Circuit Breakers

Electrical Breaker Panel & Circuit Breaker Panels

Quality Switchgear sells and repairs electrical breaker panels of many types. If you need your circuit breaker components new, rebuilt, or refurbished, we can sell you the parts you need, when you need them. We understand how crucial circuit breaker panels can be and how time sensitive these parts are.

When a machine in a plant breaks down, you need reliable components that ship quickly. We are available for service 24 hours a day, seven days a week. Let us know how we can help and how fast you need your electrical breaker panel order, and we will make it happen.

  • MJA263005

    MJA263005

    Square D MJA263005 Molded Case Circuit Breaker. Family Powerpact; Type MJA; 600 Voltage; 2 Pole; 1 Phase; 300 Amp; 65kA@480V AIC; I-Line Style Plug-In Mounting.

    Amperage: 300
    Family: Powerpact
    Trip Functions: LI
    Frame: M Frame
    Poles: 2
    Voltage: 600
    AIC: 65kA@480V
    Mount Type: I-Line Style Plug-In
  • MJA263502

    MJA263502

    Square D MJA263502 Molded Case Circuit Breaker. Family Powerpact; Type MJA; 600 Voltage; 2 Pole; 1 Phase; 350 Amp; 65kA@480V AIC; I-Line Style Plug-In Mounting.

    Amperage: 350
    Family: Powerpact
    Trip Functions: LI
    Frame: M Frame
    Poles: 2
    Voltage: 600
    AIC: 65kA@480V
    Mount Type: I-Line Style Plug-In
  • MJA264002

    MJA264002

    Square D MJA264002 Molded Case Circuit Breaker. Family Powerpact; Type MJA; 600 Voltage; 2 Pole; 1 Phase; 400 Amp; 65kA@480V AIC; I-Line Style Plug-In Mounting.

    Amperage: 400
    Family: Powerpact
    Trip Functions: LI
    Frame: M Frame
    Poles: 2
    Voltage: 600
    AIC: 65kA@480V
    Mount Type: I-Line Style Plug-In
  • MJA264005

    MJA264005

    Square D MJA264005 Molded Case Circuit Breaker. Family Powerpact; Type MJA; 600 Voltage; 2 Pole; 1 Phase; 400 Amp; 65kA@480V AIC; I-Line Style Plug-In Mounting.

    Amperage: 400
    Family: Powerpact
    Trip Functions: LI
    Frame: M Frame
    Poles: 2
    Voltage: 600
    AIC: 65kA@480V
    Mount Type: I-Line Style Plug-In
  • MJA264505

    MJA264505

    Square D MJA264505 Molded Case Circuit Breaker. Family Powerpact; Type MJA; 600 Voltage; 2 Pole; 1 Phase; 450 Amp; 65kA@480V AIC; I-Line Style Plug-In Mounting.

    Amperage: 450
    Family: Powerpact
    Trip Functions: LI
    Frame: M Frame
    Poles: 2
    Voltage: 600
    AIC: 65kA@480V
    Mount Type: I-Line Style Plug-In
  • MJA265002

    MJA265002

    Square D MJA265002 Molded Case Circuit Breaker. Family Powerpact; Type MJA; 600 Voltage; 2 Pole; 1 Phase; 500 Amp; 65kA@480V AIC; I-Line Style Plug-In Mounting.

    Amperage: 500
    Family: Powerpact
    Trip Functions: LI
    Frame: M Frame
    Poles: 2
    Voltage: 600
    AIC: 65kA@480V
    Mount Type: I-Line Style Plug-In
  • MJA266002

    MJA266002

    Square D MJA266002 Molded Case Circuit Breaker. Family Powerpact; Type MJA; 600 Voltage; 2 Pole; 1 Phase; 600 Amp; 65kA@480V AIC; I-Line Style Plug-In Mounting.

    Amperage: 600
    Family: Powerpact
    Trip Functions: LI
    Frame: M Frame
    Poles: 2
    Voltage: 600
    AIC: 65kA@480V
    Mount Type: I-Line Style Plug-In
  • MJA268002

    MJA268002

    Square D MJA268002 Molded Case Circuit Breaker. Family Powerpact; Type MJA; 600 Voltage; 2 Pole; 1 Phase; 800 Amp; 65kA@480V AIC; I-Line Style Plug-In Mounting.

    Amperage: 800
    Family: Powerpact
    Trip Functions: LI
    Frame: M Frame
    Poles: 2
    Voltage: 600
    AIC: 65kA@480V
    Mount Type: I-Line Style Plug-In
  • MJA36300

    MJA36300

    Square D MJA36300 Molded Case Circuit Breaker. Family Powerpact; Type MJA; 600 Voltage; 3 Pole; 3 Phase; 300 Amp; 65kA@480V AIC; I-Line Style Plug-In Mounting.

    Amperage: 300
    Family: Powerpact
    Trip Functions: LI
    Frame: M Frame
    Poles: 3
    Voltage: 600
    AIC: 65kA@480V
    Mount Type: I-Line Style Plug-In
  • MJA36350

    MJA36350

    Square D MJA36350 Molded Case Circuit Breaker. Family Powerpact; Type MJA; 600 Voltage; 3 Pole; 3 Phase; 350 Amp; 65kA@480V AIC; I-Line Style Plug-In Mounting.

    Amperage: 350
    Family: Powerpact
    Trip Functions: LI
    Frame: M Frame
    Poles: 3
    Voltage: 600
    AIC: 65kA@480V
    Mount Type: I-Line Style Plug-In
    MSRP: $9,456.00
    $4,550.00
  • MJA36400

    MJA36400

    Square D MJA36400 Molded Case Circuit Breaker. Family Powerpact; Type MJA; 600 Voltage; 3 Pole; 3 Phase; 400 Amp; 65kA@480V AIC; I-Line Style Plug-In Mounting.

    Amperage: 400
    Family: Powerpact
    Trip Functions: LI
    Frame: M Frame
    Poles: 3
    Voltage: 600
    AIC: 65kA@480V
    Mount Type: I-Line Style Plug-In
    MSRP: $9,456.00
    $7,589.00
  • MJA36400YP

    MJA36400YP

    Square D MJA36400YP Molded Case Circuit Breaker. Family Powerpact; Type MJA; 600 Voltage; 3 Pole; 3 Phase; 400 Amp; 65kA@480V AIC; I-Line Style Plug-In Mounting.

    Amperage: 400
    Family: Powerpact
    Trip Functions: LI
    Frame: M Frame
    Poles: 3
    Voltage: 600
    AIC: 65kA@480V
    Mount Type: I-Line Style Plug-In