Square D NA361200 Molded Case Circuit Breaker
- 1200A
- 3 Pole
- I-Line
Quantity
Square D NA361200 - 1200A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Quantity
Square D NA361200 - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | NA361200 |
| Series | NA |
| Amperage | 1200A |
| 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 |
Quantity
Square D NA361200 - 1200A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | NA361200-R |
| Series | NA |
| Amperage | 1200A |
| 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 |
Description
Designed for high-capacity industrial power distribution, the Square D NA361200 handles up to 1200A. It functions as a 3-pole molded case circuit breaker in the legacy N-Frame family. This breaker mounts into Square D I-Line panelboards and switchboards. For system upgrades, it is replaced by the PowerPact PJA36120U31A model. Providing 50 kAIC interrupting capacity at 480VAC, it includes long-time and instantaneous (LI) protection functions. The unit is HACR rated.Specifications
| Brand | Square D |
|---|---|
| Part Number | NA361200-R |
| Series | NA |
| Amperage | 1200A |
| 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 answersIs the NA361200 a legacy breaker, and what is the modern equivalent?
The NA361200 belongs to the legacy Square D N-frame family. For system upgrades or modern panelboard compatibility, it is typically replaced by the PowerPact P-frame model, specifically catalog number PJA36120U31A.
What type of switchgear is this breaker compatible with?
This breaker features an I-Line style plug-in connection designed exclusively for Square D I-Line power distribution panelboards and switchboards. It is not compatible with NQ, NF, or standard load centers.
How does the I-Line mounting style install into a panelboard?
I-Line breakers utilize a plug-on, jaw-type connection that engages directly onto the panelboard bus stack. This provides the line-side power connection without the need for traditional bolted bus arrangements, significantly reducing installation time.
What are the wire and lug requirements for the load side?
The load side terminals require four conductors per phase to handle the high ampacity. The lugs accept either aluminum or copper wire ranging from 3/0 AWG to 600 kcmil.
How does the thermal-magnetic trip unit on this breaker operate?
It features a fixed thermal element for long-time (L) overload protection and an adjustable magnetic element for instantaneous (I) short-circuit protection. The adjustable magnetic dial allows electricians to tune the breaker for specific inrush currents without causing nuisance tripping.
Can the NA361200 be used to protect HVAC equipment?
Yes, this model is HACR rated, meaning it is fully tested and certified for protecting industrial heating, air conditioning, and refrigeration circuits.
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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.