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Square D FDA34100 Molded Case Circuit Breaker
- 100A
- 3 Pole
- I-Line
Square D
FDA34100
Molded Case Circuit Breaker
Brand
Square D
SKU
FDA34100
Quantity
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Square D FDA34100 - 100A 3 Pole Molded Case Circuit Breaker
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Description
A reliable solution for commercial systems, the Square D FDA34100 is a 100-amp, 3-pole molded case circuit breaker. It is part of the legacy F-Frame family, offering dependable overcurrent protection for demanding environments. This breaker is engineered to mount into Square D I-Line panelboards, ensuring a secure plug-on connection. While it remains a staple in many existing facilities, it is officially replaced by the HDA36100 model. It features a fixed LI trip and 18kAIC rating at 480V.Specifications
| Brand | Square D |
|---|---|
| Part Number | FDA34100 |
| Series | FDA |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 250VDC |
| Phase | 3 |
| 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, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Non-Interchangeable Trip |
Product FAQs
6 answersWhat type of panelboard is the FDA34100 compatible with?
This breaker is designed exclusively for use in Square D I-Line panelboards and switchboards. It will not fit standard QO, NQ, or NF series panels.
Is the FDA34100 still in active production, or is there a direct replacement?
The FDA34100 is part of the legacy F-Frame series. For modern upgrades or direct replacements, Square D replaced this model with the PowerPact H-Frame series, specifically catalog number HDA36100.
How does the I-Line connection type mount into the panel?
The I-Line mounting style features a plug-on jaw connection that snaps directly onto the panelboard busbar, secured by a mounting bracket. This allows for faster installation without requiring extensive hardwiring on the line side.
What does the "LI" trip function code indicate on this breaker?
The "LI" code means the breaker is equipped with a thermal-magnetic trip unit providing Long-Time (L) overload protection and Instantaneous (I) short-circuit protection. Both the thermal and magnetic trip settings are fixed on this model.
Are the load-side lugs included with the FDA34100?
Yes, this breaker comes standard with load-side lugs installed. They are rated for both copper and aluminum conductors ranging from 14 AWG to 1/0 AWG.
Does the FDA34100 feature a visual trip indicator?
Yes, the breaker handle moves to a center tripped position when a fault occurs. This provides a clear visual indication that the circuit has been interrupted and requires attention before resetting.
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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