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.

  • E3R-4BM4H400T3L Noark Enclosed Breaker, Type 3R, 3P-4W, 2 Hole NT, M4, 400A, 100kA@480V

    E3R-4BM4H400T3L

    $4,349.27
    $4,832.52
    Enclosed Breaker, Type 3R, 3P-4W, 2 Hole NT, M4, 400A, 100kA@480V
  • E3R-4BM4H500T3L Noark Enclosed Breaker, Type 3R, 3P-4W, 100% Neutral, M4, 500A, 100kA@480V

    E3R-4BM4H500T3L

    $4,349.27
    $4,832.52
    Enclosed Breaker, Type 3R, 3P-4W, 100% Neutral, M4, 500A, 100kA@480V
  • E3R-4BM4H600T3L Noark Enclosed Breaker, Type 3R, 3P-4W, 100% Neutral, M4, 600A, 100kA@480V

    E3R-4BM4H600T3L

    $4,349.53
    $4,832.81
    Enclosed Breaker, Type 3R, 3P-4W, 100% Neutral, M4, 600A, 100kA@480V
  • E3R-4BM4N400T3L Noark Enclosed Breaker, Type 3R, 3P-4W, 100% Neutral, M4, 400A, 65kA@480V

    E3R-4BM4N400T3L

    $3,676.70
    $4,085.22
    Enclosed Breaker, Type 3R, 3P-4W, 100% Neutral, M4, 400A, 65kA@480V
  • E3R-4BM4N500T3L Noark Enclosed Breaker, Type 3R, 3P-4W, 100% Neutral, M4, 500A, 65kA@480V

    E3R-4BM4N500T3L

    $3,676.70
    $4,085.22
    Enclosed Breaker, Type 3R, 3P-4W, 100% Neutral, M4, 500A, 65kA@480V
  • E3R-4BM4N600T3L Noark Enclosed Breaker, Type 3R, 3P-4W, 100% Neutral, M4, 600A, 65kA@480V

    E3R-4BM4N600T3L

    $3,676.70
    $4,085.22
    Enclosed Breaker, Type 3R, 3P-4W, 100% Neutral, M4, 600A, 65kA@480V
  • E3R-4BM4S400T3L Noark Enclosed Breaker, Type 3R, 3P-4W, 100% Neutral, M4, 400A, 42kA@480V

    E3R-4BM4S400T3L

    $3,496.46
    $3,884.96
    Enclosed Breaker, Type 3R, 3P-4W, 100% Neutral, M4, 400A, 42kA@480V
  • E3R-4BM4S500T3L Noark Enclosed Breaker, Type 3R, 3P-4W, 100% Neutral, M4, 500A, 42kA@480V

    E3R-4BM4S500T3L

    $3,496.46
    $3,884.96
    Enclosed Breaker, Type 3R, 3P-4W, 100% Neutral, M4, 500A, 42kA@480V
  • E3R-4BM4S600T3L Noark Enclosed Breaker, Type 3R, 3P-4W, 100% Neutral, M4, 600A, 42kA@480V

    E3R-4BM4S600T3L

    $3,496.46
    $3,884.96
    Enclosed Breaker, Type 3R, 3P-4W, 100% Neutral, M4, 600A, 42kA@480V
  • E3R-XNM1H100T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M1, 100A, 100kA@480V

    E3R-XNM1H100T3L

    $966.29
    $1,073.65
    Enclosed Breaker, Type 3R, 3P-3W, M1, 100A, 100kA@480V
  • E3R-XNM1H150T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M1, 150A, 100kA@480V

    E3R-XNM1H150T3L

    $1,142.52
    $1,269.47
    Enclosed Breaker, Type 3R, 3P-3W, M1, 150A, 100kA@480V
  • E3R-XNM1H30T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M1, 30A, 100kA@480V

    E3R-XNM1H30T3L

    $966.29
    $1,073.65
    Enclosed Breaker, Type 3R, 3P-3W, M1, 30A, 100kA@480V
  • E3R-XNM1H60T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M1, 60A, 100kA@480V

