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    64 Products

    Square D Load-Center Circuit Breakers

    Match these circuit breakers to Square D breaker boxes or panel boards of the same manufacturer series. Because they are thermal-magnetic, these breakers trip two different ways. They either trip when heat is generated by sustained low-level overload current or quickly when the magnetic coil senses a high-current short circuit.
    QO Series
    Image of Product. QO Series, 1 Pole. Front orientation. Circuit Breakers. Square D Load-Center Circuit Breakers, QO Series, 1 Pole—Toggle-Switch Style.
    Image of Product. QO Series, 2 Poles. Front orientation. Circuit Breakers. Square D Load-Center Circuit Breakers, QO Series, 2 Poles—Toggle Switch.
    Image of Product. QO Series, 3 Poles. Front orientation. Circuit Breakers. Square D Load-Center Circuit Breakers, QO Series, 3 Poles—Toggle Switch.

    QO

    Series, 1

    Pole

    QO Series,

    2 Poles

    QO Series, 3

    Poles

    UL 489—They meet UL 489 requirements for branch circuit protection, so they protect downstream equipment and wiring from overloads and short circuits.
    Breakthrough Current @ Voltage—Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
    Current,
    A
    Voltage
    Freq., Hz
    Breakthrough Current @ Voltage
    Mounting
    Location
    Wire Connection
    Method
    Wd.
    Specs.
    Met
    Certification
    Each
    1 Pole—Toggle-Switch Style
    30120V AC
    240V AC
    50/6010,000 amp @ 120V AC
    10,000 amp @ 240V AC
    Breaker BoxSnap On3/4"UL 489UL Listed
    6782K12000000
     
    2 Poles—Toggle Switch
    3048V DC
    120V AC
    240V AC
    50/6010,000 amp @ 120V AC
    10,000 amp @ 240V AC
    5,000 amp @ 48V DC
    Breaker BoxSnap On1 1/2"UL 489UL Listed
    6782K21400000
     
    3 Poles—Toggle Switch
    3048V DC
    120V AC
    240V AC
    50/6010,000 amp @ 120V AC
    10,000 amp @ 240V AC
    5,000 amp @ 48V DC
    Breaker BoxSnap On2 1/4"UL 489UL Listed
    6782K308000000
     
    QO Series with 6 mA Ground Fault Sensitivity
    Image of Product. QO Series, 1 Pole. Front orientation. Circuit Breakers. Square D Load-Center Circuit Breakers, QO Series, 1 Pole—Toggle-Switch Style.
    Image of Product. QO Series, 2 Poles. Front orientation. Circuit Breakers. Square D Load-Center Circuit Breakers, QO Series, 2 Poles—Toggle Switch.

    QO

    Series, 1

    Pole

    QO Series,

    2 Poles

    Circuit breakers with ground fault sensitivity will trip if they detect a current leak above 6 mA. This minimizes the risk of electric shock to workers and equipment.
    UL 489—They meet UL 489 requirements for branch circuit protection, so they protect downstream equipment and wiring from overloads and short circuits.
    Breakthrough Current @ Voltage—Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
    Current,
    A
    Voltage, V AC
    Freq., Hz
    Breakthrough Current @ Voltage
    Mounting
    Location
    Wire Connection
    Method
    Wd.
    Specs.
    Met
    Certification
    Each
    1 Pole—Toggle-Switch Style
    3012050/6010,000 amp @ 120V ACBreaker BoxSnap On3/4"UL 489UL Listed
    6782K3030000000
     
    2 Poles—Toggle Switch
    30120
    240
    50/6010,000 amp @ 120V AC
    10,000 amp @ 240V AC
    Breaker BoxSnap On1.5"UL 489UL Listed
    6782K305000000
     
    QOB Series
    Image of Product. QOB Series, 1 Pole. Front orientation. Circuit Breakers. Square D Load-Center Circuit Breakers, QOB Series, 1 Pole—Toggle-Switch Style.
    Image of Product. QOB Series, 2 Poles. Front orientation. Circuit Breakers. Square D Load-Center Circuit Breakers, QOB Series, 2 Poles—Toggle Switch.
    Image of Product. QOB Series, 3 Poles. Front orientation. Circuit Breakers. Square D Load-Center Circuit Breakers, QOB Series, 3 Poles—Toggle Switch.

