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Square D FAL34040 Molded Case Circuit Breaker
- 40A
- 3 Pole
- Unit Mount
Square D
FAL34040
Molded Case Circuit Breaker
Brand
Square D
SKU
FAL34040
Quantity
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Square D FAL34040 - 40A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D FAL34040 - 40A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | FAL34040 |
| 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 |
| 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 (AL100FA) |
| Standards | CSA C22.2 No. 5, HACR Rated, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Quantity
Square D FAL34040 - 40A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | FAL34040-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 |
| 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 (AL100FA) |
| Standards | CSA C22.2 No. 5, HACR Rated, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
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Description
Designed to safeguard electrical systems, the FAL34040 is a 40A, 3-pole molded case circuit breaker. It provides robust thermal-magnetic protection for demanding commercial environments. This F-Frame breaker utilizes a unit-mount design for integration into Square D enclosures and switchboards. The PowerPact BDL36040 serves as the substitute for this legacy component. With an 18 kAIC rating at 480VAC, it handles substantial fault currents safely. The Visi-Trip indicator simplifies maintenance.Specifications
| Brand | Square D |
|---|---|
| Part Number | FAL34040 |
| 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 |
| 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 (AL100FA) |
| Standards | CSA C22.2 No. 5, HACR Rated, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
5 answersWhat is the modern replacement for the Square D FAL34040?
The FAL34040 is a legacy F-frame circuit breaker. Schneider Electric designates the PowerPact B-frame series, specifically the BDL36040, as the modern direct replacement for this unit.
Are mechanical lugs included with the FAL34040, and what is the required torque?
Yes, this unit-mount breaker typically utilizes the AL100FA mechanical lug kit. The required tightening torque for these lugs is 5.6 N.m (approximately 50 lb-in) for both copper and aluminum conductors.
Can the FAL34040 circuit breaker be reverse fed?
Yes. Because this thermal-magnetic breaker does not feature electronic trip units with directional requirements or factory Line and Load markings, it is suitable for reverse-feed applications.
Is the FAL34040 suitable for HVAC equipment?
Yes, this breaker is HACR rated, meaning it is certified for use with heating, air conditioning, and refrigeration equipment that require robust high-inrush current protection.
Which panelboards are compatible with the FAL34040?
The FAL34040 is a unit-mount circuit breaker designed for individual enclosures, OEM control panels, and legacy Square D switchboards. It is a lug-to-lug breaker and is not compatible with I-Line panelboards, which require specific plug-on FA catalog numbers.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 38 reviews.
Total 5 star reviews: 37 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Reviews Summary
Generated by AI from 31 most recent customer reviews
Last updated 7/31/25
Customers say these electrical components arrive quickly and match their specifications perfectly. Many reviews mention competitive pricing and reliable shipping times. Common feedback includes satisfaction with product condition and fit. While most orders arrive as expected, a few customers note shipping delays. Frequent comments address the accuracy of product descriptions and ease of ordering.
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Rating
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.