Square D LCL36400-1021 Molded Case Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Quantity
Square D LCL36400-1021 - 400A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Engineered for commercial power distribution, this 400A unit-mount breaker features a factory-installed 120-240VAC shunt trip for remote tripping. It delivers reliable long-time and instantaneous (LI) protection. Designed to integrate into Square D switchboards and enclosures, this legacy L-frame device utilizes standard lug connections. It is replaced by the newer LJL36400U31X. Boasting an extra-high 65kAIC at 480VAC, the current-limiting design minimizes let-through energy.Specifications
| Brand | Square D |
|---|---|
| Series | LCL |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC, 35kA @ 600Y/347VAC, 35kA @ 600VAC |
| Frame Type | L |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Switchboards, Motor Control Centers, Enclosures |
| Wire Gauge | (1) 1 AWG-600 kcmil (Al/Cu) or (2) 1 AWG-250 kcmil (Al/Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 1 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Undervoltage Release, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Shunt Trip (120-240VAC) |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, Extra High Interrupting Capacity, Common Trip, HACR Rated |
Product FAQs
4 answersWhat wire sizes are accepted by the lugs on the LCL36400-1021?
The standard lugs accept either one 1 AWG to 600 kcmil aluminum or copper wire, or two 1 AWG to 250 kcmil aluminum or copper wires per phase. This dual-wire capability is useful for parallel conductor runs.
How do the LI trip functions operate on this breaker?
The LI designation indicates Long-Time (L) and Instantaneous (I) protection. The Long-Time function provides fixed thermal overload protection. The Instantaneous function provides adjustable magnetic short-circuit protection, which can be set between 2000A and 4000A to coordinate with downstream devices.
What does the -1021 suffix indicate on this catalog number?
The -1021 suffix means this breaker comes with a factory-installed 120-240V AC shunt trip. This allows the breaker to be tripped remotely by applying voltage to the shunt trip coil, which is commonly used for emergency stop or safety interlock circuits.
What type of equipment is this L-frame breaker designed to be installed in?
The LCL36400-1021 is designed for use in Square D switchboards, motor control centers, and individual enclosures. It features a feed-thru unit mount design, meaning it bolts directly to the mounting surface and uses lugs for both line and load connections rather than plugging into a busbar.
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.
Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
- JLJon L.ReviewingSquare D LCL36300 - 300A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/30/21Obsolete Breaker Find
Looking for an obsolete SQ D breaker and Superbreakers had it. Saved the day.