    QOB

    Series,

    1 Pole

    QOB

    Series, 2

    Poles

    QOB Series,

    3 Poles

    UL 489—They meet UL 489 requirements for branch circuit protection, so they protect downstream equipment and wiring from overloads and short circuits.
    Breakthrough Current @ Voltage—Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
    Current,
    A
    Voltage
    Freq., Hz
    Breakthrough Current @ Voltage
    Mounting
    Location
    Wire Connection
    Wd.
    Specs.
    Met
    Certification
    Each
    1 Pole—Toggle-Switch Style
    3048V DC
    120V AC
    240V AC
    50/6010,000 amp @ 120V AC
    10,000 amp @ 240V AC
    5,000 amp @ 48V DC
    Panel BoardScrew-Clamp Terminal3/4"UL 489UL Listed
    6782K513000000
     
    2 Poles—Toggle Switch
    3048V DC
    120V AC
    240V AC
    50/6010,000 amp @ 120V AC
    10,000 amp @ 240V AC
    5,000 amp @ 48V DC
    Panel BoardScrew-Clamp Terminal1 1/2"UL 489UL Listed
    6782K61300000
     
    3 Poles—Toggle Switch
    3048V DC
    120V AC
    240V AC
    50/6010,000 amp @ 120V AC
    10,000 amp @ 240V AC
    5,000 amp @ 48V DC
    Panel BoardScrew-Clamp Terminal2 1/4"UL 489UL Listed
    6782K713000000
     
    Homeline Series
    Image of Product. Homeline Series, 1 Pole. Front orientation. Circuit Breakers. Square D Load-Center Circuit Breakers, Homeline Series, 1 Pole—Toggle-Switch Style.
    Image of Product. Homeline Series, 3 Poles. Front orientation. Circuit Breakers. Square D Load-Center Circuit Breakers, Homeline Series, 2 Poles—Toggle Switch.

    Homeline

    Series, 1

    Pole

    Homeline

    Series, 3

    Poles

    UL 489—They meet UL 489 requirements for branch circuit protection, so they protect downstream equipment and wiring from overloads and short circuits.
    Breakthrough Current @ Voltage—Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
    Current,
    A
    Voltage, V AC
    Freq., Hz
    Breakthrough Current @ Voltage
    Mounting
    Location
    Wire Connection
    Method
    Wd.
    Specs.
    Met
    Certification
    Each
    1 Pole—Toggle-Switch Style
    30120
    240
    50/6010,000 amp @ 120V AC
    10,000 amp @ 240V AC
    Breaker BoxSnap On1"UL 489UL Listed
    69225K73000000
     
    2 Poles—Toggle Switch
    30120
    240
    50/6010,000 amp @ 120V AC
    10,000 amp @ 240V AC
    Breaker BoxSnap On2"UL 489UL Listed
    69225K7600000
     
    Homeline Series with 6 mA Ground Fault Sensitivity
    Image of Product. Homeline Series, 3 Poles. Front orientation. Circuit Breakers. Square D Load-Center Circuit Breakers, Homeline Series, 2 Poles—Toggle Switch.

    Homeline

    Series, 3

    Poles

    Circuit breakers with ground fault sensitivity will trip if they detect a current leak above 6 mA. This minimizes the risk of electric shock to workers and equipment.
    UL 489—They meet UL 489 requirements for branch circuit protection, so they protect downstream equipment and wiring from overloads and short circuits.
    Breakthrough Current @ Voltage—Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
    Current,
    A
    Voltage, V AC
    Freq., Hz
    Breakthrough Current @ Voltage
    Mounting
    Location
    Wire Connection
    Method
    Wd.
    Specs.
    Met
    Certification
    Each
    2 Poles—Toggle Switch
    30120
    240
    50/6010,000 amp @ 120V AC
    10,000 amp @ 240V AC
    Breaker BoxSnap On2"UL 489UL Listed
    69225K1050000000
     

    DIN-Rail Mount Branch Circuit Breakers

    Image of ProductInUse. Front orientation. Circuit Breakers. DIN-Rail Mount Branch Circuit Breakers.
    Image of Product. Extension Terminal. Front orientation. Circuit Breakers. DIN-Rail Mount Branch Circuit Breakers.
    Image of Product. Distribution Bar Terminal Cover. Front orientation. Circuit Breakers. DIN-Rail Mount Branch Circuit Breakers.
    Image of Product. Shunt Trip. Front orientation. Circuit Breakers. DIN-Rail Mount Branch Circuit Breakers.

    Extension

    Terminal

    Distribution

    Bar Terminal

    Cover

    Shunt

    Trip

    Image of Product. Auxiliary Contact. Front orientation. Circuit Breakers. DIN-Rail Mount Branch Circuit Breakers.
    Image of Product. Distribution Bar. Front orientation. Circuit Breakers. DIN-Rail Mount Branch Circuit Breakers.

    Auxiliary

    Contact

    Distribution Bar

    Distribution bar terminal covers shield unused, live terminals on distribution bars to prevent injury and damage.
    Auxiliary contacts send a signal to other equipment when the circuit trips. They can activate a warning light, initiate a shutdown, or start a backup power source.
    Shunt trips receive a signal from equipment to trip your circuit breaker in situations other than overload or short circuit conditions. For example, use them with a smoke detector to shut off power to a system in the event of a fire.
    Extension terminals raise the wire connection point above distribution bars for easy access to connect power to a set of circuit breakers.
    Mount these circuit breakers directly to DIN rail to protect equipment and wiring in an area of your facility from overloads and short circuits. Because they are thermal-magnetic, these breakers trip two ways. They either trip when heat is generated slowly by consistent low-level overload current, or they trip quickly when the magnetic coil senses a high-current short circuit.
    Distribution bars simplify wiring by powering multiple adjacent circuit breakers without needing separate wires for each one. This cuts down on assembly time and space.
    B Trip
    Image of Product. Front orientation. Circuit Breakers. DIN-Rail Mount Branch Circuit Breakers, 1 Pole—Toggle-Switch Style.
    Image of Product. Front orientation. Circuit Breakers. DIN-Rail Mount Branch Circuit Breakers, 2 Poles—Toggle-Switch Style.
    Image of Product. Front orientation. Circuit Breakers. DIN-Rail Mount Branch Circuit Breakers, 3 Poles—Toggle-Switch Style.

