Square D FDA140203 Molded Case Circuit Breaker
- 20A
- 1 Pole
- I-Line
Square D
FDA140203
Molded Case Circuit Breaker
Brand
Square D
SKU
FDA140203
Quantity
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Square D FDA140203 - 20A 1 Pole Molded Case Circuit Breaker
Re-Certified
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Description
Engineered for commercial facilities, the FDA140203 is a 20A, 1-pole molded case circuit breaker from Square D. It provides dependable thermal-magnetic protection with fixed long-time and instantaneous (LI) trip functions. Designed for seamless integration, this breaker mounts into Square D I-Line panelboards. It features a B-phase plug-on line connection and comes equipped with load side lugs accepting 14-1/0 AWG wire. For modern panel upgrades, this unit is replaced by the BDA140203.Specifications
| Brand | Square D |
|---|---|
| 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 | 14-1/0 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 |
|---|---|
| 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
7 answersWhat panelboards are compatible with the FDA140203 circuit breaker?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It features a plug-in mounting style that connects directly to the I-Line bus.
What does the "3" suffix in the FDA140203 catalog number indicate?
The "3" at the end of the part number indicates that this 1-pole breaker is factory-configured for a B-phase connection on the I-Line panelboard bus.
What wire sizes are accepted by the lugs on the FDA140203?
The load-side lugs accept 14 AWG to 1/0 AWG copper or aluminum conductors.
Is the FDA140203 a legacy breaker, and what is the modern replacement?
Yes, the FDA series is a legacy F-frame molded case circuit breaker. The modern replacement is the Square D PowerPacT B-Frame, specifically catalog number BDA140203, which maintains the same 1-pole footprint and B-phase connection.
Can the FDA140203 be used in DC applications?
Yes, this thermal-magnetic circuit breaker is rated for use on 125VDC systems with an interrupting capacity of 10kA.
Does the FDA140203 require a separate mounting bracket for installation?
No, it features an integrated I-Line plug-in jaw that mounts directly to the panelboard bus, requiring no additional mounting hardware.
Are the trip settings on the FDA140203 adjustable?
No, this breaker features a non-interchangeable thermal-magnetic trip unit with fixed long-time and instantaneous trip functions.
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