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**Free Economy Shipping** on all orders over $500!! | sales@breakerhunters.com | 877-963-4543
**Free Economy Shipping** on all orders over $500!! | sales@breakerhunters.com | 877-963-4543

M-Frame Trip Units

  • MT3300T Trip Unit, M Frame Style, Thermal-Magnetic, 300 Ampere at 40 Degree Celsius, 3 Pole, Magnetic Trip Adjustment at 5-10 Times Continuous Ampere Rating, For Use in Molded Case Circuit Breakers With Optional Interchangeable Trip Units. New Surplus and Certified Reconditioned with 1 Year Warranty.
    Call for Price

    MT3300T

    Eaton / Cutler Hammer

    M-Frame Style Trip Unit Look under Parts & Accessories or follow the links below to order accessories used to create additional configurations ...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Call for Price
    Delivery
    Free with $500 Order
    Get it by
  • MT3350T Trip Unit, M Frame Style, Thermal-Magnetic, 350 Ampere at 40 Degree Celsius, 3 Pole, Magnetic Trip Adjustment at 5-10 Times Continuous Ampere Rating, For Use in Molded Case Circuit Breakers With Optional Interchangeable Trip Units. New Surplus and Certified Reconditioned with 1 Year Warranty.
    Call for Price

    MT3350T

    Eaton / Cutler Hammer

    M-Frame Style Trip Unit Look under Parts & Accessories or follow the links below to order accessories used to create additional configurations ...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Call for Price
    Delivery
    Free with $500 Order
    Get it by
  • MT3400T Trip Unit, M Frame Style, Thermal-Magnetic, 400 Ampere at 40 Degree Celsius, 3 Pole, Magnetic Trip Adjustment at 5-10 Times Continuous Ampere Rating, For Use in Molded Case Circuit Breakers With Optional Interchangeable Trip Units. New Surplus and Certified Reconditioned with 1 Year Warranty.
    Call for Price

    MT3400T

    Eaton / Cutler Hammer

    M-Frame Style Trip Unit Look under Parts & Accessories or follow the links below to order accessories used to create additional configurations ...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Call for Price
    Delivery
    Free with $500 Order
    Get it by
  • MT3450T Trip Unit, M Frame Style, Thermal-Magnetic, 450 Ampere at 40 Degree Celsius, 3 Pole, Magnetic Trip Adjustment at 5-10 Times Continuous Ampere Rating, For Use in Molded Case Circuit Breakers With Optional Interchangeable Trip Units. New Surplus and Certified Reconditioned with 1 Year Warranty.
    Call for Price

    MT3450T

    Eaton / Cutler Hammer

    M-Frame Style Trip Unit Look under Parts & Accessories or follow the links below to order accessories used to create additional configurations ...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Call for Price
    Delivery
    Free with $500 Order
    Get it by
  • MT3500T Trip Unit, M Frame Style, Thermal-Magnetic, 500 Ampere at 40 Degree Celsius, 3 Pole, Magnetic Trip Adjustment at 5-10 Times Continuous Ampere Rating, For Use in Molded Case Circuit Breakers With Optional Interchangeable Trip Units. New Surplus and Certified Reconditioned with 1 Year Warranty.
    Call for Price

    MT3500T

    Eaton / Cutler Hammer

    M-Frame Style Trip Unit Look under Parts & Accessories or follow the links below to order accessories used to create additional configurations ...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Call for Price
    Delivery
    Free with $500 Order
    Get it by
  • MT3600T Trip Unit, M Frame Style, Thermal-Magnetic, 600 Ampere at 40 Degree Celsius, 3 Pole, Magnetic Trip Adjustment at 5-10 Times Continuous Ampere Rating, For Use in Molded Case Circuit Breakers With Optional Interchangeable Trip Units. New Surplus and Certified Reconditioned with 1 Year Warranty.
    Call for Price

    MT3600T

    Eaton / Cutler Hammer

    M-Frame Style Trip Unit Look under Parts & Accessories or follow the links below to order accessories used to create additional configurations ...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Call for Price
    Delivery
    Free with $500 Order
    Get it by
  • MT3700T Trip Unit, M Frame Style, Thermal-Magnetic, 700 Ampere at 40 Degree Celsius, 3 Pole, Magnetic Trip Adjustment at 4-8 Times Continuous Ampere Rating, For Use in Molded Case Circuit Breakers With Optional Interchangeable Trip Units. New Surplus and Certified Reconditioned with 1 Year Warranty.
    Call for Price

    MT3700T

    Eaton / Cutler Hammer

    M-Frame Style Trip Unit Look under Parts & Accessories or follow the links below to order accessories used to create additional configurations ...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Call for Price
    Delivery
    Free with $500 Order
    Get it by
  • MT3800T Trip Unit, M Frame Style, Thermal-Magnetic, 800 Ampere at 40 Degree Celsius, 3 Pole, Magnetic Trip Adjustment at 4-8 Times Continuous Ampere Rating, For Use in Molded Case Circuit Breakers With Optional Interchangeable Trip Units. New Surplus and Certified Reconditioned with 1 Year Warranty.

    MT3800T

    Eaton / Cutler Hammer

    M-Frame Style Trip Unit Look under Parts & Accessories or follow the links below to order accessories used to create additional configurations ...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Delivery
    Free with $500 Order
    Get it by

Let customers speak for us

from 139 reviews

W201K6CF

Todd Peak
W201K6CF

The team at Breaker Hunters was a huge help. They had what I needed in stock and hundreds of dollars cheaper than anywhere else I could find. Would highly recommend them to anyone looking for electrical items!

Scott N.
5250C79G01 (120/110V AC)

Great product.

Dean P.
HMCP250K5C

Very good, and fast delivery

James G.
W200M1CFC

Thanks for the quick turn around on this breaker!

Ken W.
THED136125WL

Thanks, was pleased with service. Called in late in the day with Next Day Air order. They got it out and to my customer with no issues.

Jay B.
20RES10T

Everything was just as ordered, thanks for the help

Frank R.
HMCP100R3C

Good item.
Thank you

Capitol I.
FAL36040

Everything went very smoothly and product was as advertised

Gulf P.
H52

Great! Thank you for the great service.

Jeff B.
W200M1CFC

Great, however the box weighed more than the breaker. Twenty eight dollars shipping and handling was a bit much. Thanks Jack

John H.
GHB3100

The right part and delivered when promised.

David P.
AN16DN0AB

Great price and very fast shipping!

James F.
B14.0

I am impressed with the service , delivery & price .

Donald P.
HMCP250W5C

Very helpful and customer service went above and beyond

John B.
QGA32200