    1

    Pole—Toggle-Switch

    Style

    2

    Poles—Toggle-Switch

    Style

    3

    Poles—Toggle-Switch

    Style

    B-trip circuit breakers are best for protecting sensitive equipment, such as programmable logic controllers (PLCs) and sensors, which could be damaged by a spike in current. These circuit breakers will trip if a rush of current reaches 3 to 5 times their rated current.
    UL 489—They meet UL 489 requirements for branch circuit protection and are certified as current limiting, so they protect equipment by minimizing passing current during a short circuit.
    Voltage
    Freq., Hz
    For DIN
    Rail Size, mm
    Wire Connection
    Ht.
    Wd.
    Dp.
    Temp. Range,
    ° F
    Specs. Met
    Certification
    Current,
    A
    Each
    1 Pole—Toggle-Switch Style
    48V DC
    277V AC
    50/6035Screw-Clamp Terminal4.13"0.7"2.36"-10 to 165UL 489, IEC 60947-2CSA Certified, CE Marked
    305789T201000000
     
    2 Poles—Toggle-Switch Style
    96V DC
    277V AC
    480YV AC/277V AC
    50/6035Screw-Clamp Terminal4.13"1.4"2.36"-10 to 165UL 489, IEC 60947-2CSA Certified, CE Marked
    305789T20200000
     
    3 Poles—Toggle-Switch Style
    277V AC
    480YV AC/277V AC
    50/6035Screw-Clamp Terminal4.13"2.09"2.36"-10 to 165UL 489, IEC 60947-2CSA Certified, CE Marked
    305789T203000000
     
    Accessories for Circuit Breakers
    C Trip
    Image of Product. Front orientation. Circuit Breakers. DIN-Rail Mount Branch Circuit Breakers, 1 Pole—Toggle-Switch Style.
    Image of Product. Front orientation. Circuit Breakers. DIN-Rail Mount Branch Circuit Breakers, 2 Poles—Toggle-Switch Style.
    Image of Product. Front orientation. Circuit Breakers. DIN-Rail Mount Branch Circuit Breakers, 3 Poles—Toggle-Switch Style.

    1

    Pole—Toggle-Switch

    Style

    2

    Poles—Toggle-Switch

    Style

    3

    Poles—Toggle-Switch

    Style

    C-trip circuit breakers are the most common. They’re best for applications such as lighting and control panels, where equipment startup causes a moderate spike in current. They won’t trip until a rush of current reaches 5 to 10 times their rated current.
    UL 489—They meet UL 489 requirements for branch circuit protection and are certified as current limiting, so they protect equipment by minimizing passing current during a short circuit.
    Breakthrough Current @ Voltage—Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
    Voltage
    Freq., Hz
    Breakthrough Current @ Voltage
    For DIN
    Rail Size, mm
    Mounting
    Location
    Wire Connection
    Ht.
    Wd.
    Dp.
    Temp. Range,
    ° F
    Specs. Met
    Certification
    Current,
    A
    Each
    1 Pole—Toggle-Switch Style
     
    Thermal/Magnetic
    48V DC
    277V AC
    50/6010,000 amp @ 277V AC
    10,000 amp @ 48V DC
    35DIN RailScrew-Clamp Terminal4.13"0.7"2.36"-10 to 165UL 489, IEC 60947-2CSA Certified, CE Marked
    305789T75000000
     
    2 Poles—Toggle-Switch Style
     
    Thermal/Magnetic
    96V DC
    277V AC
    480YV AC/277V AC
    50/6010,000 amp @ 277V AC
    10,000 amp @ 480V AC
    10,000 amp @ 96V DC
    35DIN RailScrew-Clamp Terminal4.13"1.4"2.36"-10 to 165UL 489, IEC 60947-2CSA Certified, CE Marked
    305789T8500000
     
    3 Poles—Toggle-Switch Style
     
    Thermal/Magnetic
    277V AC
    480YV AC/277V AC
    50/6010,000 amp @ 277V AC
    10,000 amp @ 480V AC
    35DIN RailScrew-Clamp Terminal4.13"2.09"2.36"-10 to 165UL 489, IEC 60947-2CSA Certified, CE Marked
    305789T95000000
     
    Accessories for Circuit Breakers
    D Trip
    Image of Product. Front orientation. Circuit Breakers. DIN-Rail Mount Branch Circuit Breakers, 1 Pole—Toggle-Switch Style.
    Image of Product. Front orientation. Circuit Breakers. DIN-Rail Mount Branch Circuit Breakers, 2 Poles—Toggle-Switch Style.
    Image of Product. Front orientation. Circuit Breakers. DIN-Rail Mount Branch Circuit Breakers, 3 Poles—Toggle-Switch Style.

