Square D NA36700 Molded Case Circuit Breaker
- 700A
- 3 Pole
- I-Line
Quantity
Square D NA36700 - 700A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
A reliable choice for industrial power distribution, the Square D NA36700 is a 3-pole, 700A molded case circuit breaker. It provides long-time and instantaneous (LI) protection through a fixed thermal and adjustable magnetic trip unit. The breaker installs into Square D I-Line panelboards, utilizing a secure plug-on connection. Rated to handle 50kAIC at 480VAC, it meets rigorous commercial demands. When upgrading, this N-Frame unit is replaced by the PowerPact MJA36700.Specifications
| Brand | Square D |
|---|---|
| Part Number | NA36700-R |
| Series | NA |
| Amperage | 700A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC |
| Frame Type | NA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | (4) 3/0 AWG - 600 kcmil (Al/Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Undervoltage Release, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Lugs (AL1200NA) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip, Trip-Free Mechanism |
Product FAQs
6 answersWhat equipment is the NA36700 designed to fit?
The NA36700 is a large N-frame molded case circuit breaker designed exclusively for commercial and industrial Square D I-Line panelboards and switchboards. It utilizes a specialized plug-on connection that mounts directly to the I-Line bus assembly.
What are the wire size requirements for the NA36700 lugs?
The factory lugs on this 700A breaker accommodate four 3/0 AWG to 600 kcmil conductors per phase. The terminals are dual-rated for either aluminum or copper wire.
Does the NA36700 feature an electronic trip unit?
No. This breaker uses a traditional thermal magnetic trip unit. It provides fixed thermal protection for long-time overloads and an adjustable magnetic setting for instantaneous short circuit protection.
Can the magnetic trip setting on the NA36700 be adjusted in the field?
Yes. While the thermal long-time trip is fixed at 700A, the instantaneous magnetic trip threshold is adjustable. This allows panel builders and electricians to fine-tune the short circuit response to coordinate with other protective devices in the system.
What is the phase jaw configuration for this 3-pole I-Line breaker?
As a standard 3-pole I-Line circuit breaker, the NA36700 is supplied with an ABC phase jaw configuration for mounting directly to the panelboard bus.
What is the modern PowerPact replacement for the legacy NA36700?
The NA36700 is a legacy N-frame breaker. When upgrading, the direct modern equivalent is the PowerPact M-frame, specifically catalog number MJA36700. This replacement provides the same 700A rating and I-Line mounting footprint.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 28 reviews.
- JMJimmy M.Verified BuyerReviewingFederal Pacific NA230 - 30A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/8/26NA230-30
Breaker arrived well packaged and sealed. Installed easily and working great for the customer.
- JEJames E.Verified BuyerReviewingFederal Pacific NA250 - 50A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/23/26Satisfactory
Fast shipping and exactly as expected
- EDErik D.Verified BuyerReviewingFederal Pacific NA250 - 50A 2 Pole Miniature Circuit BreakerI do not recommend this productRated 1 out of 5 stars7/21/26Result of FP
Breakers were wrong size and could not be useful....lost monies.
- JLJeff L.Verified BuyerReviewingFederal Pacific NA20 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars6/22/26Hard to find breaker
Fit perfectly. Great service
- PPPaul P. J.Verified BuyerReviewingFederal Pacific NA20 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars12/27/25perfect ...
all is great in the universe the FP 20A Breaker worked perfect.