Square D FAL34090-1212 Molded Case Circuit Breaker
- 90A
- 3 Pole
- Unit Mount
Square D
FAL34090-1212
Molded Case Circuit Breaker
Brand
Square D
SKU
FAL34090-1212
Quantity
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Square D FAL34090-1212 - 90A 3 Pole Molded Case Circuit Breaker
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Description
Designed for status monitoring, the Square D FAL34090-1212 is a 3-pole, 90A MCCB. It includes a factory-installed 1A/1B auxiliary switch, providing crucial feedback to external alarms when the breaker changes state. This unit-mount F-Frame breaker installs into Square D enclosures and control panels. It maintains legacy infrastructure, with the HDL36090 serving as its modern replacement. Rated 18 kAIC at 480VAC, it features reliable thermal-magnetic protection and a Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Part Number | FAL34090-1212 |
| 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, Control Panels |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Auxiliary Switch (1A/1B), Lugs |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
6 answersWhat does the "-1212" suffix mean on the Square D FAL34090-1212?
The "-1212" suffix indicates that this breaker includes a factory-installed 1A/1B auxiliary switch (one normally open and one normally closed contact) for remote status signaling.
What wire sizes are accepted by the terminals on the FAL34090-1212?
The factory-installed AL100FA line and load lugs accept 14 to 1/0 AWG copper wire or 12 to 1/0 AWG aluminum wire.
How does the FAL34090-1212 mount in a panel?
This is a unit-mount, feed-thru circuit breaker. It bolts directly to the mounting surface and uses lug-to-lug connections rather than plugging into a busbar or using an I-Line connection.
Are the trip settings adjustable on the FAL34090-1212?
No, this breaker features a thermal-magnetic trip unit with fixed long-time and fixed instantaneous (LI) trip functions.
What equipment is the FAL34090-1212 compatible with?
This legacy F-frame breaker is designed for use in compatible Square D enclosures, switchboards, and industrial control panels that accept unit-mount breakers.
Can the FAL34090-1212 be used in DC applications?
Yes, this breaker is rated for up to 250V DC with a 10kA interrupting capacity, in addition to its standard AC ratings.
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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.
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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!