    1

    Pole—Toggle-Switch

    Style

    2

    Poles—Toggle-Switch

    Style

    3

    Poles—Toggle-Switch

    Style

    D-trip circuit breakers prevent nuisance tripping, so they are best for equipment that has a high spike in current at startup, such as transformers, power supplies, and heaters. They will not trip unless a rush of current reaches 10 to 20 times their rated current.
    UL 489—They meet UL 489 requirements for branch circuit protection and are certified as current limiting, so they protect equipment by minimizing passing current during a short circuit.
    Breakthrough Current @ Voltage—Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
    Current,
    A
    Voltage
    Freq., Hz
    Breakthrough Current @ Voltage
    For DIN
    Rail Size, mm
    Mounting
    Location
    Wire Connection
    Ht.
    Wd.
    Dp.
    Temp. Range,
    ° F
    Specs. Met
    Certification
    Each
    1 Pole—Toggle-Switch Style
     
    Thermal/Magnetic
    3048V DC
    277V AC
    50/6010,000 amp @ 277V AC
    10,000 amp @ 48V DC
    35DIN RailScrew-Clamp Terminal4.13"0.7"2.36"-10 to 165UL 489, IEC 60947-2CSA Certified, CE Marked
    5789T417000000
     
    2 Poles—Toggle-Switch Style
     
    Thermal/Magnetic
    3096V DC
    277V AC
    480YV AC/277V AC
    50/6010,000 amp @ 277V AC
    10,000 amp @ 480V AC
    10,000 amp @ 96V DC
    35DIN RailScrew-Clamp Terminal4.13"1.4"2.36"-10 to 165UL 489, IEC 60947-2CSA Certified, CE Marked
    5789T51700000
     
    3 Poles—Toggle-Switch Style
     
    Thermal/Magnetic
    30277V AC
    480YV AC/277V AC
    50/6010,000 amp @ 277V AC
    10,000 amp @ 480V AC
    35DIN RailScrew-Clamp Terminal4.13"2.09"2.36"-10 to 165UL 489, IEC 60947-2CSA Certified, CE Marked
    5789T617000000
     
    Accessories for Circuit Breakers

    DIN-Rail Mount Equipment Circuit Breakers

    Image of ProductInUse. Front orientation. Circuit Breakers. DIN-Rail Mount Equipment Circuit Breakers.
    Image of Product. Auxiliary Contact. Front orientation. Circuit Breakers. DIN-Rail Mount Equipment Circuit Breakers.
    Image of Product. Distribution Bar. Front orientation. Circuit Breakers. DIN-Rail Mount Equipment Circuit Breakers.
    Image of Product. Distribution Bar Terminal Cover. Front orientation. Circuit Breakers. DIN-Rail Mount Equipment Circuit Breakers.

    Auxiliary

    Contact

    Distribution Bar

    Distribution Bar

    Terminal Cover

    Image of Product. Distribution Bar End Cover. Front orientation. Circuit Breakers. DIN-Rail Mount Equipment Circuit Breakers.
    Image of Product. Shunt Trip. Front orientation. Circuit Breakers. DIN-Rail Mount Equipment Circuit Breakers.
    Image of Product. Extension Terminal. Front orientation. Circuit Breakers. DIN-Rail Mount Equipment Circuit Breakers.

    Distribution

    Bar End Cover

    Shunt

    Trip

    Extension

    Terminal

    Distribution bars simplify wiring by powering multiple adjacent circuit breakers without needing separate wires for each one. This cuts down on assembly time and space. Cut them to the number of terminals that you need.
    Distribution bar terminal covers shield unused, live terminals on distribution bars to prevent injury and damage.
    Auxiliary contacts send a signal to other equipment when the circuit trips. They can activate a warning light, initiate a shutdown, or start a backup power source.
    Shunt trips receive a signal from equipment to trip your circuit breaker in situations other than overload or short circuit conditions. For example, use them with a smoke detector to shut off power to a system in the event of a fire.
    Extension terminals raise the wire connection point above distribution bars for easy access to connect power to a set of circuit breakers.
    Also known as supplemental protectors, these circuit breakers mount directly to DIN rail downstream from a branch circuit breaker to protect a single piece of equipment. Because they are thermal-magnetic, these breakers trip two ways. They either trip when heat is generated slowly by consistent low-level overload current, or they trip quickly when the magnetic coil senses a high-current short circuit.
    Distribution bar end covers seal the live ends of distribution bars to prevent injury and damage.
    B Trip
    Image of Product. Front orientation. Circuit Breakers. DIN-Rail Mount Equipment Circuit Breakers, 1 Pole—Toggle-Switch Style.
    Image of Product. Front orientation. Circuit Breakers. DIN-Rail Mount Equipment Circuit Breakers, 2 Poles—Toggle-Switch Style.
    Image of Product. Front orientation. Circuit Breakers. DIN-Rail Mount Equipment Circuit Breakers, 3 Poles—Toggle-Switch Style.

