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    68 Products

    Harsh-Environment Circuit Breakers

    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
    Image of Product. Front orientation. Circuit Breakers. Harsh-Environment Circuit Breakers, 1 Pole—Push-Pull-Button Style.
     
    Thermal
    30286,000 amp @ 28V DC0.49"2.48"Panel——YesScrew Terminal———-65 to 165UL 1077UL Recognized Component
    		6608T11000000
    35286,000 amp @ 28V DC0.49"2.48"Panel——YesScrew Terminal———-65 to 165UL 1077UL Recognized Component
    		6608T1200000
    40286,000 amp @ 28V DC0.49"2.48"Panel——YesScrew Terminal———-65 to 165UL 1077UL Recognized Component
    		6608T1300000
    45286,000 amp @ 28V DC0.49"2.48"Panel——YesScrew Terminal———-65 to 165UL 1077UL Recognized Component
    		6608T1400000
    50 286,000 amp @ 28V DC0.49"2.48"Panel——YesScrew Terminal———-65 to 165UL 1077UL Recognized Component
    		6608T1500000
    55286,000 amp @ 28V DC0.49"2.48"Panel——YesScrew Terminal———-65 to 165UL 1077UL Recognized Component
    		6608T1600000
    60286,000 amp @ 28V DC0.49"2.48"Panel——YesScrew Terminal———-65 to 165UL 1077UL Recognized Component
    		6608T1700000
    70286,000 amp @ 28V DC0.49"2.48"Panel——YesScrew Terminal———-65 to 165UL 1077UL Recognized Component
    		6608T1800000
    80286,000 amp @ 28V DC0.49"2.48"Panel——YesScrew Terminal———-65 to 165UL 1077UL Recognized Component
    		6608T1900000
    90286,000 amp @ 28V DC0.49"2.48"Panel——YesScrew Terminal———-65 to 165UL 1077UL Recognized Component
    		6608T2100000
     
    1 Pole—Lever Style
    Image of Product. Front orientation. Circuit Breakers. Harsh-Environment Circuit Breakers, 1 Pole—Lever Style.
     
    Thermal
    30481,500 amp @ 48V DC———30.19"NoScrew Terminal3.44"2.32"1.72"-40 to 185—CE Marked
    		4514K22200000
    40481,500 amp @ 48V DC———30.19"NoScrew Terminal3.44"2.32"1.72"-40 to 185—CE Marked
    		4514K22300000
    50 481,500 amp @ 48V DC———30.19"NoScrew Terminal3.44"2.32"1.72"-40 to 185—CE Marked
    		4514K22400000
    60481,500 amp @ 48V DC———30.19"NoScrew Terminal3.44"2.32"1.72"-40 to 185—CE Marked
    		4514K22500000
    70481,500 amp @ 48V DC———30.19"NoScrew Terminal3.44"2.32"1.72"-40 to 185—CE Marked
    		4514K22600000
    80481,500 amp @ 48V DC———30.19"NoScrew Terminal3.44"2.32"1.72"-40 to 185—CE Marked
    		4514K22700000
    100481,500 amp @ 48V DC———30.19"NoScrew Terminal3.44"2.32"1.72"-40 to 185—CE Marked
    		4514K22800000
    120481,500 amp @ 48V DC———30.19"NoScrew Terminal3.44"2.32"1.72"-40 to 185—CE Marked
    		4514K22900000
    135481,500 amp @ 48V DC———30.19"NoScrew Terminal3.44"2.32"1.72"-40 to 185—CE Marked
    		4514K23100000
    150481,500 amp @ 48V DC———30.19"NoScrew Terminal3.44"2.32"1.72"-40 to 185—CE Marked
    		4514K23200000
     
    1 Pole—Push-Button Style
    Image of Product. Front orientation. Circuit Breakers. Harsh-Environment Circuit Breakers, 1 Pole—Push-Button Style.
     
