Circuit Breakers

Circuit breakers are an essential component of any electrical system, protecting against power surges, short circuits, and other electrical hazards. They are also designed to trip when the electrical current exceeds a certain level, preventing damage to the electrical system. The breaker should be able to handle the amount of electrical current that flows through your system, so it's important to choose a breaker that is appropriately sized. A breaker that is too small won't be able to protect your electrical system, while a breaker that is too large will be more expensive and difficult to install.

  • B1D2D8 Noark Miniature Circuit Breakers, B1D UL 489, 2P, D Curve, 8A, 10 kA, 250 Vdc, Box Lug

    B1D2D8

    $52.64
    $58.49
    Miniature Circuit Breakers, B1D UL 489, 2P, D Curve, 8A, 10 kA, 250 Vdc, Box Lug
  • B1E1B1 Noark Supplementary Protectors, B1E UL 1077, 1P, B Curve, 1A, 5 kA, 277 Vac / 60 Vdc

    B1E1B1

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, B Curve, 1A, 5 kA, 277 Vac / 60 Vdc
  • B1E1B1.6 Noark Supplementary Protectors, B1E UL 1077, 1P, B Curve, 1.6A, 5 kA, 277 Vac / 60 Vdc

    B1E1B1.6

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, B Curve, 1.6A, 5 kA, 277 Vac / 60 Vdc
  • B1E1B10 Noark Supplementary Protectors, B1E UL 1077, 1P, B Curve, 10A, 5 kA, 277 Vac / 60 Vdc

    B1E1B10

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, B Curve, 10A, 5 kA, 277 Vac / 60 Vdc
  • B1E1B13 Noark Supplementary Protectors, B1E UL 1077, 1P, B Curve, 13A, 5 kA, 277 Vac / 60 Vdc

    B1E1B13

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, B Curve, 13A, 5 kA, 277 Vac / 60 Vdc
  • B1E1B15 Noark Supplementary Protectors, B1E UL 1077, 1P, B Curve, 15A, 5 kA, 277 Vac / 60 Vdc

    B1E1B15

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, B Curve, 15A, 5 kA, 277 Vac / 60 Vdc
  • B1E1B16 Noark Supplementary Protectors, B1E UL 1077, 1P, B Curve, 16A, 5 kA, 277 Vac / 60 Vdc

    B1E1B16

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, B Curve, 16A, 5 kA, 277 Vac / 60 Vdc
  • B1E1B2 Noark Supplementary Protectors, B1E UL 1077, 1P, B Curve, 2A, 5 kA, 277 Vac / 60 Vdc

    B1E1B2

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, B Curve, 2A, 5 kA, 277 Vac / 60 Vdc
  • B1E1B20 Noark Supplementary Protectors, B1E UL 1077, 1P, B Curve, 20A, 5 kA, 277 Vac / 60 Vdc

    B1E1B20

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, B Curve, 20A, 5 kA, 277 Vac / 60 Vdc
  • B1E1B25 Noark Supplementary Protectors, B1E UL 1077, 1P, B Curve, 25A, 5 kA, 277 Vac / 60 Vdc

    B1E1B25

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, B Curve, 25A, 5 kA, 277 Vac / 60 Vdc
  • B1E1B3 Noark Supplementary Protectors, B1E UL 1077, 1P, B Curve, 3A, 5 kA, 277 Vac / 60 Vdc

    B1E1B3

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, B Curve, 3A, 5 kA, 277 Vac / 60 Vdc
  • B1E1B30 Noark Supplementary Protectors, B1E UL 1077, 1P, B Curve, 30A, 5 kA, 277 Vac / 60 Vdc

    B1E1B30

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, B Curve, 30A, 5 kA, 277 Vac / 60 Vdc
  • B1E1B32 Noark Supplementary Protectors, B1E UL 1077, 1P, B Curve, 32A, 5 kA, 277 Vac / 60 Vdc

    B1E1B32

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, B Curve, 32A, 5 kA, 277 Vac / 60 Vdc
  • B1E1B35 Noark Supplementary Protectors, B1E UL 1077, 1P, B Curve, 35A, 5 kA, 277 Vac / 60 Vdc

    B1E1B35

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, B Curve, 35A, 5 kA, 277 Vac / 60 Vdc
  • B1E1B4 Noark Supplementary Protectors, B1E UL 1077, 1P, B Curve, 4A, 5 kA, 277 Vac / 60 Vdc

