Square D FAL340401042 Molded Case Circuit Breaker
- 40A
- 3 Pole
- Unit Mount
Quantity
Square D FAL340401042 - 40A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D FAL340401042 - 40A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | FAL340401042-R |
| Series | FAL |
| Amperage | 40A |
| 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, Motor Control Centers |
| 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 | Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (24V AC/DC), Lugs (AL100FA) |
| Standards | UL 489, CSA C22.2 No. 5, NEMA AB 1, IEC 60947-2, HACR Rated |
| Approval | CSA, UL, IEC |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Quantity
Square D FAL340401042 - 40A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Series | FAL |
| Amperage | 40A |
| 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, Motor Control Centers |
| 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 | Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (24V AC/DC), Lugs (AL100FA) |
| Standards | UL 489, CSA C22.2 No. 5, NEMA AB 1, IEC 60947-2, HACR Rated |
| Approval | CSA, UL, IEC |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Description
Built for demanding commercial environments, the Square D FAL340401042 is a 3-pole, 40A molded case circuit breaker. It provides dependable long-time and instantaneous trip functions for industrial facilities. Designed for unit mounting, this F-Frame breaker integrates seamlessly into Square D enclosures, switchboards, and motor control centers. It is officially replaced by the BDL36040SK model. Featuring a 24V AC/DC shunt trip, it delivers an 18kAIC interrupt rating at 480VAC.Specifications
| Brand | Square D |
|---|---|
| Series | FAL |
| Amperage | 40A |
| 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, Motor Control Centers |
| 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 | Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (24V AC/DC), Lugs (AL100FA) |
| Standards | UL 489, CSA C22.2 No. 5, NEMA AB 1, IEC 60947-2, HACR Rated |
| Approval | CSA, UL, IEC |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
7 answersWhat does the 1042 suffix indicate on the FAL340401042 breaker?
The 1042 suffix signifies that this breaker includes a factory-installed 24V AC/DC shunt trip. This accessory allows the breaker to be tripped remotely via an external control signal.
What is the modern replacement for this legacy Square D F-Frame breaker?
The legacy FAL series has been superseded by the Square D PowerPact B-Frame (such as the BDL36040) and PowerPact H-Frame series. Upgrading to a PowerPact breaker will require a separate shunt trip accessory to match this specific configuration and may require mounting adaptations.
What wire sizes are accepted by the lugs on the FAL340401042?
The standard lugs accept 14 to 1/0 AWG copper wire or 12 to 1/0 AWG aluminum wire.
How is the FAL340401042 installed in an electrical system?
This is a unit-mount, feed-thru circuit breaker. It bolts directly to the mounting surface or enclosure backpan and requires hardwired connections at both the line and load terminals, rather than plugging onto a panelboard busbar.
Can the FAL340401042 be used in DC applications?
Yes, this thermal-magnetic breaker is rated for use in DC systems up to 250VDC, providing an interrupting capacity of 10 kAIC at that voltage.
What does the LI trip function code mean on this breaker?
The LI designation indicates that the thermal-magnetic trip unit provides Long-Time (L) protection for overloads and Instantaneous (I) protection for short circuits. Both the thermal and magnetic trip settings are fixed on this model.
What equipment is compatible with the FAL340401042 circuit breaker?
This F-Frame breaker is designed for unit mounting in compatible Square D enclosures, switchboards, and motor control centers.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 38 reviews.
- 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!
- FGFrancis G.Verified BuyerReviewingSquare D FAL32100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/27/26YMCA
EXCELLENT SERVICE.