Square D FDA140205 Molded Case Circuit Breaker
- 20A
- 1 Pole
- I-Line
Square D
FDA140205
Molded Case Circuit Breaker
Brand
Square D
SKU
FDA140205
Quantity
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Square D FDA140205 - 20A 1 Pole Molded Case Circuit Breaker
Re-Certified
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Description
The FDA140205 is a 1-pole, 20A molded case circuit breaker from Square D's legacy F-frame series. It delivers reliable long-time and instantaneous (LI) protection for commercial and industrial applications. Designed for Square D I-Line panelboards, this unit features a Phase C connection. It serves as an exact replacement for existing setups, having been superseded by the PowerPact BDA140205. Rated for 18kA at 277VAC, it utilizes fixed thermal-magnetic trip units.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 | 14-4 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 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
7 answersWhich panelboards accept the FDA140205 circuit breaker?
This breaker is specifically designed for Square D I-Line panelboards. It uses an I-Line style plug-in connection that engages directly with the panelboard bus.
What wire sizes and conductor materials are supported by the FDA140205 lugs?
The factory-installed lugs accommodate wire sizes from 14 AWG to 4 AWG. They are dual-rated for both copper (Cu) and aluminum (Al) conductors.
What protection types are provided by the LI trip unit in this breaker?
The LI designation indicates a thermal-magnetic trip unit with fixed Long-Time (L) protection for sustained overloads and fixed Instantaneous (I) protection for short circuits.
What are the maximum fault current interrupting capabilities of the FDA140205?
The breaker provides a maximum interrupting rating of 25kA at 120VAC or 240VAC, 18kA at 277VAC or 480VAC, and 10kA at 125VDC.
Can the FDA140205 be used in DC applications?
Yes, this breaker is rated for use in DC systems with a maximum voltage of 125VDC and an interrupting capacity of 10kA.
How does the FDA140205 mount into the panelboard?
It features an I-Line style plug-in connection. The breaker jaws clamp directly onto the I-Line bus stack, eliminating the need for separate bolt-on mounting hardware.
What breaker frame family does the FDA140205 belong to?
It is a legacy F-frame molded case circuit breaker. When replacing existing breakers, ensure your panel is configured to accept F-frame dimensions and I-Line plug-in connections.
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