    1

    Pole—Toggle-Switch

    Style

    2

    Poles—Toggle-Switch

    Style

    3

    Poles—Toggle-Switch

    Style

    B-trip circuit breakers are best for protecting sensitive equipment, such as programmable logic controllers (PLCs) and sensors, which could be damaged by a spike in current. These circuit breakers will trip if a rush of current reaches 3 to 5 times their rated current.
    UL 1077—They are rated UL 1077 for protection against overloads and short circuits.
    Current,
    A
    Voltage
    Freq., Hz
    Breakthrough Current @ Voltage
    For DIN
    Rail Size, mm
    Mounting
    Location
    Wire Connection
    Ht.
    Wd.
    Dp.
    Temp. Range,
    ° F
    Specs. Met
    Certification
    Each
    1 Pole—Toggle-Switch Style
     
    Thermal/Magnetic
    3048V DC
    277V AC
    50/6010,000 amp @ 277V AC
    10,000 amp @ 48V DC
    35DIN RailScrew-Clamp Terminal3.15"0.7"2.36"-40 to 165UL 1077, IEC 60947-2UL Listed, CSA Certified, CE Marked
    7026K615000000
     
    2 Poles—Toggle-Switch Style
     
    Thermal/Magnetic
    3096V DC
    277V AC
    480YV AC/277V AC
    50/6010,000 amp @ 277V AC
    10,000 amp @ 480V AC
    10,000 amp @ 96V DC
    35DIN RailScrew-Clamp Terminal3.15"1.4"2.36"-40 to 165UL 1077, IEC 60947-2UL Listed, CSA Certified, CE Marked
    7026K621000000
     
    3 Poles—Toggle-Switch Style
     
    Thermal/Magnetic
    30277V AC
    480YV AC/277V AC
    50/6010,000 amp @ 277V AC
    10,000 amp @ 480V AC
    35DIN RailScrew-Clamp Terminal3.15"2.09"2.36"-40 to 165UL 1077, IEC 60947-2UL Listed, CSA Certified, CE Marked
    7026K627000000
     
    Accessories for Circuit Breakers
    C Trip
    Image of Product. Front orientation. Circuit Breakers. DIN-Rail Mount Equipment Circuit Breakers, 1 Pole—Toggle-Switch Style.
    Image of Product. Front orientation. Circuit Breakers. DIN-Rail Mount Equipment Circuit Breakers, 2 Poles—Toggle-Switch Style.
    Image of Product. Front orientation. Circuit Breakers. DIN-Rail Mount Equipment Circuit Breakers, 3 Poles—Toggle-Switch Style.

    1

    Pole—Toggle-Switch

    Style

    2

    Poles—Toggle-Switch

    Style

    3

    Poles—Toggle-Switch

    Style

    C-trip circuit breakers are the most common. They’re best for applications such as lighting and control panels, where equipment startup causes a moderate spike in current. They won’t trip until a rush of current reaches 5 to 10 times their rated current.
    UL 1077—They are rated UL 1077 for protection against overloads and short circuits.
    Current,
    A
    Voltage
    Freq., Hz
    Breakthrough Current @ Voltage
    For DIN
    Rail Size, mm
    Mounting
    Location
    Wire Connection
    Ht.
    Wd.
    Dp.
    Temp. Range,
    ° F
    Specs. Met
    Certification
    Each
    1 Pole—Toggle-Switch Style
     
    Thermal/Magnetic
    3048V DC
    277V AC
    50/6010,000 amp @ 277V AC
    10,000 amp @ 48V DC
    35DIN RailScrew-Clamp Terminal3.15"0.7"2.36"-40 to 165UL 1077, IEC 60947-2UL Listed, CSA Certified, CE Marked
    7026K69000000
     
    2 Poles—Toggle-Switch Style
     
    Thermal/Magnetic
    3096V DC
    277V AC
    480YV AC/277V AC
    50/6010,000 amp @ 277V AC
    10,000 amp @ 480V AC
    10,000 amp @ 96V DC
    35DIN RailScrew-Clamp Terminal3.15"1.4"2.36"-40 to 165UL 1077, IEC 60947-2UL Listed, CSA Certified, CE Marked
    7026K911000000
     
    3 Poles—Toggle-Switch Style
     
    Thermal/Magnetic
    30277V AC
    480YV AC/277V AC
    50/6010,000 amp @ 277V AC
    10,000 amp @ 480V AC
    35DIN RailScrew-Clamp Terminal3.15"2.09"2.36"-40 to 165UL 1077, IEC 60947-2UL Listed, CSA Certified, CE Marked
    7026K85000000
     
    Accessories for Circuit Breakers
    D Trip
    Image of Product. Front orientation. Circuit Breakers. DIN-Rail Mount Equipment Circuit Breakers, 1 Pole—Toggle-Switch Style.
    Image of Product. Front orientation. Circuit Breakers. DIN-Rail Mount Equipment Circuit Breakers, 2 Poles—Toggle-Switch Style.
    Image of Product. Front orientation. Circuit Breakers. DIN-Rail Mount Equipment Circuit Breakers, 3 Poles—Toggle-Switch Style.

