Skip to content
Free Economy Shipping Available! | Refer to FAQ For Additional Information | websales@breakerhunters.com | 877-963-4543
Free Economy Shipping Available! | Refer to FAQ For Additional Information | websales@breakerhunters.com | 877-963-4543

Square D: Circuit Breakers

Square D Circuit Breakers

  • MHL36400 MHL Frame Style, Molded Case Circuit Breaker, Thermal Magnetic Non-interchangeable Trip Unit, 400 Ampere at 40 Degree Celsius, 3 Pole, Line and Load End Terminals Standard. New Surplus and Certified Reconditioned with 1 Year Warranty.

    MHL36400

    Square-D

    Product Description MHL Frame Style, Molded Case Circuit Breaker, Thermal Magnetic Non-interchangeable Trip Unit, 400 Ampere at 40 Degree Celsius,...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Delivery
    Free with $500 Order
    Get it by
  • MHL36450 MHL Frame Style, Molded Case Circuit Breaker, Thermal Magnetic Non-interchangeable Trip Unit, 450 Ampere at 40 Degree Celsius, 3 Pole, Line and Load End Terminals Standard. New Surplus and Certified Reconditioned with 1 Year Warranty.

    MHL36450

    Square-D

    Product Description MHL Frame Style, Molded Case Circuit Breaker, Thermal Magnetic Non-interchangeable Trip Unit, 450 Ampere at 40 Degree Celsius,...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Delivery
    Free with $500 Order
    Get it by
  • MHL36500 MHL Frame Style, Molded Case Circuit Breaker, Thermal Magnetic Non-interchangeable Trip Unit, 500 Ampere at 40 Degree Celsius, 3 Pole, Line and Load End Terminals Standard. New Surplus and Certified Reconditioned with 1 Year Warranty.

    MHL36500

    Square-D

    Product Description MHL Frame Style, Molded Case Circuit Breaker, Thermal Magnetic Non-interchangeable Trip Unit, 500 Ampere at 40 Degree Celsius,...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Delivery
    Free with $500 Order
    Get it by
  • MHL36600 MHL Frame Style, Molded Case Circuit Breaker, Thermal Magnetic Non-interchangeable Trip Unit, 600 Ampere at 40 Degree Celsius, 3 Pole, Line and Load End Terminals Standard. New Surplus and Certified Reconditioned with 1 Year Warranty.

    MHL36600

    Square-D

    Product Description MHL Frame Style, Molded Case Circuit Breaker, Thermal Magnetic Non-interchangeable Trip Unit, 600 Ampere at 40 Degree Celsius,...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Delivery
    Free with $500 Order
    Get it by
  • MHL366001352 MHL Frame Style, Molded Case Circuit Breaker, Thermal Magnetic Non-interchangeable Trip Unit, 600 Ampere at 40 Degree Celsius, 3 Pole, with 2A-2B Auxilliary Installed, Line and Load End Terminals Standard. New Surplus and Certified Reconditioned with 1 Year Warranty.

    MHL366001352

    Square-D

    Product Description MHL Frame Style, Molded Case Circuit Breaker, Thermal Magnetic Non-interchangeable Trip Unit, 600 Ampere at 40 Degree Celsius,...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Delivery
    Free with $500 Order
    Get it by
  • MHL366001422 MHL Frame Style, Molded Case Circuit Breaker, Thermal Magnetic Non-interchangeable Trip Unit, 600 Ampere at 40 Degree Celsius, 3 Pole, with Right Hand 2A-2B Auxilliary Installed, with Left Hand 120-240VAC Shunt Installed. New Surplus and Certified Reconditioned with 1 Year Warranty.

    MHL366001422

    Square-D

    Product Description MHL Frame Style, Molded Case Circuit Breaker, Thermal Magnetic Non-interchangeable Trip Unit, 600 Ampere at 40 Degree Celsius,...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Delivery
    Free with $500 Order
    Get it by
  • MHL36700 MHL Frame Style, Molded Case Circuit Breaker, Thermal Magnetic Non-interchangeable Trip Unit, 700 Ampere at 40 Degree Celsius, 3 Pole, Line and Load End Terminals Standard. New Surplus and Certified Reconditioned with 1 Year Warranty.

