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Available Now! 
Available Now!Noark
B1E3P80
Miniature Circuit Breaker, UL1077, 3-Poles, 80A, 5kA, 480Y/277VAC, Supplementary Protection
$41.14$41.14 -
$29.68$29.68 -
Available Now! 
Available Now!Weg
UMBW-1B1-20
MCB, UL1077, 1-Pole, B-Curve, 20 Amp, 277VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$9.25$9.25 -
Weg
UMBW-1B1-12
MCB, UL1077, 1-Pole, B-Curve, 12 Amp, 277VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series
$9.25$9.25 -
Noark
M1S125T3L
MCCB, UL489, M1S, 3 Pole, 125 Amp (125A), 50ka @ 240VAC, 35kA @ 480VAC, 14kA @ 600VAC, 20kA @ 600VDC, 150 A Frame, Adjustable Thermal/Magnetic Trip, Lug Line/Load Side Connection, Molded Case Circuit Breaker
$352.75$352.75 -
Noark
M1S30T3L
MCCB, UL489, M1S, 3 Pole, 30 Amp (30A), 50kA @ 240VAC, 35kA @ 480VAC, 14kA @ 600VAC, 20kA @ 600VDC, 150 A Frame Size, Fixed Thermal/Magnetic Trip, Lug Line/Load Side Connection, Molded Case Circuit Breaker
$240.55$240.55 -
Noark
M1S100T3L
MCCB, UL489, M1S, 3 Pole, 100 Amp (100A), 50kA @ 240VAC, 35kA @ 480VAC, 14kA @ 600VAC, 20kA @ 600VDC, 150 A Frame Size, Adjustable Thermal/Magnetic Trip, Line/Load Lug Connection, Molded Case Circuit Breaker
$240.55$240.55 -
Noark
M1S40T3L
MCCB, UL489, M1S, 3 Pole, 40 Amp (40A), 50kA @ 240VAC, 35kA @ 480VAC, 14kA @ 480VAC, 20kA @ 600VDC, 150 A Frame, Fixed Thermal/Magnetic Trip, Lug Line/Load Side Connection, Molded Case Circuit Breaker
$240.55$240.55 -
Noark
M1S50T3L
MCCB, UL489, M1S, 3 Pole, 50 Amp (50A), 50kA @ 240VAC, 35kA @ 480VAC, 14kA @ 480VAC, 20kA @ 600VDC, 150 A Frame, Adjustable Thermal/Fixed Magnetic Trip, Lug Line/Load Side Connection, Molded Case Circuit Breaker
$240.55$240.55 -
Noark
M1S150T3L
MCCB, UL489, M1S, 3 Pole, 150 Amp (150A), 50kA @ 240VAC, 35kA @ 480VAC, 14kA @ 600VAC, 20kA @ 600VDC, 150 A Frame, Adjustable Thermal/Magnetic Trip, Lug Line/Load Side Connection, Molded Case Circuit Breaker
$352.75$352.75 -
Noark
M1S70T3L
MCCB, UL489, M1S, 3 Pole, 70 Amp (70A), 50kA @ 240VAC, 35kA @ 480VAC, 14kA @ 480VAC, 20kA @ 600VDC, 150 A Frame, Adjustable Thermal/Fixed Magnetic Trip, Lug Line/Load Side Connection, Molded Case Circuit Breaker
$240.55$240.55 -
Noark
M1S20T3L
MCCB, UL489, M1S, 3 Pole, 20 Amp (20A), 50kA @ 240VAC, 35kA @ 480VAC, 14kA @ 600VAC, 20kA @ 600VDC, 150 A Frame, Fixed Thermal/Magnetic Trip, Lug Line/Load Side Connection, Molded Case Circuit Breaker
$240.55$240.55
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