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Square D NA36800 Circuit Breaker

  • 800A
  • 3 Pole
  • I-Line
Square D NA36800
Circuit Breaker
Brand Square D
SKU NA36800
Select Item Condition
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  • 800A
  • 3 Pole
  • I-Line

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Square D NA36800 3 Pole Circuit Breaker

Re-Certified

$2,697.50 In Stock

Quantity

Description

Square D NA36800 3 Pole Circuit Breaker

The Square D NA36800 is a 3 Pole thermal magnetic molded case circuit breaker with a current rating of 800 Amps and a voltage rating of 600V. It has an interrupting rating of 50kAIC at 480V. The NA36800 has an I-Line style plug-in connection type and includes long time and instantaneous trip functions.

Specifications

Key specifications
Brand Square D
Series NA
Amperage 800A
Poles 3
Mounting Style I-Line
Voltage 600VAC, 250VDC
Phase 3
AIC Rating 100kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC
Fit and installation
Frame Type N
For Use With Square D I-Line Panelboards and Switchboards
Protection and operation
Trip Technology Thermal Magnetic

Product FAQs

6 answers
What type of panelboard is the Square D NA36800 designed for?

This N-frame breaker is designed exclusively for use in Square D I-Line panelboards and switchboards. It mounts directly onto the interior bus structure for a secure plug-in connection.

What is the modern replacement for the obsolete NA36800 circuit breaker?

The NA36800 is a legacy N-frame breaker. For system upgrades, it is typically replaced by the 800A PowerPact P-frame series, such as the PJA36080U31A, which mounts into the same I-Line panelboards.

What are the standard wire size and lug specifications for the NA36800?

The NA36800 accepts AL1200NE6 lugs on the load side. These lugs accommodate four cables per phase, with a wire range of #3/0 AWG to 600 kcmil.

Can I use aluminum wiring with the NA36800?

Yes, the standard AL1200NE6 lugs provided with this breaker are dual-rated for both copper (CU) and aluminum (AL) conductors.

What are the adjustable magnetic trip settings for the NA36800?

This thermal-magnetic breaker features an adjustable instantaneous magnetic trip. The low setting is 4000A and the high setting is 8000A.

What is the interrupting capacity of the NA36800 at different voltage levels?

While rated for 50 kAIC at 480V AC, the NA36800 also provides an interrupting capacity of 100 kAIC at 240V AC and 25 kAIC at 600V AC.

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Reviews

4.9
Rated 4.9 out of 5 stars
Based on 28 reviews
Rating
Ratings
28 reviews
  • JM
    Jimmy M.
    Verified Buyer
    Reviewing
    Federal Pacific NA230 - 30A 2 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    9/8/26
    NA230-30

    Breaker arrived well packaged and sealed. Installed easily and working great for the customer.

  • JE
    James E.
    Verified Buyer
    Reviewing
    Federal Pacific NA250 - 50A 2 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    7/23/26
    Satisfactory

    Fast shipping and exactly as expected

  • ED
    Erik D.
    Verified Buyer
    Reviewing
    Federal Pacific NA250 - 50A 2 Pole Miniature Circuit Breaker
    I do not recommend this product
    Rated 1 out of 5 stars
    7/21/26
    Result of FP

    Breakers were wrong size and could not be useful....lost monies.

  • JL
    Jeff L.
    Verified Buyer
    Reviewing
    Federal Pacific NA20 - 20A 1 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    6/22/26
    Hard to find breaker

    Fit perfectly. Great service

  • PP
    Paul P. J.
    Verified Buyer
    Reviewing
    Federal Pacific NA20 - 20A 1 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    12/27/25
    perfect ...

    all is great in the universe the FP 20A Breaker worked perfect.