Square D FAL32040-1021 Molded Case Circuit Breaker
- 40A
- 3 Pole
- Unit Mount
Quantity
Square D FAL32040-1021 - 40A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Part of the legacy F-Frame series, the Square D FAL32040-1021 is a 3-pole, 40A MCCB. The 1021 suffix indicates a factory-installed 120-240VAC shunt trip for remote shutdown. This unit mount breaker installs into Square D enclosures and control panels. It serves as a replacement for older systems, while new builds use the PowerPact B-Frame (BDL36040). Rated 10 kAIC at 240VAC, it provides fixed thermal-magnetic (LI) protection and features a Visi-Trip indicator for quick fault identification.Specifications
| Brand | Square D |
|---|---|
| Part Number | FAL32040-1021 |
| Series | FAL |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| 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 | Auxiliary Switch, Alarm Switch, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (120-240VAC), Lugs |
| 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 |
Product FAQs
8 answersWhat is the modern replacement for the FAL32040-1021 circuit breaker?
The legacy F-Frame series has been replaced by the Square D PowerPact B-Frame series. For new installations or upgrades, the BDL36040 is the standard 40A, 3-pole replacement, though you will need to add a compatible shunt trip accessory to match the -1021 functionality.
What does the -1021 suffix mean on the FAL32040-1021?
The -1021 suffix indicates that this breaker includes a factory-installed 120-240VAC shunt trip. This allows the breaker to be tripped remotely for emergency shutdown or control purposes.
What types of enclosures and panels is the FAL32040-1021 compatible with?
This unit-mount breaker is designed for use in compatible Square D enclosures, switchboards, and control panels that accept F-Frame breakers. It is not designed for I-Line plug-on panelboards.
How does the FAL32040-1021 mount into a panel?
This is a unit-mount circuit breaker. It bolts directly to the mounting pan or backplate of compatible Square D enclosures and control panels, rather than plugging onto a bus like an I-Line breaker.
What size wire can be used with the lugs on the FAL32040-1021?
The factory lugs accept 14 to 1/0 AWG copper (Cu) wire or 12 to 1/0 AWG aluminum (Al) wire.
How is the shunt trip wired on the FAL32040-1021?
The factory-installed 120-240VAC shunt trip includes dedicated terminals or pigtail leads that exit the breaker. These must be wired in series with your remote control circuit, such as an emergency stop button or fire alarm relay, and a separate control power source.
Are the thermal and magnetic trip settings adjustable on the FAL32040-1021?
No, this breaker features fixed thermal and fixed magnetic trip settings. It provides standard long-time and instantaneous (LI) protection without field adjustability.
Does the FAL32040-1021 have a visual trip indicator?
Yes, it features the Square D Visi-Trip indicator. When the breaker trips due to an overcurrent or shunt trip activation, the handle moves to a center position and a red indicator appears, making it easy to identify a tripped breaker in a crowded panel.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 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!