    1

    Pole—Toggle-Switch

    Style

    2

    Poles—Toggle-Switch

    Style

    3

    Poles—Toggle-Switch

    Style

    D-trip circuit breakers prevent nuisance tripping, so they are best for equipment that has a high spike in current at startup, such as transformers, power supplies, and heaters. They will not trip unless a rush of current reaches 10 to 20 times their rated current.
    UL 1077—They are rated UL 1077 for protection against overloads and short circuits.
    Current,
    A
    Voltage
    Freq., Hz
    Breakthrough Current @ Voltage
    For DIN
    Rail Size, mm
    Mounting
    Location
    Wire Connection
    Ht.
    Wd.
    Dp.
    Temp. Range,
    ° F
    Specs. Met
    Certification
    Each
    1 Pole—Toggle-Switch Style
     
    Thermal/Magnetic
    3048V DC
    277V AC
    50/605,000 amp @ 277V AC
    5,000 amp @ 48V DC
    35DIN RailScrew-Clamp Terminal3.15"0.7"2.36"-40 to 165UL 1077, IEC 60947-2UL Listed, CSA Certified, CE Marked
    7026K654000000
     
    2 Poles—Toggle-Switch Style
     
    Thermal/Magnetic
    3096V DC
    277V AC
    480YV AC/277V AC
    50/605,000 amp @ 277V AC
    5,000 amp @ 480V AC
    5,000 amp @ 96V DC
    35DIN RailScrew-Clamp Terminal3.15"1.4"2.36"-40 to 165UL 1077, IEC 60947-2UL Listed, CSA Certified, CE Marked
    7026K661000000
     
    3 Poles—Toggle-Switch Style
     
    Thermal/Magnetic
    30277V AC
    480YV AC/277V AC
    50/605,000 amp @ 277V AC
    5,000 amp @ 480V AC
    35DIN RailScrew-Clamp Terminal3.15"2.09"2.36"-40 to 165UL 1077, IEC 60947-2UL Listed, CSA Certified, CE Marked
    7026K668000000
     
    Accessories for Circuit Breakers

    High-Power Circuit Breakers

    Image of Product. Shunt Trip. Front orientation. Circuit Breakers. High-Power Circuit Breakers.

    Shunt

    Trip

    Image of Product. Circuit Breaker. Front orientation. Circuit Breakers. High-Power Circuit Breakers.

    Circuit

    Breaker

    Image of Product. Undervoltage Trip. Front orientation. Circuit Breakers. High-Power Circuit Breakers.

    Undervoltage

    Trip

    Protect an area of a facility that has high-powered equipment. These circuit breakers are also known as molded case circuit breakers. Because these breakers are thermal-magnetic, they trip two ways. They either trip when heat is generated slowly by consistent low-level overload current, or they trip quickly when the magnetic coil senses a high-current short circuit. A switch lets you adjust when these breakers magnetically trip, so you don't need to replace them as your application changes. These breakers have internal accessory slots to fit shunt trips, auxiliary contacts, and undervoltage trips, saving space in your setup.
    Undervoltage trips protect equipment from operating with less than their intended voltage by tripping a circuit breaker when the supply voltage drops below a set level. 30 amp to 250 amp breakers can only have one shunt trip or undervoltage trip installed. 400 amp to 600 amp breakers can accommodate one shunt trip and one undervoltage trip at the same time.
    Shunt trips receive a signal from equipment to trip your circuit breaker in situations other than overload or short circuit conditions. For example, use them with a smoke detector to shut off power to a system in the event of a fire. 30 amp to 250 amp breakers can only have one shunt trip or undervoltage trip installed. 400 amp to 600 amp breakers can accommodate one shunt trip and one undervoltage trip at the same time.
    UL 489—They meet UL 489 requirements for branch circuit protection.
    Breakthrough Current @ Voltage—Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
    Mounting
    Holes
    Screw On
    Current,
    A
    Voltage
    Freq., Hz
    Breakthrough Current @ Voltage
    Inrush Current Setting, amp
    For DIN
    Rail Size, mm
    Mounting
    Location
    No.
    of
    Dia.
    Mounting Fasteners
    Included
    Wire
    Connection
    Ht.
    Wd.
    Dp.
    Temp. Range,
    ° F
    Specs. Met
    Certification
    Each
    3 Poles—Toggle-Switch Style
     
    Thermal/Magnetic
    30600V DC
    480V AC
    600YV AC/347V AC
    50/6065,000 amp @ 240V AC
    25,000 amp @ 480V AC
    14,000 amp @ 600V AC
    14,000 amp @ 125V DC
    50,000 amp @ 250V DC
    50,000 amp @ 500V DC
    50,000 amp @ 600V DC
    150, 180, 210, 240, 270, 30035DIN Rail411/64"YesTab5.5"3"3"-10 to 155UL 489, IEC 60947-2, IEC 81346-2UL Listed, CE Marked
    4434N110000000
     
    Accessories for Circuit Breakers

    Siemens Load-Center Circuit Breakers

    Image of Product. Front orientation. Circuit Breakers. Siemens Load-Center Circuit Breakers, 1 Pole—Toggle-Switch Style.
    Image of Product. Front orientation. Circuit Breakers. Siemens Load-Center Circuit Breakers, 2 Poles—Toggle-Switch Style.