    Thermal
    30481,500 amp @ 48V DC———20.25"NoScrew Terminal2.89"1.9"1.44"-40 to 185—CE Marked
    		4514K13100000
    40481,500 amp @ 48V DC———20.25"NoScrew Terminal2.89"1.9"1.44"-40 to 185—CE Marked
    		4514K13200000
    50 481,500 amp @ 48V DC———20.25"NoScrew Terminal2.89"1.9"1.44"-40 to 185—CE Marked
    		4514K13300000
    60481,500 amp @ 48V DC———20.25"NoScrew Terminal2.89"1.9"1.44"-40 to 185—CE Marked
    		4514K13400000
    70481,500 amp @ 48V DC———20.25"NoScrew Terminal2.89"1.9"1.44"-40 to 185—CE Marked
    		4514K13500000
    80481,500 amp @ 48V DC———20.25"NoScrew Terminal2.89"1.9"1.44"-40 to 185—CE Marked
    		4514K13600000
    90481,500 amp @ 48V DC———20.25"NoScrew Terminal2.89"1.9"1.44"-40 to 185—CE Marked
    		4514K13700000
    100481,500 amp @ 48V DC———20.25"NoScrew Terminal2.89"1.9"1.44"-40 to 185—CE Marked
    		4514K13800000
    120481,500 amp @ 48V DC———20.25"NoScrew Terminal2.89"1.9"1.44"-40 to 185—CE Marked
    		4514K13900000
    135481,500 amp @ 48V DC———20.25"NoScrew Terminal2.89"1.9"1.44"-40 to 185—CE Marked
    		4514K14100000
    150481,500 amp @ 48V DC———20.25"NoScrew Terminal2.89"1.9"1.44"-40 to 185—CE Marked
    		4514K14200000
     

    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
    62,000 amp @ 12V DCFuse Block0.95"0.79"0.25"-40 to 185IP54
    		SAE J5534212T1100000
    82,000 amp @ 12V DCFuse Block0.95"0.79"0.25"-40 to 185IP54
    		SAE J5534212T120000
    102,000 amp @ 12V DCFuse Block0.95"0.79"0.25"-40 to 185IP54
    		SAE J5534212T130000
    152,000 amp @ 12V DCFuse Block0.95"0.79"0.25"-40 to 185IP54
    		SAE J5534212T140000
    202,000 amp @ 12V DCFuse Block0.95"0.79"0.25"-40 to 185IP54
    		SAE J5534212T150000
    252,000 amp @ 12V DCFuse Block0.95"0.79"0.25"-40 to 185IP54
    		SAE J5534212T160000
    302,000 amp @ 12V DCFuse Block0.95"0.79"0.25"-40 to 185IP54
    		SAE J5534212T170000
     
    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.
    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.
    Current,
    A
    Breakthrough Current @ Voltage
    Mounting
    Location
    Ht.
    Wd.
    Blade
    Ht.
    Temp. Range,
    ° F
    Enclosure
    Rating
    Specs.
    Met
    Each
    24V DC
    62,000 amp @ 24V DCFuse Block1.16"0.79"0.25"-40 to 185IP30
    		—4212T31000000
    82,000 amp @ 24V DCFuse Block1.16"0.79"0.25"-40 to 185IP30
    		—4212T3200000
    102,000 amp @ 24V DCFuse Block1.16"0.79"0.25"-40 to 185IP30
    		—4212T3300000
    152,000 amp @ 24V DCFuse Block1.16"0.79"0.25"-40 to 185IP30
    		—4212T3400000
    202,000 amp @ 24V DCFuse Block1.16"0.79"0.25"-40 to 185IP30
    		—4212T3500000
    252,000 amp @ 24V DCFuse Block1.16"0.79"0.25"-40 to 185IP30
    		—4212T3600000
    302,000 amp @ 24V DCFuse Block1.16"0.79"0.25"-40 to 185IP30
    		—4212T3700000
     