    E3R-XNM1H60T3L

    $966.29
    $1,073.65
    Enclosed Breaker, Type 3R, 3P-3W, M1, 60A, 100kA@480V
  • E3R-XNM1N150T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M1, 150A, 65kA@480V

    E3R-XNM1N150T3L

    $1,030.31
    $1,144.79
    Enclosed Breaker, Type 3R, 3P-3W, M1, 150A, 65kA@480V
  • E3R-XNM1N30T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M1, 30A, 65kA@480V

    E3R-XNM1N30T3L

    $879.32
    $977.02
    Enclosed Breaker, Type 3R, 3P-3W, M1, 30A, 65kA@480V
  • E3R-XNM1N60T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M1, 60A, 65kA@480V

    E3R-XNM1N60T3L

    $879.32
    $977.02
    Enclosed Breaker, Type 3R, 3P-3W, M1, 60A, 65kA@480V
  • E3R-XNM1S30T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M1, 30A, 35kA@480V

    E3R-XNM1S30T3L

    $850.00
    $944.44
    Enclosed Breaker, Type 3R, 3P-3W, M1, 30A, 35kA@480V
  • E3R-XNM1S60T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M1, 60A, 35kA@480V

    E3R-XNM1S60T3L

    $850.00
    $944.44
    Enclosed Breaker, Type 3R, 3P-3W, M1, 60A, 35kA@480V
  • E3R-XNM2H175T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M2, 175A, 100kA@480V

    E3R-XNM2H175T3L

    $1,481.35
    $1,645.94
    Enclosed Breaker, Type 3R, 3P-3W, M2, 175A, 100kA@480V
  • E3R-XNM2H200T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M2, 200A, 100kA@480V

    E3R-XNM2H200T3L

    $1,481.35
    $1,645.94
    Enclosed Breaker, Type 3R, 3P-3W, M2, 200A, 100kA@480V
  • E3R-XNM2H225T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M2, 225A, 100kA@480V

    E3R-XNM2H225T3L

    $1,481.35
    $1,645.94
    Enclosed Breaker, Type 3R, 3P-3W, M2, 225A, 100kA@480V
  • E3R-XNM2H250T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M2, 250A, 100kA@480V

    E3R-XNM2H250T3L

    $1,653.01
    $1,836.68
    Enclosed Breaker, Type 3R, 3P-3W, M2, 250A, 100kA@480V
  • E3R-XNM2N175T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M2, 175A, 65kA@480V

    E3R-XNM2N175T3L

    $1,284.37
    $1,427.08
    Enclosed Breaker, Type 3R, 3P-3W, M2, 175A, 65kA@480V
  • E3R-XNM2N200T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M2, 200A, 65kA@480V

    E3R-XNM2N200T3L

    $1,284.37
    $1,427.08
    Enclosed Breaker, Type 3R, 3P-3W, M2, 200A, 65kA@480V
  • E3R-XNM2N225T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M2, 225A, 65kA@480V

    E3R-XNM2N225T3L

    $1,284.37
    $1,427.08
    Enclosed Breaker, Type 3R, 3P-3W, M2, 225A, 65kA@480V
  • E3R-XNM2N250T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M2, 250A, 65kA@480V

    E3R-XNM2N250T3L

    $1,448.44
    $1,609.38
    Enclosed Breaker, Type 3R, 3P-3W, M2, 250A, 65kA@480V
  • E3R-XNM2S175T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M2, 175A, 35kA@480V

    E3R-XNM2S175T3L

    $1,233.91
    $1,371.01
    Enclosed Breaker, Type 3R, 3P-3W, M2, 175A, 35kA@480V
  • E3R-XNM2S200T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M2, 200A, 35kA@480V

    E3R-XNM2S200T3L

    $1,233.91
    $1,371.01
    Enclosed Breaker, Type 3R, 3P-3W, M2, 200A, 35kA@480V
  • E3R-XNM2S225T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M2, 225A, 35kA@480V

    E3R-XNM2S225T3L

    $1,233.91
    $1,371.01
    Enclosed Breaker, Type 3R, 3P-3W, M2, 225A, 35kA@480V
  • E3R-XNM2S250T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M2, 250A, 35kA@480V