    B1E1B4

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, B Curve, 4A, 5 kA, 277 Vac / 60 Vdc
  • B1E1B40 Noark Supplementary Protectors, B1E UL 1077, 1P, B Curve, 40A, 5 kA, 277 Vac / 60 Vdc

    B1E1B40

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, B Curve, 40A, 5 kA, 277 Vac / 60 Vdc
  • B1E1B5 Noark Supplementary Protectors, B1E UL 1077, 1P, B Curve, 5A, 5 kA, 277 Vac / 60 Vdc

    B1E1B5

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, B Curve, 5A, 5 kA, 277 Vac / 60 Vdc
  • B1E1B50 Noark Supplementary Protectors, B1E UL 1077, 1P, B Curve, 50A, 5 kA, 277 Vac / 60 Vdc

    B1E1B50

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, B Curve, 50A, 5 kA, 277 Vac / 60 Vdc
  • B1E1B6 Noark Supplementary Protectors, B1E UL 1077, 1P, B Curve, 6A, 5 kA, 277 Vac / 60 Vdc

    B1E1B6

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, B Curve, 6A, 5 kA, 277 Vac / 60 Vdc
  • B1E1B60 Noark Supplementary Protectors, B1E UL 1077, 1P, B Curve, 60A, 5 kA, 277 Vac / 60 Vdc

    B1E1B60

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, B Curve, 60A, 5 kA, 277 Vac / 60 Vdc
  • B1E1B63 Noark Supplementary Protectors, B1E UL 1077, 1P, B Curve, 63A, 5 kA, 277 Vac / 60 Vdc

    B1E1B63

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, B Curve, 63A, 5 kA, 277 Vac / 60 Vdc
  • B1E1B8 Noark Supplementary Protectors, B1E UL 1077, 1P, B Curve, 8A, 5 kA, 277 Vac / 60 Vdc

    B1E1B8

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, B Curve, 8A, 5 kA, 277 Vac / 60 Vdc
  • B1E1C1 Noark Supplementary Protectors, B1E UL 1077, 1P, C Curve, 1A, 5 kA, 277 Vac / 60 Vdc

    B1E1C1

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, C Curve, 1A, 5 kA, 277 Vac / 60 Vdc
  • B1E1C1.6 Noark Supplementary Protectors, B1E UL 1077, 1P, C Curve, 1.6A, 5 kA, 277 Vac / 60 Vdc

    B1E1C1.6

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, C Curve, 1.6A, 5 kA, 277 Vac / 60 Vdc
  • B1E1C10 Noark Supplementary Protectors, B1E UL 1077, 1P, C Curve, 10A, 5 kA, 277 Vac / 60 Vdc

    B1E1C10

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, C Curve, 10A, 5 kA, 277 Vac / 60 Vdc
  • B1E1C13 Noark Supplementary Protectors, B1E UL 1077, 1P, C Curve, 13A, 5 kA, 277 Vac / 60 Vdc

    B1E1C13

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, C Curve, 13A, 5 kA, 277 Vac / 60 Vdc
  • B1E1C15 Noark Supplementary Protectors, B1E UL 1077, 1P, C Curve, 15A, 5 kA, 277 Vac / 60 Vdc

    B1E1C15

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, C Curve, 15A, 5 kA, 277 Vac / 60 Vdc
  • B1E1C16 Noark Supplementary Protectors, B1E UL 1077, 1P, C Curve, 16A, 5 kA, 277 Vac / 60 Vdc

    B1E1C16

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, C Curve, 16A, 5 kA, 277 Vac / 60 Vdc
  • B1E1C2 Noark Supplementary Protectors, B1E UL 1077, 1P, C Curve, 2A, 5 kA, 277 Vac / 60 Vdc

    B1E1C2

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, C Curve, 2A, 5 kA, 277 Vac / 60 Vdc
  • B1E1C20 Noark Supplementary Protectors, B1E UL 1077, 1P, C Curve, 20A, 5 kA, 277 Vac / 60 Vdc

    B1E1C20

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, C Curve, 20A, 5 kA, 277 Vac / 60 Vdc
  • B1E1C25 Noark Supplementary Protectors, B1E UL 1077, 1P, C Curve, 25A, 5 kA, 277 Vac / 60 Vdc

    B1E1C25

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, C Curve, 25A, 5 kA, 277 Vac / 60 Vdc
  • B1E1C3 Noark Supplementary Protectors, B1E UL 1077, 1P, C Curve, 3A, 5 kA, 277 Vac / 60 Vdc

