Circuit Breakers

Switching devices that automatically cut power in case of overloads or faults.
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  • Siemens MBKQJ1150 Panelboard Breaker Mounting Kit
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    Siemens MBKQJ1150 Panelboard Breaker Mounting Kit

    Mounting Kit for 240 V 150 A 10 kA 2-Pole QJ2/QR2 Panelboard Main Breaker

    Stock: 2
    Upgrade your hardware supply with surplus Siemens MBKQJ1150 Molded Case Breakers (MCCBs), a smart choice for any warehouse. This product delivers solid functionality and enduring performance. Because it is surplus, you get an exceptional value, making...
    $247.99
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  • Siemens JXD63B300L Molded Case Breakers (MCCBs)
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    Siemens JXD63B300L Molded Case Breakers (MCCBs)

    600 VAC, 500 VDC, 300 A at 40 Deg C, 35 kA at 480 VAC, 3-Pole, 3/0 AWG to 500 MCM Copper/4/0 AWG to 500 MCM Aluminum, Line/Load Lug Terminal, JD Frame, Thermal Magnetic Trip Unit, Non-Interchangeable Trip, Molded Case Circuit Breaker

    Stock: 1
    Upgrade your hardware supply with surplus Siemens JXD63B300L 300 Amp 3 Pole 600V Molded Case Breaker, a smart choice for any warehouse. This product delivers solid functionality and enduring performance. Because it is surplus, you get an exceptional...
    $1,371.87
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  • Siemens JXD22B400 Molded Case Breakers (MCCBs) Siemens JXD22B400 Molded Case Breakers (MCCBs)
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    Siemens JXD22B400 Molded Case Breakers (MCCBs)

    240 VAC, 250 VDC, 400 A at 40 Deg C, 65 kA, 2-Pole, JD Frame, Thermal Magnetic Trip Unit, Non-Interchangeable Trip, Molded Case Circuit Breaker

    Stock: 1
    Upgrade your hardware supply with surplus Siemens JXD22B400 400 Amp 2 Pole 240V Molded Case Breaker, a smart choice for any warehouse. This product delivers solid functionality and enduring performance. Because it is surplus, you get an exceptional...
    $1,326.00
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  • Siemens JD63T400 Interchangeable Molded Case Circuit Breaker Trip Unit (Repackaged)
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    Siemens JD63T400 Interchangeable Molded Case Circuit Breaker Trip Unit (Repackaged)

    600 VAC, 500 VDC, 400 A, 22/35 kA, 3-Pole, 3/0 AWG to 500 KCMIL Copper, 4/0 AWG to 500 KCMIL Aluminum, Line/Load Lug Terminal, JD Frame, Thermal Magnetic, Interchangeable Molded Case Circuit Breaker Trip Unit

    Stock: 7
    Upgrade your hardware supply with surplus Siemens JD63T400 Molded Case Breakers (MCCBs), a smart choice for any warehouse. This product delivers solid functionality and enduring performance. Because it is surplus, you get an exceptional value, making...
    $546.95
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  • Siemens JD63B200 Molded Case Breakers (MCCBs)
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    Siemens JD63B200 Molded Case Breakers (MCCBs)

    600 VAC, 500 VDC, 200 A at 40 Deg C, 35 kA at 480 VAC, 3-Pole, 3/0 AWG to 500 KCMIL Copper/4/0 AWG to 500 KCMIL Aluminum, Line/Load Lug Terminal, JD Frame, Thermal Magnetic Trip Unit, Interchangeable Trip, Molded Case Circuit Breaker

    Stock: 1
    Upgrade your hardware supply with surplus Siemens JD63B200 200 Amp 3 Pole 600V Molded Case Breaker, a smart choice for any warehouse. This product delivers solid functionality and enduring performance. Because it is surplus, you get an exceptional value,...
    $2,051.64
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  • Siemens HLD63F600 Molded Case Breakers (MCCBs)
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    Siemens HLD63F600 Molded Case Breakers (MCCBs)

    600 VAC, 500 VDC, 250 to 600 A, 35 kA, 3-Pole, Molded Case, Thermal Magnetic, LD Frame, Circuit Breaker Frame

    Stock: 1
    Upgrade your hardware supply with surplus Siemens HLD63F600 600 Amp 3 Pole 600V Molded Case Breaker, a smart choice for any warehouse. This product delivers solid functionality and enduring performance. Because it is surplus, you get an exceptional...
    $2,063.00
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  • Siemens HJXD63B300 Molded Case Breakers (MCCBs) Siemens HJXD63B300 Molded Case Breakers (MCCBs)
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    Siemens HJXD63B300 Molded Case Breakers (MCCBs)

    600 VAC, 300 A at 40 Deg C, 65 kA at 480 VAC, 3-Pole, JD Frame, Thermal Magnetic Trip Unit, Non-Interchangeable Trip, Molded Case Circuit Breaker

    Stock: 3
    Upgrade your hardware supply with surplus Siemens HJXD63B300 Molded Case Breakers (MCCBs), a smart choice for any warehouse. This product delivers solid functionality and enduring performance. Because it is surplus, you get an exceptional value, making...
    $2,185.19
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  • Siemens HHED63B050 Molded Case Circuit Breaker
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    Siemens HHED63B050 Molded Case Circuit Breaker

    600 VAC, 50 A at 40 Deg C, 65 kA at 480 VAC, 3-Pole, 10 to 1/0 AWG Copper/Aluminum, Load Lug Terminal, ED Frame, Fuseless, Current Limiting, Thermal Magnetic Trip Unit, Molded Case Circuit Breaker

    Stock: 1
    Upgrade your hardware supply with surplus Siemens HHED63B050 Molded Case Breakers (MCCBs), a smart choice for any warehouse. This product delivers solid functionality and enduring performance. Because it is surplus, you get an exceptional value, making...
    $926.25
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  • Siemens HED43B090 Molded Case Circuit Breaker
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    Siemens HED43B090 Molded Case Circuit Breaker

    480 VAC, 90 A at 40 Deg C, 42 kA, 3-Pole, 10 to 1/0 AWG Copper/Aluminum, Load Lug Terminal, ED Frame, Thermal Magnetic Trip Unit, Molded Case Circuit Breaker

    Stock: 4
    Upgrade your hardware supply with surplus Siemens HED43B090 Molded Case Breakers (MCCBs), a smart choice for any warehouse. This product delivers solid functionality and enduring performance. Because it is surplus, you get an exceptional value, making...
    $614.25
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