    MHL36700

    Square-D

    Product Description MHL Frame Style, Molded Case Circuit Breaker, Thermal Magnetic Non-interchangeable Trip Unit, 700 Ampere at 40 Degree Celsius,...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Delivery
    Free with $500 Order
    Get it by
  • MHL36800 MHL Frame Style, Molded Case Circuit Breaker, Thermal Magnetic Non-interchangeable Trip Unit, 800 Ampere at 40 Degree Celsius, 3 Pole, Line and Load End Terminals Standard. New Surplus and Certified Reconditioned with 1 Year Warranty.

    MHL36800

    Square-D

    Product Description MHL Frame Style, Molded Case Circuit Breaker, Thermal Magnetic Non-interchangeable Trip Unit, 800 Ampere at 40 Degree Celsius,...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Delivery
    Free with $500 Order
    Get it by
  • MHL368001595 MHL Frame Style, Molded Case Circuit Breaker, Thermal Magnetic Non-interchangeable Trip Unit, 800 Ampere at 40 Degree Celsius, 3 Pole, with Right Hand 2A-2B Auxilliary Installed, with Left Hand 120VAC UVR Installed. New Surplus and Certified Reconditioned with 1 Year Warranty.

    MHL368001595

    Square-D

    Product Description MHL Frame Style, Molded Case Circuit Breaker, Thermal Magnetic Non-interchangeable Trip Unit, 800 Ampere at 40 Degree Celsius,...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Delivery
    Free with $500 Order
    Get it by
  • MHL36900 MHL Frame Style, Molded Case Circuit Breaker, Thermal Magnetic Non-interchangeable Trip Unit, 900 Ampere at 40 Degree Celsius, 3 Pole, Line and Load End Terminals Standard. New Surplus and Certified Reconditioned with 1 Year Warranty.

    MHL36900

    Square-D

    Product Description MHL Frame Style, Molded Case Circuit Breaker, Thermal Magnetic Non-interchangeable Trip Unit, 900 Ampere at 40 Degree Celsius,...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Delivery
    Free with $500 Order
    Get it by
  • MHP361000 MHP Frame Style, Molded Case Circuit Breaker, Panel Mounted, Thermal Magnetic Non-interchangeable Trip Unit, 1000 Ampere at 40 Degree Celsius, 3 Pole, Load End Terminals Standard. New Surplus and Certified Reconditioned with 1 Year Warranty.

    MHP361000

    Square-D

    Product Description MHP Frame Style, Molded Case Circuit Breaker, Panel Mounted, Thermal Magnetic Non-interchangeable Trip Unit, 1000 Ampere at 40...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Delivery
    Free with $500 Order
    Get it by
  • MHP36300 MHP Frame Style, Molded Case Circuit Breaker, Panel Mounted, Thermal Magnetic Non-interchangeable Trip Unit, 300 Ampere at 40 Degree Celsius, 3 Pole, Load End Terminals Standard. New Surplus and Certified Reconditioned with 1 Year Warranty.

    MHP36300

    Square-D

    Product Description MHP Frame Style, Molded Case Circuit Breaker, Panel Mounted, Thermal Magnetic Non-interchangeable Trip Unit, 300 Ampere at 40 ...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Delivery
    Free with $500 Order
    Get it by
  • MHP36350 MHP Frame Style, Molded Case Circuit Breaker, Panel Mounted, Thermal Magnetic Non-interchangeable Trip Unit, 350 Ampere at 40 Degree Celsius, 3 Pole, Load End Terminals Standard. New Surplus and Certified Reconditioned with 1 Year Warranty.

    MHP36350

    Square-D

    Product Description MHP Frame Style, Molded Case Circuit Breaker, Panel Mounted, Thermal Magnetic Non-interchangeable Trip Unit, 350 Ampere at 40 ...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Delivery
    Free with $500 Order
    Get it by
  • MHP36400 MHP Frame Style, Molded Case Circuit Breaker, Panel Mounted, Thermal Magnetic Non-interchangeable Trip Unit, 400 Ampere at 40 Degree Celsius, 3 Pole, Load End Terminals Standard. New Surplus and Certified Reconditioned with 1 Year Warranty.

