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    15 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.
    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
    1548V 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
    		6782K511000000
    2048V 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
    		6782K51200000
    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
    		6782K51300000
    4048V 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
    		6782K3100000
     
    2 Poles—Toggle Switch
    1548V 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
    		6782K61100000
    2048V 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
    		6782K61200000
    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
    4048V 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
    		6782K31100000
     
    3 Poles—Toggle Switch
    1548V 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
    		6782K711000000
    2048V 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
    		6782K712000000
    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
    4048V 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
    		6782K312000000
    50 48V 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
    		6782K313000000
    6048V 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
    		6782K314000000
     

    Circuit Breaker Box Filler Plates

    Image of ProductInUse. Front orientation. Circuit Breaker Box Filler Plates.
    Image of Product. Front orientation. Circuit Breaker Box Filler Plates.
    Conceal live electrical components in circuit breaker boxes to prevent injury and damage. These filler plates snap into panel openings. They also have an adhesive strip, so they don’t move when you take the panel cover off.
    For Panel
    Cutout Wd.
    For Manufacturer
    (Series)
    Mount Type
    Ht.
    Wd.
    Dp.
    Material
    Flammability
    Rating
    Each
    3/4"Square D (QO)
    Square D (QOB)    		Snap In, Adhesive3/8"11/16"2 9/16"PlasticUL 94 V-2
    		4448N1100000
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