    1

    Pole—Toggle-Switch

    Style

    2

    Poles—Toggle-Switch

    Style

    Use with Siemens EQ series breaker boxes. Because they are thermal-magnetic, these circuit breakers trip two different ways. They either trip when heat is generated slowly by consistent low-level overload current or quickly when the magnetic coil senses a high-current short circuit.
    UL 489—These circuit breakers meet UL 489 requirements for branch circuit protection, so they protect downstream equipment and wiring from overloads and short circuits.
    Breakthrough Current @ Voltage—Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
    Current,
    A
    Voltage, V AC
    Freq.,
    Hz
    Breakthrough Current @ Voltage
    Mounting
    Location
    Wire Connection
    Wd.
    Specs.
    Met
    Each
    1 Pole—Toggle-Switch Style
     
    Thermal/Magnetic
    30120
    240
    6010,000 amp @ 120V AC
    10,000 amp @ 240V AC
    Breaker BoxScrew-Clamp Terminal1"UL 4895259T43000000
     
    2 Poles—Toggle-Switch Style
     
    Thermal/Magnetic
    30120
    240
    6010,000 amp @ 120V AC
    10,000 amp @ 240V AC
    Breaker BoxScrew-Clamp Terminal2"UL 4895259T5300000
     

    Cutler-Hammer Load-Center Circuit Breakers

    Image of Product. Front orientation. Circuit Breakers. Cutler-Hammer Load-Center Circuit Breakers, 1 Pole—Toggle-Switch Style.
    Image of Product. Front orientation. Circuit Breakers. Cutler-Hammer Load-Center Circuit Breakers, 2 Poles—Toggle-Switch Style.

    1

    Pole—Toggle-Switch

    Style

    2

    Poles—Toggle-Switch

    Style

    Install these circuit breakers into Cutler-Hammer CH series breaker boxes. Because these circuit breakers are thermal-magnetic, they trip two different ways. They either trip when heat is generated slowly by consistent low-level overload current or quickly when the magnetic coil senses a high-current short circuit.
    UL 489—They meet UL 489 requirements for branch circuit protection and are certified as current limiting, so they protect equipment by minimizing passing current during a short circuit.
    Breakthrough Current @ Voltage—Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
    Current,
    A
    Voltage, V AC
    Freq.,
    Hz
    Breakthrough Current @ Voltage
    Mounting
    Location
    Wire Connection
    Wd.
    Specs.
    Met
    Each
    1 Pole—Toggle-Switch Style
     
    Thermal/Magnetic
    30120
    240
    6010,000 amp @ 120V AC
    10,000 amp @ 240V AC
    Breaker BoxScrew-Clamp Terminal3/4"UL 4895259T73000000
     
    2 Poles—Toggle-Switch Style
     
    Thermal/Magnetic
    30120
    240
    6010,000 amp @ 120V AC
    10,000 amp @ 240V AC
    Breaker BoxScrew-Clamp Terminal1 1/2"UL 4895259T8300000
     

    Harsh-Environment Circuit Breakers

    Image of Product. Front orientation. Circuit Breakers. Harsh-Environment Circuit Breakers, 1 Pole—Push-Pull-Button Style.
    Image of Product. Front orientation. Circuit Breakers. Harsh-Environment Circuit Breakers, 1 Pole—Lever Style.
    Image of Product. Front orientation. Circuit Breakers. Harsh-Environment Circuit Breakers, 1 Pole—Push-Button Style.

    1

    Pole—Push-Pull-Button

    Style

    1

    Pole—Lever

    Style

    1

    Pole—Push-Button

    Style

    Built to resist vibration and corrosion in harsh environments, these circuit breakers protect against overload and short circuits in low-voltage automotive and other electronic applications. All are thermal, so they use the heat generated in overcurrent situations to trip the breaker.
    Lever Manual Reset and Push-Pull Button Manual Reset—Push-pull button and lever style breakers can be used as an on/off switch.
    UL 1077—Place UL 1077-rated breakers downstream from a branch circuit breaker to protect a single piece of equipment. They are also known as supplemental protectors.
    Breakthrough Current @ Voltage—Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
    Mounting
    Holes
    Screw On
    Current,
    A
    Voltage,
    V DC
    Breakthrough Current
    @ Voltage
    For Panel
    Cutout Dia.
    Dp. Behind
    Panel
    Mounting
    Location
    No.
    of
    Dia.
    Mounting Fasteners
    Included
    Wire
    Connection
    Ht.
    Wd.
    Dp.
    Temp. Range,
    ° F
    Specs.
    Met
    Certification
    Each
    1 Pole—Push-Pull-Button Style
     
