Free Shipping Over $99
Square D LI36350 Molded Case Circuit Breaker
- 350A
- 3 Pole
- I-Line
Square D
LI36350
Molded Case Circuit Breaker
Brand
Square D
SKU
LI36350
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Square D LI36350 - 350A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D LI36350 - 350A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | LI36350 |
| Series | LI |
| Amperage | 350A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480Y/277VAC, 200kA @ 480VAC, 100kA @ 600Y/347VAC, 100kA @ 600VAC |
| Frame Type | LI |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards |
| Wire Gauge | (2) 4/0 AWG - 500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 4/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB 1, NFPA 70, UL 489 |
| Approval | CSA, NOM, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, High Interrupting Capacity, HACR Rated |
| Special Features | Current Limiting |
Quantity
Square D LI36350 - 350A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | LI36350-R |
| Series | LI |
| Amperage | 350A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480Y/277VAC, 200kA @ 480VAC, 100kA @ 600Y/347VAC, 100kA @ 600VAC |
| Frame Type | LI |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards |
| Wire Gauge | (2) 4/0 AWG - 500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 4/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB 1, NFPA 70, UL 489 |
| Approval | CSA, NOM, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, High Interrupting Capacity, HACR Rated |
| Special Features | Current Limiting |
Similar Items
450A 3 Pole Molded Case Circuit Breaker
500A 3 Pole Molded Case Circuit Breaker
600A 3 Pole Molded Case Circuit Breaker
Description
Designed to protect sensitive industrial systems, this 350A L-frame breaker minimizes peak let-through current during faults. It provides reliable thermal-magnetic protection for heavy-duty commercial facilities. Featuring a specialized plug-on jaw connection, it mounts into Square D I-Line panelboards. For modern upgrades, this legacy component is replaced by the PowerPacT LRA36400U31X when the trip unit is adjusted to 350 amps. It is rated for 200kAIC at 480VAC with adjustable magnetic trip.Specifications
| Brand | Square D |
|---|---|
| Part Number | LI36350 |
| Series | LI |
| Amperage | 350A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480Y/277VAC, 200kA @ 480VAC, 100kA @ 600Y/347VAC, 100kA @ 600VAC |
| Frame Type | LI |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards |
| Wire Gauge | (2) 4/0 AWG - 500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 4/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB 1, NFPA 70, UL 489 |
| Approval | CSA, NOM, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, High Interrupting Capacity, HACR Rated |
| Special Features | Current Limiting |
Product FAQs
5 answersWhat panelboards are compatible with the LI36350 circuit breaker?
This breaker features an I-Line style plug-in connection and is designed exclusively for use in Square D I-Line panelboards and switchboards. It will not fit standard QO or NQ panels.
What does the LI trip function indicate on this breaker?
The LI designation means the breaker provides Long-Time (L) and Instantaneous (I) protection. It uses a thermal magnetic trip unit with a fixed thermal element for overload protection and an adjustable magnetic element for short-circuit protection.
What size wire can be used with the lugs on the LI36350?
The factory lugs accept two wires per phase, ranging from 4/0 AWG to 500 kcmil. They are rated for both aluminum and copper conductors.
Is the Square D LI36350 still in active production?
The LI36350 is a legacy L-Frame circuit breaker. For modern upgrades or replacements, Square D recommends the PowerPacT L-Frame series, specifically the LRA36400U31X, which can have its trip unit adjusted to match the 350A rating.
What does the 200kA interrupting rating mean for this L-Frame breaker?
The 200kA rating at 240V and 480V indicates this is a current-limiting circuit breaker. It is designed to minimize peak let-through current during high-fault conditions, providing robust protection for heavy-duty commercial and industrial distribution systems.
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.