Square D FAL340401021 Molded Case Circuit Breaker
- 40A
- 3 Pole
- Unit Mount
Quantity
Square D FAL340401021 - 40A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Engineered for industrial applications, the Square D FAL340401021 is a 3-pole, 40A molded case circuit breaker from the legacy F-Frame family. It delivers reliable thermal-magnetic overcurrent protection for commercial power distribution systems. This unit mount breaker installs into Square D enclosures, switchboards, and panelboards. It serves as a drop-in replacement for older setups and can be upgraded to the BDL36040. Rated at 18kAIC at 480VAC, it includes a 120-240VAC shunt trip.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, Panelboards (Unit Mount) |
| 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 (Factory Installed), Line and Load Lugs Included |
| 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
6 answersWhat does the 1021 suffix indicate on the FAL340401021 catalog number?
The 1021 suffix designates a factory-installed 120/240VAC shunt trip. This allows the breaker to be opened remotely via a control voltage signal.
Where can I install the Square D FAL340401021 breaker?
As a unit-mount F-frame breaker, it is designed for installation in standard Square D enclosures, switchboards, and unit-mount panelboards. It is not compatible with I-Line plug-on panelboards.
What are the acceptable wire sizes for the FAL340401021 lugs?
The factory lugs accommodate 14 to 1/0 AWG copper conductors or 12 to 1/0 AWG aluminum conductors.
Is the FAL340401021 rated for direct current (DC) systems?
Yes, in addition to its AC ratings, this breaker is rated for 250VDC applications with a 10kAIC interrupting capacity.
Are the thermal and magnetic trip settings adjustable on this breaker?
No, the FAL340401021 features a fixed thermal and fixed magnetic trip unit providing standard long-time and instantaneous (LI) protection.
Does the FAL340401021 plug onto a panelboard bus?
No, this is a unit-mount breaker with feed-thru lug connections on both the line and load sides. It must be hardwired and screw-mounted to the enclosure or backpan.
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