    48V DC
    32,000 amp @ 48V DCFuse Block1 1/2"0.87"0.25"-40 to 185IP40
    		SAE J5534212T4100000
    42,000 amp @ 48V DCFuse Block1 1/2"0.87"0.25"-40 to 185IP40
    		SAE J5534212T4200000
    52,000 amp @ 48V DCFuse Block1 1/2"0.87"0.25"-40 to 185IP40
    		SAE J5534212T4300000
    62,000 amp @ 48V DCFuse Block1 1/2"0.87"0.25"-40 to 185IP40
    		SAE J5534212T4400000
    7 1/2 2,000 amp @ 48V DCFuse Block1 1/2"0.87"0.25"-40 to 185IP40
    		SAE J5534212T4500000
    82,000 amp @ 48V DCFuse Block1 1/2"0.87"0.25"-40 to 185IP40
    		SAE J5534212T4600000
    102,000 amp @ 48V DCFuse Block1 1/2"0.87"0.25"-40 to 185IP40
    		SAE J5534212T4700000
    152,000 amp @ 48V DCFuse Block1 1/2"0.87"0.25"-40 to 185IP40
    		SAE J5534212T4800000
    202,000 amp @ 48V DCFuse Block1 1/2"0.87"0.25"-40 to 185IP40
    		SAE J5534212T4900000
    252,000 amp @ 48V DCFuse Block1 1/2"0.87"0.25"-40 to 185IP40
    		SAE J5534212T5100000
     
    72V DC
    250V AC
    1/42,000 amp @ 250V AC
    2,000 amp @ 72V DC    		Fuse Block2.06"0.96"0.25"0 to 140—UL 10776493T1100000
    1/22,000 amp @ 250V AC
    2,000 amp @ 72V DC    		Fuse Block2.06"0.96"0.25"0 to 140—UL 10776493T1200000
    12,000 amp @ 250V AC
    2,000 amp @ 72V DC    		Fuse Block2.06"0.96"0.25"0 to 140—UL 10776493T1300000
    1 1/22,000 amp @ 250V AC
    2,000 amp @ 72V DC    		Fuse Block2.06"0.96"0.25"0 to 140—UL 10776493T1400000
    22,000 amp @ 250V AC
    2,000 amp @ 72V DC    		Fuse Block2.06"0.96"0.25"0 to 140—UL 10776493T1500000
    2 1/22,000 amp @ 250V AC
    2,000 amp @ 72V DC    		Fuse Block2.06"0.96"0.25"0 to 140—UL 10776493T1600000
    32,000 amp @ 250V AC
    2,000 amp @ 72V DC    		Fuse Block2.06"0.96"0.25"0 to 140—UL 10776493T1700000
    42,000 amp @ 250V AC
    2,000 amp @ 72V DC    		Fuse Block2.06"0.96"0.25"0 to 140—UL 10776493T1800000
    52,000 amp @ 250V AC
    2,000 amp @ 72V DC    		Fuse Block2.06"0.96"0.25"0 to 140—UL 10776493T1900000
    62,000 amp @ 250V AC
    2,000 amp @ 72V DC    		Fuse Block2.06"0.96"0.25"0 to 140—UL 10776493T2100000
    82,000 amp @ 250V AC
    2,000 amp @ 72V DC    		Fuse Block2.06"0.96"0.25"0 to 140—UL 10776493T2200000
    102,000 amp @ 250V AC
    2,000 amp @ 72V DC    		Fuse Block2.06"0.96"0.25"0 to 140—UL 10776493T2300000
     
    DIN-Rail Mount Holders for 250V AC/72V DC Circuit Breakers
    Image of Product. Back orientation. Circuit Breaker Mounts. Blade-Style Circuit Breakers.
    For DIN
    Rail Size, mm
    Wire Connection
    Each
    35Screw-Clamp Terminal6493T3000000
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