Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Square D FAL34090 Molded Case Circuit Breaker
- 90A
- 3 Pole
- Unit Mount
Square D
FAL34090
Molded Case Circuit Breaker
Brand
Square D
SKU
FAL34090
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Square D FAL34090 - 90A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D FAL34090 - 90A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | FAL34090 |
| Series | FAL |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | FAL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Enclosures, Switchboards |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, HACR Rated, IEC 60947-2, NEMA AB 1, UL 489, W-C-375B/GEN |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Quantity
Square D FAL34090 - 90A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | FAL34090-R |
| Series | FAL |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | FAL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Enclosures, Switchboards |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, HACR Rated, IEC 60947-2, NEMA AB 1, UL 489, W-C-375B/GEN |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Similar Items
100A 3 Pole Molded Case Circuit Breaker
100A 3 Pole Molded Case Circuit Breaker
FAL361001021 - 100A 3 Pole Molded Case Circuit Breaker
Description
Engineered for commercial applications, the Square D FAL34090 is a 3-pole, 90A molded case circuit breaker. It provides robust thermal-magnetic protection for critical electrical systems. This unit-mount breaker installs into compatible Square D enclosures and switchboards. As a legacy F-Frame component, it replaces older units, with the BDL36090 serving as its modern substitute. Rated 18 kAIC at 480VAC, it features fixed trip settings, factory-installed lugs, and a HACR rating.Specifications
| Brand | Square D |
|---|---|
| Part Number | FAL34090 |
| Series | FAL |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | FAL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Enclosures, Switchboards |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, HACR Rated, IEC 60947-2, NEMA AB 1, UL 489, W-C-375B/GEN |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
7 answersWhat is the difference between the Square D FAL34090 and the FA34090?
The FAL34090 is a unit-mount (feed-thru) circuit breaker designed to be bolted directly to a backpan or enclosure. The FA34090 is an I-Line breaker designed to plug onto an I-Line busbar system. They are not interchangeable.
Is the FAL34090 still in active production by Square D?
No, the Square D F-frame series is a legacy product. For new installations, Schneider Electric has replaced the F-frame with the PowerPact B-frame series. However, the FAL34090 remains available as a direct replacement for existing panels.
Can I adjust the trip settings on the FAL34090?
No, this breaker features fixed thermal and fixed magnetic trip elements. It does not have adjustable dials for the long-time or instantaneous trip functions.
Can the FAL34090 be reverse fed?
Yes, standard Square D F-frame thermal-magnetic breakers like the FAL34090 can be reverse fed, provided they do not have specific Line and Load markings restricting power flow direction.
What is the difference between FAL, FHL, and FCL breakers?
These prefixes indicate the interrupting capacity of the F-frame breaker. FAL is the standard interrupting version (18kA at 480VAC), FHL is the high interrupting version, and FCL is the extra-high interrupting version.
Does the FAL34090 come with lugs on both the line and load sides?
Yes, as a feed-thru unit-mount breaker, the FAL34090 includes lugs on both the line and load sides for direct wire connections.
What does the LI trip function code mean on the FAL34090?
LI stands for Long-Time and Instantaneous trip functions. The long-time function provides thermal overload protection, while the instantaneous function provides magnetic short-circuit protection.
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 39 reviews.
Reviews Summary
Generated by AI from 39 most recent customer reviews
Last updated 9/25/26
Customers say this circuit breaker arrives in excellent condition and works as expected. The product performs flawlessly and functions reliably. Many reviews highlight fast shipping, competitive pricing, and quick delivery times. Users appreciate the availability of refurbished and obsolete models. The parts arrive well-packed and in like-new condition. Common feedback addresses excellent communication and straightforward ordering. Overall, customers report satisfaction with product quality, value, and prompt service fulfillment.
Search
Rating
39 reviews
- PCPierre C.Verified BuyerReviewingSquare D FAL3603015M - 30A 3 Pole Motor Circuit ProtectorI recommend this productRated 5 out of 5 stars9/15/26Great service!!!
Bought this to replace the faulty one. Shipped overnight and arrived at noon as promised. Works as new. Very happy with this. Awesome help from the staff. Definitely my go to place now.
Thank you.
- MBMichael B.Verified BuyerReviewingSquare D FAL32030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/13/26Great product
This item worked as expected and is good quality. SuperBreakers did a great job with communication and delivery.
- ZBZachary B.Verified BuyerReviewingSquare D FAL36040 - 40A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/23/26Perfect
Exactly what we needed and worked flawlessly. Thanks
- JRJohn R.Verified BuyerReviewingSquare D FAL36100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/29/26Circuit Breaker
The breaker was in "like new" condition and well packed for shipping. Excellent value overall!
- RFRon F.Verified BuyerReviewingSquare D FAL340801021 - 80A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars5/13/26Square D FAL340801021 - 80A 3 Pole Molded Case Circuit Breaker
As usual SB has the best price and delivery was spot on!