Square D FC340401212 Molded Case Circuit Breaker
- 40A
- 3 Pole
- I-Line
Square D
FC340401212
Molded Case Circuit Breaker
Brand
Square D
SKU
FC340401212
Quantity
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Square D FC340401212 - 40A 3 Pole Molded Case Circuit Breaker
New
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Description
Built for advanced control applications, this 40-amp F-frame breaker includes a factory-installed 1A/1B auxiliary switch for status signaling. The unit mounts into Square D I-Line panelboards and switchboards, offering robust thermal-magnetic protection for industrial systems. Delivering a 65kAIC rating at 480VAC, it ensures high-capacity fault interruption. Facilities upgrading to current generation hardware can substitute the PowerPact HJA36040AE.Specifications
| Brand | Square D |
|---|---|
| Part Number | FC340401212 |
| Series | FC |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards and Switchboards |
| 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 | Shunt Trip, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included, Auxiliary Switch (Factory Installed) |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated, High Interrupting Capacity |
Product FAQs
6 answersIs the Square D FC340401212 still the current model for this application?
The FC series is a legacy F-frame circuit breaker. While it remains available for direct replacements in existing I-Line panels, Square D has transitioned to the PowerPact H-frame series for new installations.
What does the 1212 suffix indicate on the FC340401212 catalog number?
The 1212 suffix designates that this breaker is factory-equipped with an auxiliary switch. This switch provides 1A/1B (one normally open and one normally closed) contacts for remote status signaling.
Which panelboards are compatible with the FC340401212 circuit breaker?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It features a plug-on line side connection that mounts directly to the I-Line bus assembly.
How are the line and load connections configured on this breaker?
The line side utilizes a plug-on I-Line connection that engages directly with the panelboard bus. The load side is equipped with mechanical lugs that accept 14 to 1/0 AWG copper or 12 to 1/0 AWG aluminum wire.
Are the thermal and magnetic trip points adjustable on this breaker?
No, the FC340401212 features a fixed thermal-magnetic trip unit. Both the Long-Time (thermal) overload and Instantaneous (magnetic) short-circuit trip settings are fixed and non-adjustable.
Can I use aluminum wire with the load lugs on this breaker?
Yes, the factory-installed load lugs are dual-rated for both copper and aluminum conductors. They accept 14 to 1/0 AWG copper or 12 to 1/0 AWG aluminum wire.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
Total 5 star reviews: 2 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
2 reviews
- AMAlan M.ReviewingSquare D FC34050 - 50A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars5/25/21Breaker Order
All units were as described and sent quickly.
- JLJon L.ReviewingSquare D FC34030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/10/20SQ D Breaker
Needed an older breaker for a last minute job. Super Breakers had it in stock and it was in my hands in 2 days. Saved the day.