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Available Now! 
Available Now!Noark
B1E3D20
Miniature Circuit Breaker, UL1077, 3-Poles, D-Curve, 20A, 5kA, 480Y/277VAC, Supplementary Protection
$43.11$43.11 -
Noark
B1E2D2
Miniature Circuit Breaker, UL1077, 2-Poles, D-Curve, 2A, 5kA, 480Y/277VAC, Supplementary Protection
$28.60$28.60 -
Noark
B1E1D20
Miniature Circuit Breaker, UL1077, 1-Pole, D-Curve, 20A, 5kA, 277VAC, Supplementary Protection
$14.30$14.30 -
$23.73$23.73 -
Available Now! 
Available Now!Noark
B1E3D50
Miniature Circuit Breaker, UL1077, 3-Poles, D-Curve, 50A, 5kA, 480Y/277VAC, Supplementary Protection
$29.99$29.99 -
Noark
B1E3D15
Miniature Circuit Breaker, UL1077, 3-Poles, D-Curve, 15A, 5kA, 480Y/277VAC, Supplementary Protection
$43.11$43.11 -
$19.30$19.30 -
Available Now! 
Available Now!Noark
B1E2D20
Miniature Circuit Breaker, UL1077, 2-Poles, D-Curve, 20A, 5kA, 480Y/277VAC, Supplementary Protection
$28.60$28.60 -
Noark
B1E3D40
Miniature Circuit Breaker, UL1077, 3-Poles, D-Curve, 40A, 5kA, 480Y/277VAC, Supplementary Protection
$43.11$43.11 -
Noark
B1E3D10
Miniature Circuit Breaker, UL1077, 3-Poles, D-Curve, 10A, 5kA, 480Y/277VAC, Supplementary Protection
$43.11$43.11 -
Noark
B1D1D20
Miniature Circuit Breaker, UL489, 1-Pole, D-Curve, 20 Amp, 10kA, 125VDC, Box Lug, B1D Series
$29.83$29.83 -
Noark
B1E1D40
Miniature Circuit Breaker, UL1077, 1-Pole, D-Curve, 40A, 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