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.

  • B1E4D1.6 Noark Supplementary Protectors, B1E UL 1077, 4P, D Curve, 1.6A, 5 kA, 480 Vac

    B1E4D1.6

    $50.65
    $56.28
    Supplementary Protectors, B1E UL 1077, 4P, D Curve, 1.6A, 5 kA, 480 Vac
  • B1E4D10 Noark Supplementary Protectors, B1E UL 1077, 4P, D Curve, 10A, 5 kA, 480 Vac

    B1E4D10

    $50.65
    $56.28
    Supplementary Protectors, B1E UL 1077, 4P, D Curve, 10A, 5 kA, 480 Vac
  • B1E4D13 Noark Supplementary Protectors, B1E UL 1077, 4P, D Curve, 13A, 5 kA, 480 Vac

    B1E4D13

    $50.65
    $56.28
    Supplementary Protectors, B1E UL 1077, 4P, D Curve, 13A, 5 kA, 480 Vac
  • B1E4D15 Noark Supplementary Protectors, B1E UL 1077, 4P, D Curve, 15A, 5 kA, 480 Vac

    B1E4D15

    $50.65
    $56.28
    Supplementary Protectors, B1E UL 1077, 4P, D Curve, 15A, 5 kA, 480 Vac
  • B1E4D16 Noark Supplementary Protectors, B1E UL 1077, 4P, D Curve, 16A, 5 kA, 480 Vac

    B1E4D16

    $50.65
    $56.28
    Supplementary Protectors, B1E UL 1077, 4P, D Curve, 16A, 5 kA, 480 Vac
  • B1E4D2 Noark Supplementary Protectors, B1E UL 1077, 4P, D Curve, 2A, 5 kA, 480 Vac

    B1E4D2

    $50.65
    $56.28
    Supplementary Protectors, B1E UL 1077, 4P, D Curve, 2A, 5 kA, 480 Vac
  • B1E4D20 Noark Supplementary Protectors, B1E UL 1077, 4P, D Curve, 20A, 5 kA, 480 Vac

    B1E4D20

    $50.65
    $56.28
    Supplementary Protectors, B1E UL 1077, 4P, D Curve, 20A, 5 kA, 480 Vac
  • B1E4D25 Noark Supplementary Protectors, B1E UL 1077, 4P, D Curve, 25A, 5 kA, 480 Vac

    B1E4D25

    $50.65
    $56.28
    Supplementary Protectors, B1E UL 1077, 4P, D Curve, 25A, 5 kA, 480 Vac
  • B1E4D3 Noark Supplementary Protectors, B1E UL 1077, 4P, D Curve, 3A, 5 kA, 480 Vac

    B1E4D3

    $50.65
    $56.28
    Supplementary Protectors, B1E UL 1077, 4P, D Curve, 3A, 5 kA, 480 Vac
  • B1E4D30 Noark Supplementary Protectors, B1E UL 1077, 4P, D Curve, 30A, 5 kA, 480 Vac

    B1E4D30

    $50.65
    $56.28
    Supplementary Protectors, B1E UL 1077, 4P, D Curve, 30A, 5 kA, 480 Vac
  • B1E4D32 Noark Supplementary Protectors, B1E UL 1077, 4P, D Curve, 32A, 5 kA, 480 Vac

    B1E4D32

    $50.65
    $56.28
    Supplementary Protectors, B1E UL 1077, 4P, D Curve, 32A, 5 kA, 480 Vac
  • B1E4D35 Noark Supplementary Protectors, B1E UL 1077, 4P, D Curve, 35A, 5 kA, 480 Vac

    B1E4D35

    $50.65
    $56.28
    Supplementary Protectors, B1E UL 1077, 4P, D Curve, 35A, 5 kA, 480 Vac
  • B1E4D4 Noark Supplementary Protectors, B1E UL 1077, 4P, D Curve, 4A, 5 kA, 480 Vac

    B1E4D4

    $50.65
    $56.28
    Supplementary Protectors, B1E UL 1077, 4P, D Curve, 4A, 5 kA, 480 Vac
  • B1E4D40 Noark Supplementary Protectors, B1E UL 1077, 4P, D Curve, 40A, 5 kA, 480 Vac

    B1E4D40

    $50.65
    $56.28
    Supplementary Protectors, B1E UL 1077, 4P, D Curve, 40A, 5 kA, 480 Vac
  • B1E4D5 Noark Supplementary Protectors, B1E UL 1077, 4P, D Curve, 5A, 5 kA, 480 Vac