    MHP36400

    Square-D

    Product Description MHP Frame Style, Molded Case Circuit Breaker, Panel Mounted, Thermal Magnetic Non-interchangeable Trip Unit, 400 Ampere at 40 ...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Delivery
    Free with $500 Order
    Get it by
  • MHP36450 MHP Frame Style, Molded Case Circuit Breaker, Panel Mounted, Thermal Magnetic Non-interchangeable Trip Unit, 450 Ampere at 40 Degree Celsius, 3 Pole, Load End Terminals Standard. New Surplus and Certified Reconditioned with 1 Year Warranty.

    MHP36450

    Square-D

    Product Description MHP Frame Style, Molded Case Circuit Breaker, Panel Mounted, Thermal Magnetic Non-interchangeable Trip Unit, 450 Ampere at 40 ...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Delivery
    Free with $500 Order
    Get it by
  • MHP36500 MHP Frame Style, Molded Case Circuit Breaker, Panel Mounted, Thermal Magnetic Non-interchangeable Trip Unit, 500 Ampere at 40 Degree Celsius, 3 Pole, Load End Terminals Standard. New Surplus and Certified Reconditioned with 1 Year Warranty.

    MHP36500

    Square-D

    Product Description MHP Frame Style, Molded Case Circuit Breaker, Panel Mounted, Thermal Magnetic Non-interchangeable Trip Unit, 500 Ampere at 40 ...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Delivery
    Free with $500 Order
    Get it by
  • MHP36600 MHP Frame Style, Molded Case Circuit Breaker, Panel Mounted, Thermal Magnetic Non-interchangeable Trip Unit, 600 Ampere at 40 Degree Celsius, 3 Pole, Load End Terminals Standard. New Surplus and Certified Reconditioned with 1 Year Warranty.

    MHP36600

    Square-D

    Product Description MHP Frame Style, Molded Case Circuit Breaker, Panel Mounted, Thermal Magnetic Non-interchangeable Trip Unit, 600 Ampere at 40 ...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Delivery
    Free with $500 Order
    Get it by
  • MHP36700 MHP Frame Style, Molded Case Circuit Breaker, Panel Mounted, Thermal Magnetic Non-interchangeable Trip Unit, 700 Ampere at 40 Degree Celsius, 3 Pole, Load End Terminals Standard. New Surplus and Certified Reconditioned with 1 Year Warranty.

    MHP36700

    Square-D

    Product Description MHP Frame Style, Molded Case Circuit Breaker, Panel Mounted, Thermal Magnetic Non-interchangeable Trip Unit, 700 Ampere at 40 ...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Delivery
    Free with $500 Order
    Get it by
  • MHP36800 MHP Frame Style, Molded Case Circuit Breaker, Panel Mounted, Thermal Magnetic Non-interchangeable Trip Unit, 800 Ampere at 40 Degree Celsius, 3 Pole, Load End Terminals Standard. New Surplus and Certified Reconditioned with 1 Year Warranty.

    MHP36800

    Square-D

    Product Description MHP Frame Style, Molded Case Circuit Breaker, Panel Mounted, Thermal Magnetic Non-interchangeable Trip Unit, 800 Ampere at 40 ...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Delivery
    Free with $500 Order
    Get it by
  • MX36100 MX (I-Line) Frame Style, Molded Case Circuit Breaker, 250 Amp Sensor Size, Electronic Non-Interchangeable Trip Unit, LSI Trip Unit Functions, 100 Ampere at 40 Degree Celsius, 3 Pole, with ARP040 Rating Plug Installed Standard. New Surplus and Certified Reconditioned with 1 Year Warranty.
    Call for Price

    MX36100

    Square-D

    Product Description MX (I-Line) Frame Style, Molded Case Circuit Breaker, 250 Amp Sensor Size, Electronic Non-Interchangeable Trip Unit, LSI Trip ...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Call for Price
    Delivery
    Free with $500 Order
    Get it by
  • MX36100G MX (I-Line) Frame Style, Molded Case Circuit Breaker, 250 Amp Sensor Size, Electronic Non-Interchangeable Trip Unit, LSIG Trip Unit Functions, 100 Ampere at 40 Degree Celsius, 3 Pole, with ARP040 Rating Plug Installed Standard. New Surplus and Certified Reconditioned with 1 Year Warranty.
    Call for Price