    E3R-XNM2S250T3L

    $1,326.76
    $1,474.18
    Enclosed Breaker, Type 3R, 3P-3W, M2, 250A, 35kA@480V
  • E3R-XNM3H300T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M3, 300A, 100kA@480V

    E3R-XNM3H300T3L

    $2,205.08
    $2,450.09
    Enclosed Breaker, Type 3R, 3P-3W, M3, 300A, 100kA@480V
  • E3R-XNM3H350T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M3, 350A, 100kA@480V

    E3R-XNM3H350T3L

    $2,205.08
    $2,450.09
    Enclosed Breaker, Type 3R, 3P-3W, M3, 350A, 100kA@480V
  • E3R-XNM3H400T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M3, 400A, 100kA@480V

    E3R-XNM3H400T3L

    $2,205.08
    $2,450.09
    Enclosed Breaker, Type 3R, 3P-3W, M3, 400A, 100kA@480V
  • E3R-XNM3N300T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M3, 300A, 65kA@480V

    E3R-XNM3N300T3L

    $1,914.70
    $2,127.44
    Enclosed Breaker, Type 3R, 3P-3W, M3, 300A, 65kA@480V
  • E3R-XNM3N350T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M3, 350A, 65kA@480V

    E3R-XNM3N350T3L

    $1,914.70
    $2,127.44
    Enclosed Breaker, Type 3R, 3P-3W, M3, 350A, 65kA@480V
  • E3R-XNM3N400T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M3, 400A, 65kA@480V

    E3R-XNM3N400T3L

    $1,915.34
    $2,128.15
    Enclosed Breaker, Type 3R, 3P-3W, M3, 400A, 65kA@480V
  • E3R-XNM3S300T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M3, 300A, 42kA@480V

    E3R-XNM3S300T3L

    $1,827.42
    $2,030.47
    Enclosed Breaker, Type 3R, 3P-3W, M3, 300A, 42kA@480V
  • E3R-XNM3S350T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M3, 350A, 42kA@480V

    E3R-XNM3S350T3L

    $1,827.42
    $2,030.47
    Enclosed Breaker, Type 3R, 3P-3W, M3, 350A, 42kA@480V
  • E3R-XNM3S400T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M3, 400A, 42kA@480V

    E3R-XNM3S400T3L

    $1,827.42
    $2,030.47
    Enclosed Breaker, Type 3R, 3P-3W, M3, 400A, 42kA@480V
  • E3R-XNM4H400T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M4, 400A, 100kA@480V

    E3R-XNM4H400T3L

    $4,061.27
    $4,512.52
    Enclosed Breaker, Type 3R, 3P-3W, M4, 400A, 100kA@480V
  • E3R-XNM4H500T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M4, 500A, 100kA@480V

    E3R-XNM4H500T3L

    $4,061.27
    $4,512.52
    Enclosed Breaker, Type 3R, 3P-3W, M4, 500A, 100kA@480V
  • E3R-XNM4H600T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M4, 600A, 100kA@480V

    E3R-XNM4H600T3L

    $4,061.53
    $4,512.81
    Enclosed Breaker, Type 3R, 3P-3W, M4, 600A, 100kA@480V
  • E3R-XNM4N400T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M4, 400A, 65kA@480V

    E3R-XNM4N400T3L

    $3,388.70
    $3,765.22
    Enclosed Breaker, Type 3R, 3P-3W, M4, 400A, 65kA@480V
  • E3R-XNM4N500T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M4, 500A, 65kA@480V

    E3R-XNM4N500T3L

    $3,388.70
    $3,765.22
    Enclosed Breaker, Type 3R, 3P-3W, M4, 500A, 65kA@480V
  • E3R-XNM4N600T3L Noark Enclosed Breaker, Type 3R, 3P-3W, M4, 600A, 65kA@480V

    E3R-XNM4N600T3L

    $3,388.70
    $3,765.22
    Enclosed Breaker, Type 3R, 3P-3W, M4, 600A, 65kA@480V