    B1E4D5

    $50.65
    $56.28
    Supplementary Protectors, B1E UL 1077, 4P, D Curve, 5A, 5 kA, 480 Vac
  • B1E4D50 Noark Supplementary Protectors, B1E UL 1077, 4P, D Curve, 50A, 5 kA, 480 Vac

    B1E4D50

    $50.65
    $56.28
    Supplementary Protectors, B1E UL 1077, 4P, D Curve, 50A, 5 kA, 480 Vac
  • B1E4D6 Noark Supplementary Protectors, B1E UL 1077, 4P, D Curve, 6A, 5 kA, 480 Vac

    B1E4D6

    $50.65
    $56.28
    Supplementary Protectors, B1E UL 1077, 4P, D Curve, 6A, 5 kA, 480 Vac
  • B1E4D60 Noark Supplementary Protectors, B1E UL 1077, 4P, D Curve, 60A, 5 kA, 480 Vac

    B1E4D60

    $50.65
    $56.28
    Supplementary Protectors, B1E UL 1077, 4P, D Curve, 60A, 5 kA, 480 Vac
  • B1E4D63 Noark Supplementary Protectors, B1E UL 1077, 4P, D Curve, 63A, 5 kA, 480 Vac

    B1E4D63

    $50.65
    $56.28
    Supplementary Protectors, B1E UL 1077, 4P, D Curve, 63A, 5 kA, 480 Vac
  • B1E4D8 Noark Supplementary Protectors, B1E UL 1077, 4P, D Curve, 8A, 5 kA, 480 Vac

    B1E4D8

    $50.65
    $56.28
    Supplementary Protectors, B1E UL 1077, 4P, D Curve, 8A, 5 kA, 480 Vac
  • B1E4P100 Noark Supplementary Protectors, B1E UL 1077, 4P, 100A, 5 kA, 480V/277 Vac

    B1E4P100

    $59.94
    $66.60
    Supplementary Protectors, B1E UL 1077, 4P, 100A, 5 kA, 480V/277 Vac
  • B1E4P125 Noark Supplementary Protectors, B1E UL 1077, 4P, 125A, 5 kA, 480V/277 Vac

    B1E4P125

    $59.94
    $66.60
    Supplementary Protectors, B1E UL 1077, 4P, 125A, 5 kA, 480V/277 Vac
  • B1E4P80 Noark Supplementary Protectors, B1E UL 1077, 4P, 80A, 5 kA, 480V/277 Vac

    B1E4P80

    $59.94
    $66.60
    Supplementary Protectors, B1E UL 1077, 4P, 80A, 5 kA, 480V/277 Vac
  • B1H1B0.5 Noark Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 0.5A, 10 kA, 277 Vac, Box Lug

    B1H1B0.5

    $19.92
    $22.13
    Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 0.5A, 10 kA, 277 Vac, Box Lug
  • B1H1B1 Noark Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 1A, 10 kA, 277 Vac, Box Lug

    B1H1B1

    $19.92
    $22.13
    Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 1A, 10 kA, 277 Vac, Box Lug
  • B1H1B1.6 Noark Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 1.6A, 10 kA, 277 Vac, Box Lug

    B1H1B1.6

    $19.92
    $22.13
    Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 1.6A, 10 kA, 277 Vac, Box Lug
  • B1H1B10 Noark Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 10A, 10 kA, 277 Vac, Box Lug

    B1H1B10

    $19.92
    $22.13
    Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 10A, 10 kA, 277 Vac, Box Lug
  • B1H1B13 Noark Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 13A, 10 kA, 277 Vac, Box Lug

    B1H1B13

    $19.92
    $22.13
    Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 13A, 10 kA, 277 Vac, Box Lug
  • B1H1B15 Noark Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 15A, 10 kA, 277 Vac, Box Lug

    B1H1B15

    $19.92
    $22.13
    Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 15A, 10 kA, 277 Vac, Box Lug
  • B1H1B16 Noark Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 16A, 10 kA, 277 Vac, Box Lug

    B1H1B16

    $19.92
    $22.13
    Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 16A, 10 kA, 277 Vac, Box Lug
  • B1H1B2 Noark Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 2A, 10 kA, 277 Vac, Box Lug

    B1H1B2

    $19.92
    $22.13
    Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 2A, 10 kA, 277 Vac, Box Lug
  • B1H1B20 Noark Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 20A, 10 kA, 277 Vac, Box Lug

    B1H1B20

    $19.92
    $22.13
    Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 20A, 10 kA, 277 Vac, Box Lug
  • B1H1B25 Noark Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 25A, 10 kA, 277 Vac, Box Lug