    MX36100G

    Square-D

    Product Description MX (I-Line) Frame Style, Molded Case Circuit Breaker, 250 Amp Sensor Size, Electronic Non-Interchangeable Trip Unit, LSIG Trip...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Call for Price
    Delivery
    Free with $500 Order
    Get it by
  • MXF36100 MXF Frame Style, Molded Case Circuit Breaker, 250 Amp Sensor Size, Electronic Non-Interchangeable Trip Unit, LSI Trip Unit Functions, 100 Ampere at 40 Degree Celsius, 3 Pole, Front Connected, No Terminals Standard. New Surplus and Certified Reconditioned with 1 Year Warranty.
    Call for Price

    MXF36100

    Square-D

    Product Description MXF Frame Style, Molded Case Circuit Breaker, 250 Amp Sensor Size, Electronic Non-Interchangeable Trip Unit, LSI Trip Unit Fun...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Call for Price
    Delivery
    Free with $500 Order
    Get it by
  • MXF36100G MXF Frame Style, Molded Case Circuit Breaker, 250 Amp Sensor Size, Electronic Non-Interchangeable Trip Unit, LSIG Trip Unit Functions, 100 Ampere at 40 Degree Celsius, 3 Pole, Front Connected, No Terminals Standard. New Surplus and Certified Reconditioned with 1 Year Warranty.
    Call for Price

    MXF36100G

    Square-D

    Product Description MXF Frame Style, Molded Case Circuit Breaker, 250 Amp Sensor Size, Electronic Non-Interchangeable Trip Unit, LSIG Trip Unit Fu...

    View full details
    Delivery
    Free with $500 Order
    Get it by
    Call for Price
    Delivery
    Free with $500 Order
    Get it by
  • MXF36800 MXF Frame Style, Molded Case Circuit Breaker, Micrologic Solid State Trip Unit, Bolt On, 800 Ampere at 40 Degree Celsius, 3 Pole, High Interrupting Capacity, Interrupting Rating: 65 Kiloampere @ 480 VAC, With Terminals. With 1 Year Warranty.

    MXF36800

    Square-D

    Product Description MXF Frame Style, Molded Case Circuit Breaker, Micrologic Solid State Trip Unit, Bolt On, 800 Ampere at 40 Degree Celsius, 3 Po...

    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 175 reviews

Always a pleasure buying from Breaker Hunters

Jeffrey Seeley
MXD63B800
Great Store

Took them awhile to find an OLD breaker for me but they did come up what I needed. Great service. Highly recommend.

Wayne Nelsen
Q20
Great!!!

My salesperson was very helpful and worked with me nicely to get the Breaker I need and out to me in a really quick fashion. Thanks again!!

John Thyen
NCG31200F w/1000A Rating Plug
Great service

The service was excellent and very fast delivery, highly recommend.

Tim McGregor
W200M2CFC
Excelente Servicio

Muy cumplidores en sus despachos, los productos impecables Muchas Gracias

EximtecSpA att Marie Mayo
V201K5CJZ1

B10.2

Tom Vanderburg
B10.2
Fast and efficient

very fast and efficient

Tim McGregor
NDA Shipping
Great job

I ordered 9 starter switches and they were next day delivery. Installed and worked great. I am in the process of ordering spare ones now. Definitely recommend

Tim McGregor
W200M1CFC
STARTER REPLACEMENT

Had to replace an older starter. Communication with the company was easy and accurate. Customer service worked with me to ensure the order was correct and shipped on time. Highly recommend reaching out with any questions, great company.

ADAM JEFFREY
509-FOD

CHND312T33W

Jonathan Ragland
CHND312T33W

Great service, exactly what I ordered, thanks

Frank Roush
SEDA36AT0060 w/SRPE60A40

QUICK SERVICE, EXCELLENT PRODUCT. CUSTOMER IS VERY HAPPY !

Susan Sandridge
RD316T33WS21

Excellent service very happy with the product

Brent Hickman
LG3450S03

PAF361000

Cindy Miller
PAF361000

QUICK. SMOOTH. AND EASY. THANK YOU

Nationwide Electric Supply Co., Inc.
CHND312T33W