Square D FAL34020-1212 Molded Case Circuit Breaker
- 20A
- 3 Pole
- Unit Mount
Square D
FAL34020-1212
Molded Case Circuit Breaker
Brand
Square D
SKU
FAL34020-1212
Quantity
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Square D FAL34020-1212 - 20A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for industrial environments, the Square D FAL34020-1212 delivers 20A of thermal-magnetic protection across three poles. This F-Frame MCCB provides dependable overcurrent defense. Featuring a unit mount design, it integrates into Square D switchboards. For modern replacements, use the BDL36020 and add an external auxiliary switch. Rated 25kAIC at 240VAC, it includes a factory-installed 1A/1B auxiliary switch for remote monitoring and a Visi-Trip indicator for clear status checks.Specifications
| Brand | Square D |
|---|---|
| Part Number | FAL34020-1212 |
| Series | FAL |
| Amperage | 20A |
| 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 | 14-4 AWG (Cu), 12-4 AWG (Al) |
| Max Wire | 4 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, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Line and Load Lugs Included, Auxiliary Switch (Factory Installed) |
| Standards | CSA C22.2 No. 5, HACR Rated, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Non-Interchangeable Trip |
Product FAQs
6 answersWhat does the -1212 suffix mean on the Square D FAL34020-1212?
The -1212 suffix indicates that the circuit breaker comes with a factory-installed 1A/1B auxiliary switch. This provides one normally open (NO) and one normally closed (NC) contact for remote status signaling and monitoring.
What is the modern replacement for the legacy Square D FAL34020-1212?
The FAL series is a legacy F-Frame breaker. For modern upgrades or new installations, it is typically replaced by the Square D PowerPact H-Frame (such as the HDL34020) or PowerPact B-Frame series, though you will need to verify panel compatibility and auxiliary switch requirements.
How does the FAL34020-1212 mount into an electrical system?
This is a unit-mount, feed-thru circuit breaker. It installs using mechanical lugs on both the line and load sides for a rigid point-to-point wire connection, rather than plugging directly onto a busbar.
What equipment is the FAL34020-1212 compatible with?
This F-Frame breaker is designed for use in compatible legacy Square D enclosures, switchboards, and industrial control panels that accept unit-mount feed-thru breakers.
Are the AL50FA lugs on the FAL34020-1212 replaceable?
Yes, the AL50FA mechanical lugs are field-installable and replaceable. They accommodate 14 to 4 AWG copper or 12 to 4 AWG aluminum conductors and can be swapped if the lugs become damaged or if a different termination style is required.
Can the trip settings on the FAL34020-1212 be adjusted?
No, this breaker features a non-interchangeable thermal-magnetic trip unit with fixed long-time (thermal) and instantaneous (magnetic) trip settings.
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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!