    B1H1B25

    $19.92
    $22.13
    Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 25A, 10 kA, 277 Vac, Box Lug
  • B1H1B30 Noark Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 30A, 10 kA, 277 Vac, Box Lug

    B1H1B30

    $19.92
    $22.13
    Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 30A, 10 kA, 277 Vac, Box Lug
  • B1H1B32 Noark Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 32A, 10 kA, 277 Vac, Box Lug

    B1H1B32

    $19.92
    $22.13
    Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 32A, 10 kA, 277 Vac, Box Lug
  • B1H1B4 Noark Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 4A, 10 kA, 277 Vac, Box Lug

    B1H1B4

    $19.92
    $22.13
    Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 4A, 10 kA, 277 Vac, Box Lug
  • B1H1B5 Noark Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 5A, 10 kA, 277 Vac, Box Lug

    B1H1B5

    $19.92
    $22.13
    Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 5A, 10 kA, 277 Vac, Box Lug
  • B1H1B6 Noark Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 6A, 10 kA, 277 Vac, Box Lug

    B1H1B6

    $19.92
    $22.13
    Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 6A, 10 kA, 277 Vac, Box Lug
  • B1H1B7 Noark Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 7A, 10 kA, 277 Vac, Box Lug

    B1H1B7

    $19.92
    $22.13
    Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 7A, 10 kA, 277 Vac, Box Lug
  • B1H1B8 Noark Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 8A, 10 kA, 277 Vac, Box Lug

    B1H1B8

    $19.92
    $22.13
    Miniature Circuit Breakers, B1H UL 489, 1P, B Curve, 8A, 10 kA, 277 Vac, Box Lug
  • B1H1C0.5 Noark Miniature Circuit Breakers, B1H UL 489, 1P, C Curve, 0.5A, 10 kA, 277 Vac, Box Lug

    B1H1C0.5

    $20.94
    $23.27
    Miniature Circuit Breakers, B1H UL 489, 1P, C Curve, 0.5A, 10 kA, 277 Vac, Box Lug
  • B1H1C1 Noark Miniature Circuit Breakers, B1H UL 489, 1P, C Curve, 1A, 10 kA, 277 Vac, Box Lug

    B1H1C1

    $20.94
    $23.27
    Miniature Circuit Breakers, B1H UL 489, 1P, C Curve, 1A, 10 kA, 277 Vac, Box Lug
  • B1H1C1.6 Noark Miniature Circuit Breakers, B1H UL 489, 1P, C Curve, 1.6A, 10 kA, 277 Vac, Box Lug

    B1H1C1.6

    $20.94
    $23.27
    Miniature Circuit Breakers, B1H UL 489, 1P, C Curve, 1.6A, 10 kA, 277 Vac, Box Lug
  • B1H1C10 Noark Miniature Circuit Breakers, B1H UL 489, 1P, C Curve, 10A, 10 kA, 277 Vac, Box Lug

    B1H1C10

    $20.94
    $23.27
    Miniature Circuit Breakers, B1H UL 489, 1P, C Curve, 10A, 10 kA, 277 Vac, Box Lug
  • B1H1C13 Noark Miniature Circuit Breakers, B1H UL 489, 1P, C Curve, 13A, 10 kA, 277 Vac, Box Lug

    B1H1C13

    $20.94
    $23.27
    Miniature Circuit Breakers, B1H UL 489, 1P, C Curve, 13A, 10 kA, 277 Vac, Box Lug
  • B1H1C15 Noark Miniature Circuit Breakers, B1H UL 489, 1P, C Curve, 15A, 10 kA, 277 Vac, Box Lug

    B1H1C15

    $20.94
    $23.27
    Miniature Circuit Breakers, B1H UL 489, 1P, C Curve, 15A, 10 kA, 277 Vac, Box Lug
  • B1H1C16 Noark Miniature Circuit Breakers, B1H UL 489, 1P, C Curve, 16A, 10 kA, 277 Vac, Box Lug

    B1H1C16

    $20.94
    $23.27
    Miniature Circuit Breakers, B1H UL 489, 1P, C Curve, 16A, 10 kA, 277 Vac, Box Lug
  • B1H1C2 Noark Miniature Circuit Breakers, B1H UL 489, 1P, C Curve, 2A, 10 kA, 277 Vac, Box Lug

    B1H1C2

    $20.94
    $23.27
    Miniature Circuit Breakers, B1H UL 489, 1P, C Curve, 2A, 10 kA, 277 Vac, Box Lug