 277/480VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$22.56$22.56 -
Noark
B1E1C2
Miniature Circuit Breaker, UL1077, 1-Pole, C-Curve, 2A, 5kA, 277VAC, Supplementary Protection
$14.30$14.30
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