    B1E1C3

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, C Curve, 3A, 5 kA, 277 Vac / 60 Vdc
  • B1E1C30 Noark Supplementary Protectors, B1E UL 1077, 1P, C Curve, 30A, 5 kA, 277 Vac / 60 Vdc

    B1E1C30

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, C Curve, 30A, 5 kA, 277 Vac / 60 Vdc
  • B1E1C32 Noark Supplementary Protectors, B1E UL 1077, 1P, C Curve, 32A, 5 kA, 277 Vac / 60 Vdc

    B1E1C32

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, C Curve, 32A, 5 kA, 277 Vac / 60 Vdc
  • B1E1C35 Noark Supplementary Protectors, B1E UL 1077, 1P, C Curve, 35A, 5 kA, 277 Vac / 60 Vdc

    B1E1C35

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, C Curve, 35A, 5 kA, 277 Vac / 60 Vdc
  • B1E1C4 Noark Supplementary Protectors, B1E UL 1077, 1P, C Curve, 4A, 5 kA, 277 Vac / 60 Vdc

    B1E1C4

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, C Curve, 4A, 5 kA, 277 Vac / 60 Vdc
  • B1E1C40 Noark Supplementary Protectors, B1E UL 1077, 1P, C Curve, 40A, 5 kA, 277 Vac / 60 Vdc

    B1E1C40

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, C Curve, 40A, 5 kA, 277 Vac / 60 Vdc
  • B1E1C5 Noark Supplementary Protectors, B1E UL 1077, 1P, C Curve, 5A, 5 kA, 277 Vac / 60 Vdc

    B1E1C5

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, C Curve, 5A, 5 kA, 277 Vac / 60 Vdc
  • B1E1C50 Noark Supplementary Protectors, B1E UL 1077, 1P, C Curve, 50A, 5 kA, 277 Vac / 60 Vdc

    B1E1C50

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, C Curve, 50A, 5 kA, 277 Vac / 60 Vdc
  • B1E1C6 Noark Supplementary Protectors, B1E UL 1077, 1P, C Curve, 6A, 5 kA, 277 Vac / 60 Vdc

    B1E1C6

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, C Curve, 6A, 5 kA, 277 Vac / 60 Vdc
  • B1E1C60 Noark Supplementary Protectors, B1E UL 1077, 1P, C Curve, 60A, 5 kA, 277 Vac / 60 Vdc

    B1E1C60

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, C Curve, 60A, 5 kA, 277 Vac / 60 Vdc
  • B1E1C63 Noark Supplementary Protectors, B1E UL 1077, 1P, C Curve, 63A, 5 kA, 277 Vac / 60 Vdc

    B1E1C63

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, C Curve, 63A, 5 kA, 277 Vac / 60 Vdc
  • B1E1C8 Noark Supplementary Protectors, B1E UL 1077, 1P, C Curve, 8A, 5 kA, 277 Vac / 60 Vdc

    B1E1C8

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, C Curve, 8A, 5 kA, 277 Vac / 60 Vdc
  • B1E1D1 Noark Supplementary Protectors, B1E UL 1077, 1P, D Curve, 1A, 5 kA, 277 Vac / 60 Vdc

    B1E1D1

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, D Curve, 1A, 5 kA, 277 Vac / 60 Vdc
  • B1E1D1.6 Noark Supplementary Protectors, B1E UL 1077, 1P, D Curve, 1.6A, 5 kA, 277 Vac / 60 Vdc

    B1E1D1.6

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, D Curve, 1.6A, 5 kA, 277 Vac / 60 Vdc
  • B1E1D10 Noark Supplementary Protectors, B1E UL 1077, 1P, D Curve, 10A, 5 kA, 277 Vac / 60 Vdc

    B1E1D10

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, D Curve, 10A, 5 kA, 277 Vac / 60 Vdc
  • B1E1D13 Noark Supplementary Protectors, B1E UL 1077, 1P, D Curve, 13A, 5 kA, 277 Vac / 60 Vdc

    B1E1D13

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, D Curve, 13A, 5 kA, 277 Vac / 60 Vdc
  • B1E1D15 Noark Supplementary Protectors, B1E UL 1077, 1P, D Curve, 15A, 5 kA, 277 Vac / 60 Vdc

    B1E1D15

    $12.62
    $14.02
    Supplementary Protectors, B1E UL 1077, 1P, D Curve, 15A, 5 kA, 277 Vac / 60 Vdc