    Thermal
    30286,000 amp @ 28V DC0.49"2.48"PanelYesScrew Terminal-65 to 165UL 1077UL Recognized Component
    6608T11000000
     
    1 Pole—Lever Style
     
    Thermal
    30481,500 amp @ 48V DC30.19"NoScrew Terminal3.44"2.32"1.72"-40 to 185CE Marked
    4514K22200000
     
    1 Pole—Push-Button Style
     
    Thermal
    30481,500 amp @ 48V DC20.25"NoScrew Terminal2.89"1.9"1.44"-40 to 185CE Marked
    4514K13100000
     

    Blade-Style Circuit Breakers

    Protect against overload and short circuits in low-voltage automotive and other electronic applications. These circuit breakers can replace type ATC, AF, ATO, and 257 blade-style fuses. They are thermal, so they trip when heat is generated by overload current.
    Automatic Reset
    Image of Product. Front orientation. Circuit Breakers. Blade-Style Circuit Breakers, Automatic Reset.
    Automatic reset breakers don’t require you to manually reset them after they trip, so they’re good for areas where the breaker isn’t easily accessed. These breakers reset once they cool. However, they will trip repeatedly if the overcurrent condition continues.
    Breakthrough Current @ Voltage—Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
    Current,
    A
    Breakthrough Current
    @ Voltage
    Mounting
    Location
    Ht.
    Wd.
    Blade
    Ht.
    Temp. Range,
    ° F
    Enclosure
    Rating
    Specs.
    Met
    Each
    12V DC
    302,000 amp @ 12V DCFuse Block0.95"0.79"0.25"-40 to 185IP54
    SAE J5534212T1700000
     
    Manual Reset—Push-Button Style
    Image of Product. Front orientation. Circuit Breakers. Blade-Style Circuit Breakers, Manual Reset—Push-Button Style.
    Manual reset breakers require you to push a button after they trip.
    Breakthrough Current @ Voltage—Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
    Current,
    A
    Breakthrough Current
    @ Voltage
    Mounting
    Location
    Ht.
    Wd.
    Blade
    Ht.
    Temp. Range,
    ° F
    Enclosure
    Rating
    Each
    24V DC
    302,000 amp @ 24V DCFuse Block1.16"0.79"0.25"-40 to 185IP30
    4212T37000000
     

    High-Temperature Panel-Mount Circuit Breakers

    Image of Product. Front orientation. Circuit Breakers. High-Temperature Panel-Mount Circuit Breakers , 1 Pole—Toggle-Switch Style.

    1

    Pole—Toggle-Switch

    Style

    Unlike breakers that trip thermally, these breakers have a hydraulic-magnetic trip mechanism, so they aren’t affected by changes in temperature. Instead, these circuit breakers trip when they hydraulically sense consistent low-level overload current, or they trip quickly when the magnetic coil senses a high-current short circuit. Use the threaded holes on the face to install them through panels, enclosure covers, or walls to keep them close to the equipment they protect.
    Breakthrough Current @ Voltage—Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
    Mounting
    Holes
    Current,
    A
    Voltage
    Freq., Hz
    Breakthrough Current @ Voltage
    Temp. Range,
    ° F
    For Panel
    Cutout Dia.
    Dp. Behind
    Panel
    No.
    of
    Thread
    Size
    Mounting Fasteners
    Included
    Wire Connection
    Ht.
    Wd.
    Each
    1 Pole—Toggle-Switch Style
    3080V DC
    277V AC
    50/605,000 amp @ 277V AC
    7,500 amp @ 80V DC
    -40 to 1850.63"2"26-32
    NoQuick-Disconnect Terminal2"0.75"72015K115000000
     

    GFCI Turn-Lock Extension Cords

    Image of Product. Front orientation. Extension Cords. GFCI Turn-Lock Extension Cords.
    Add GFCI protection to turn-lock connections to shield people and equipment from electric shock. These cords cut power instantly when they detect a fault. The quarter-turn lock prevents disconnection under high vibration, such as on assembly lines or heavy machinery.
    Inline GFCI—The GFCI sits along the cord for easy access when you need to reset it. However, it doesn't protect the length of cord between the outlet and the GFCI.
    Manual Reset—Prevent unexpected start-up by cutting electricity until you press a reset button. Choose these cords for job sites, workshops, and outdoor areas where moisture and equipment faults are common.
    Power Indicator—A light indicates that power is flowing through the cord.
    Lg.,
    ft.
    Color
    AWG
    Current,
    amp
    Cable
    Designation
    For Use
    Outdoors
    Light Indicator
    Type
    Certification
    Each
    NEMA L6-30 Plug × Socket—240V AC
     
    Inline GFCI—Manual Reset
    3Yellow10
    30SJTW
    YesCSA Certified, UL Listed
    7348K420000000
    6Yellow10
    30SJTW
    YesCSA Certified, UL Listed
    7348K65000000
    25Yellow10
    30SJEOOW
    YesPowerUL Listed
    7348K72000000
     
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