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Square D MH36700 Molded Case Circuit Breaker

  • 700A
  • 3 Pole
  • I-Line
Square D MH36700
Molded Case Circuit Breaker
Brand Square D
SKU MH36700
Select Item Condition
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  • 700A
  • 3 Pole
  • I-Line

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Square D MH36700 3 Pole Circuit Breaker

Square D MH36700 - 700A 3 Pole Molded Case Circuit Breaker

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$8,526.93 In Stock

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Description

Built for heavy-duty commercial distribution, this 700A device provides reliable long-time and instantaneous trip functions. The M-Frame construction includes a visual trip indicator to help facility managers quickly locate tripped circuits during outages. It mounts into compatible Square D I-Line panelboards and switchboards using standard plug-on jaw connections. For modern upgrades, this specific catalog number crosses over to the newer MJA36700 replacement model.

Specifications

Key specifications
Brand Square D
Part Number MH36700-R
Series MH
Amperage 700A
Poles 3
Mounting Style I-Line
Voltage 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC, 250VDC
Phase 3
AIC Rating 65kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC, 25kA @ 600Y/347VAC, 25kA @ 600VAC, 14kA @ 250VDC
Fit and installation
Terminal Type Lugs
For Use With Square D I-Line Panelboards, Switchboards
Wire Gauge (3) 3/0 AWG-500 kcmil (Al/Cu)
Max Wire 500 kcmil
Min Wire 3/0 AWG
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Adjustable Magnetic
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch
Accessories Lugs (AL900MA)
Standards CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, High Interrupting Capacity, Visual Trip Indicator

Product FAQs

6 answers
What panelboards and switchboards are compatible with the MH36700?

This breaker is designed exclusively for use in Square D I-Line panelboards and switchboards. It will not fit in standard load centers or non-I-Line distribution panels.

How does the I-Line mounting system work on this breaker?

The MH36700 features a plug-on jaw connection that mounts directly to the I-Line bus stack. This design utilizes a blow-on connection where magnetic forces during a short circuit cause the jaws to grip the bus bar tighter.

What wire sizes are accepted by the lugs on the MH36700?

The factory lugs accept three 3/0 AWG to 500 kcmil aluminum or copper conductors per phase.

How does the adjustable magnetic trip function on this breaker?

The MH36700 utilizes a thermal magnetic trip unit with a fixed thermal element for overload protection and an adjustable magnetic element. This allows you to fine-tune the instantaneous short-circuit trip threshold to suit your specific application.

What does the LI trip function code mean?

The LI designation indicates that the breaker provides Long-Time and Instantaneous protection. The Long-Time function protects against sustained overloads, while the Instantaneous function trips the breaker immediately during a short circuit.

Is there a modern replacement for the legacy MH36700?

Yes. For modern upgrades, the legacy MH36700 crosses over to the newer PowerPact M-frame MJA36700 replacement model.

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Reviews

5.0
Rated 5.0 out of 5 stars
Based on 4 reviews
Total 5 star reviews: 4
Total 4 star reviews: 0
Total 3 star reviews: 0
Total 2 star reviews: 0
Total 1 star reviews: 0
Rating
Ratings
4 reviews
  • DL
    Deanna L.
    Verified Buyer
    Reviewing
    Square D MH36800 - 800A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    8/11/26
    Square D MH36800 - 800A 3 Pole Molded Case Circuit Breaker

    Another satisfied customer.

  • SB
    Steve B.
    Verified Buyer
    Reviewing
    Square D MH36600 - 600A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    1/23/26
    Square MH36600

    Breaker was as advertised excellent condition

  • SA
    Stewart A.
    Flag of United States
    Reviewing
    Square D MH38 Panel Board Enclosure
    I recommend this product
    Rated 5 out of 5 stars
    3/25/19
    not at local supply

    got what I needed, because it was not available at my local supply house.

  • WW
    William W.
    Flag of United States
    Reviewing
    Square D MH32 Panel Board Enclosure
    I recommend this product
    Rated 5 out of 5 stars
    7/1/18
    INSIDE THE BOX

    Great Buy ! Shipped on time. No Damage. Just what we ordered Thanks