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Square D FDA34020 Molded Case Circuit Breaker
- 20A
- 3 Pole
- I-Line
Square D
FDA34020
Molded Case Circuit Breaker
Brand
Square D
SKU
FDA34020
Quantity
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Square D FDA34020 - 20A 3 Pole Molded Case Circuit Breaker
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Square D FDA34020 - 20A 3 Pole Molded Case Circuit Breaker
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| Brand | Square D |
|---|---|
| Part Number | FDA34020 |
| Series | FDA |
| Amperage | 20A |
| 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 |
| 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 |
Quantity
Square D FDA34020 - 20A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | FDA34020 |
| Series | FDA |
| Amperage | 20A |
| 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 |
| 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 |
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Description
Operating at 20 amps, this three-phase molded case circuit breaker provides essential long-time and instantaneous protection for commercial facilities. The unit is SWD-rated, allowing it to serve as a switch for high-intensity discharge or fluorescent lighting circuits. Installation into Square D I-Line panelboards is streamlined via the integrated plug-on jaw mechanism. For maintenance operations, it replaces older FH34020 units and can be upgraded to the modern HDA36020 equivalent.Specifications
| Brand | Square D |
|---|---|
| Part Number | FDA34020 |
| Series | FDA |
| Amperage | 20A |
| 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 |
| 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 |
Product FAQs
6 answersWhat panelboards accept the FDA34020 circuit breaker?
This breaker is specifically designed for Square D I-Line panelboards and switchboards. It features a plug-on bus connection and will not fit in standard QO, NQ, or NF series panels.
What is the modern replacement for the legacy FDA34020?
The FDA frame is a legacy molded case circuit breaker. The direct modern upgrade is the Square D PowerPact H-frame series, specifically catalog number HDA36020, which maintains the 20A rating, 3-pole configuration, and I-Line mounting style.
What wire gauge is supported by the FDA34020 terminals?
The included load-side lugs accept either copper or aluminum conductors ranging from 14 AWG to 1/0 AWG.
Is the FDA34020 rated for DC applications?
Yes, this thermal magnetic breaker is rated for DC systems up to 250VDC, providing a 10kA interrupting capacity at that voltage.
How is the line-side connection made on the FDA34020?
The breaker uses the Square D I-Line plug-on mounting system. The line-side jaws press directly onto the panelboard bus assembly, eliminating the need for manual line-side wire terminations.
Are the trip settings adjustable on the FDA34020?
No, this breaker features a fixed thermal magnetic trip unit. Both the long-time (overload) and instantaneous (short-circuit) trip functions are factory set 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