Square D FDA24100 Molded Case Circuit Breaker
- 100A
- 2 Pole
- I-Line
Square D
FDA24100
Molded Case Circuit Breaker
Brand
Square D
SKU
FDA24100
Quantity
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Square D FDA24100 - 100A 2 Pole Molded Case Circuit Breaker
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Description
A cornerstone of legacy power distribution, the Square D FDA24100 is a 2-pole F-Frame molded case circuit breaker. It handles the rigorous demands of industrial systems requiring 480V capabilities. This unit mounts into Square D I-Line panelboards using a robust plug-on connection. It serves as a functional replacement for the FH24100 and transitions to the HDA26100 for upgrades. The breaker provides an 18kAIC capacity, precise LI protection, HACR rating, and the convenient Visi-Trip flag.Specifications
| Brand | Square D |
|---|---|
| Series | FDA |
| Amperage | 100A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480Y/277VAC, 18kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | FDA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards |
| Wire Gauge | 14-1/0 AWG (Cu/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, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
Product FAQs
6 answersWhat type of panelboards is the FDA24100 compatible with?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It features a plug-on jaw connection that mounts directly to the I-Line bus system.
How does the I-Line connection work on the FDA24100?
The breaker uses a blow-on, plug-on jaw connection that grips the busbar tightly during short circuits. It is secured to the panel backpan using a retaining screw that fits into a round hole, which is characteristic of legacy F-frame breakers.
Is the FDA24100 suitable for direct current (DC) systems?
Yes, in addition to its standard AC ratings, this thermal-magnetic breaker is UL listed for DC applications up to 250VDC, providing a 10kAIC interrupting capacity for DC circuits.
Is the Square D FDA24100 still in active production?
The FDA frame is a legacy F-frame circuit breaker and is no longer in active production. The modern equivalent for new installations is the Square D PowerPact H-frame series, though FDA breakers are still widely sourced to maintain existing I-Line panels.
How does the FDA frame compare to FGA or FJA breakers?
The difference lies in the interrupting capacity. The FDA24100 is a standard interrupting breaker rated at 18kAIC at 480V. The FGA and FJA models are the high-interrupting and extra-high-interrupting versions of the same frame size, designed for systems with higher available fault currents.
Are the thermal and magnetic trip settings adjustable on this breaker?
No, the FDA24100 features fixed thermal and fixed magnetic trip elements. They are factory-calibrated for consistent protection against overloads and short circuits and cannot be adjusted in the field.
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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
- DNDan N.Verified BuyerReviewingSquare D FDA34030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars5/8/26Used Breaker
Shipped and arrived timely, well packaged, was clean and in good used condition. Outside putting it into service all has a appears to be good.
- EBErich B.Verified BuyerReviewingSquare D FDA34020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars10/18/25Great service
Always super easy to deal with