Free Shipping Over $99
Square D NX361000G Molded Case Circuit Breaker
- 1000A
- 3 Pole
- I-Line
Square D
NX361000G
Molded Case Circuit Breaker
Brand
Square D
SKU
NX361000G
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Square D NX361000G - 1000A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Similar Items
Description
Engineered with a Micrologic Series B trip unit, this 1000A breaker delivers precise LSIG protection for industrial distribution networks. It mounts into Square D I-Line panelboards. For modern upgrades, it is replaced by the PowerPact PLA34100U63A (note the newer model's lower 25kA rating at 600V). Boasting a 100kAIC interrupt capacity at 480V, the solid-state design ensures true RMS sensing for accurate overcurrent response.Specifications
| Brand | Square D |
|---|---|
| Part Number | NX361000G-R |
| Series | NX |
| Amperage | 1000A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 125kA @ 240VAC, 100kA @ 480VAC, 65kA @ 600VAC |
| 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 | Electronic Trip |
|---|---|
| Trip Function Code | LSIG |
| Trip Function | Long-Time, Short-Time, Instantaneous, Ground Fault |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Bell Alarm, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Ground Fault Trip Protection (Factory Suffix G), Load Side Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Solid State Trip Unit, Micrologic Series B, Non-Interchangeable Trip, True RMS Sensing |
Product FAQs
7 answersWhat type of panelboards is the NX361000G compatible with?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It features a plug-on line-side connection specific to the I-Line bus system.
What is the modern replacement for the legacy NX361000G?
The NX frame is a legacy molded case circuit breaker. For modern upgrades, it is typically replaced by the Square D PowerPacT P-frame series, such as the PLA34100U33A or PLA34100U63A. Note that newer P-frame models may have a lower 25kA interrupt rating at 600VAC, so verify your system fault current requirements before crossing over.
What does the G suffix in the NX361000G catalog number indicate?
The G signifies that the breaker is equipped with integral Ground-Fault trip protection as part of its solid-state Micrologic trip unit.
What protection functions are included in the LSIG trip unit?
The electronic trip unit provides adjustable protection for Long-Time, Short-Time, Instantaneous, and Ground-Fault conditions. This allows engineers to precisely coordinate the breaker protection curve with the rest of the electrical distribution network.
How is the NX361000G mounted in an electrical enclosure?
It utilizes the Square D I-Line mounting system, which features a plug-on connection on the line side that mounts directly onto the panelboard bus, and standard lug connections on the load side.
What wire sizes are accepted by the load-side lugs on this breaker?
The factory lugs accept up to four aluminum or copper conductors ranging from 3/0 AWG to 600 kcmil per phase.
Does the NX361000G require a separate trip unit installation?
No, this breaker comes factory-equipped with an integral Micrologic Series B solid-state trip unit. The LSI and Ground-Fault dials must be properly adjusted by a qualified technician during commissioning to match the system coordination study.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.