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Noark
B1N2B30
Miniature Circuit Breaker, UL489, 2-Poles, B-Curve, 30A, 240VAC/125VDC, 10kA, Box Lugs
$30.52$30.52 -
$45.05$45.05 -
Weg
DWB100JE100-3DX
MCCB, 100A@480Y/277VAC, 14kA IC, 80% Rated, 3-Pole, UL489, Fixed Thermal/Magnetic
$185.28$185.28 -
Noark
M1H90T22L
Molded Case Circuit Breaker, MCCB, UL489, M1H, 150 A Frame Size, 150kA @ 240VAC/100kA @ 480VAC, 90 Amp, Thermal Magnetic Trip, 2-Pole, Lug Line/Load Side Connection, EX9M1H Series
$275.40$275.40 -
Noark
M1N125T1L
Molded Case Circuit Breaker, MCCB, UL489, M1N, 150 A Frame Size, 100kA @ 240VAC / 65kA @ 480VAC, 125 Amp, Thermal-Magnetic Trip, 1-Pole, Lug Line/Load Side Connection Connection, EX9M1N Series
$185.30$185.30 -
Weg
MPW100-3-U075
Manual Motor Protector, 100A, 55-75A Overload Setting Range, 3-Pole, 690V, 50/60Hz, Terminal Box, IP20
$259.35$259.35 -
Weg
MPW40-3-C063
Manual Motor Protector, 40A, 0.40-0.63A Overload Setting Range, 3-Pole, Screw Terminal, Rotary Handle, IP20
$53.43$53.43 -
Available Now! 
Available Now!Weg
MPW40-3-D016
Manual Motor Protector, 40A, 1.0-1.6A Overload Setting Range, 3-Pole, Screw Terminal, Rotary Handle, IP20
$53.43$53.43 -
Weg
MPW40-3-U001
Manual Motor Protector, 40A, 0.63-1.0A Overload Setting Range, 3-Pole, Screw Terminal, Rotary Handle, IP20
$53.43$53.43 -
Available Now! 
Available Now!Weg
MPW40-3-U040
Manual Motor Protector, 40A, 32-40A Overload Setting Range, 3-Pole, Screw Terminal, Rotary Handle, IP20
$97.50$97.50 -
Weg
UBW250H-FTU250-3A
MCCB, 250A@480VAC, 65kA IC, with Lugs, 3-Pole, UL489, Fixed Thermal & Magnetic
$656.00$656.00 -
Weg
UMBW-1C2-3
MCB, UL1077, 2-Pole, C-Curve, 3 Amp, 277/480Y VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$17.76$17.76
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