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Square D FDA14020-3 Molded Case Circuit Breaker
- 20A
- 1 Pole
- I-Line
Square D
FDA14020-3
Molded Case Circuit Breaker
Brand
Square D
SKU
FDA14020-3
Quantity
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Square D FDA14020-3 - 20A 1 Pole Molded Case Circuit Breaker
Re-Certified
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Description
Built for robust commercial applications, the FDA14020-3 provides proven thermal-magnetic protection in a compact 1-pole footprint. This 20A Square D breaker features an I-Line mounting style with a dedicated Phase B connection, making panelboard integration seamless. Delivering an 18 kAIC interrupting rating at 277VAC, it ensures reliable defense against overloads and short circuits. It is an ideal maintenance replacement for legacy F-Frame systems, substituting the FH14020B.Specifications
| Brand | Square D |
|---|---|
| Part Number | FDA14020-3-R |
| Series | FDA |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | I-Line |
| Voltage | 120VAC, 277VAC, 125VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 120VAC, 18kA @ 277VAC, 10kA @ 125VDC |
| Frame Type | FDA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards |
| Wire Gauge | 14-4 AWG (Cu/Al) |
| Max Wire | 4 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included, Factory Phase Connection (Suffix -3) |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, SWD Rated |
Product FAQs
7 answersWhat panelboards accept the FDA14020-3 circuit breaker?
The FDA14020-3 is designed exclusively for use in Square D I-Line panelboards and switchboards. It utilizes an I-Line style plug-in connection to attach directly to the busbar.
What does the -3 suffix mean in the FDA14020-3 catalog number?
The -3 suffix indicates the breaker has a specific factory-installed phase connection for the I-Line bus. You must ensure this phase configuration aligns with the intended mounting position in your panelboard.
Can the FDA14020-3 replace older Square D F-Frame breakers?
Yes, this legacy FDA breaker is commonly used as a direct maintenance replacement for older 20A, 1-pole F-Frame I-Line breakers, such as the FA or FH series, provided the phase connection and interrupting ratings match your system requirements.
Is the FDA14020-3 suitable for direct current (DC) applications?
Yes, in addition to its AC ratings, this thermal-magnetic breaker is rated for use in DC circuits up to 125VDC, where it provides a 10kA interrupting capacity.
What wire sizes are compatible with the load lugs on this breaker?
The load-side lugs on the FDA14020-3 accept copper or aluminum (Cu/Al) conductors ranging from 14 AWG to 4 AWG.
Does the FDA14020-3 include GFCI or AFCI protection?
No, this is a standard thermal-magnetic molded case circuit breaker equipped with fixed long-time and instantaneous (LI) trip functions. It provides overload and short-circuit protection but does not offer ground fault or arc fault protection.
Do I need a separate mounting kit to install this breaker?
No separate mounting kit is required. The FDA14020-3 features an integrated I-Line plug-in jaw on the line side that mounts directly to the panelboard bus.
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