Square D FJA160203 Circuit Breaker
- 20A
- 1 Pole
- I-Line
Quantity
Square D FJA160203 1 Pole Circuit Breaker
New
Quantity
Description
Square D FJA160203 1 Pole Circuit Breaker
The Square D FJA160203 is a 1 Pole molded case circuit breaker with a current rating of 20 Amps and a voltage rating of 347V. It has an I-Line mounting type.
Specifications
| Brand | Square D |
|---|---|
| Series | FJA |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | I-Line |
| Voltage | 120VAC, 277VAC, 347VAC |
| Phase | 1 |
| AIC Rating | 100kA @ 120VAC, 65kA @ 277VAC, 25kA @ 347VAC |
| Frame Type | F |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
Product FAQs
7 answersWhat type of panelboard accepts the FJA160203 circuit breaker?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It features a stab-in connection that mounts directly to the I-Line bus system and cannot be used in standard bolt-on or QO load centers.
What is the interrupting capacity (AIC) for the FJA160203?
The FJA160203 features an interrupting rating of 25 kA at 347V AC.
What applications typically require the 347V rating on this 1-pole breaker?
The 347V rating is designed for 347/600V wye distribution systems. These systems are standard in Canadian commercial and industrial facilities, primarily for lighting and dedicated equipment circuits.
How does the I-Line mounting system work for the FJA160203?
The breaker uses a proprietary plug-on stab connection that slides and locks onto the I-Line bus bars. This eliminates the need to torque individual line-side bolts, speeding up installation and replacement in commercial enclosures.
Why is this 1-pole breaker listed with a 3-phase specification?
While the FJA160203 is a 1-pole breaker that protects a single circuit, it is designed to install into a 3-phase I-Line panelboard. The breaker is factory-configured to connect to one specific phase on the panel's bus system.
Is the FJA160203 still manufactured by Schneider Electric?
No, Schneider Electric officially discontinued the FJA160203 in January 2021. It is considered a legacy F-frame breaker, though exact replacements are still sourced to maintain existing I-Line panelboards.
What type of trip unit is installed in the FJA160203?
This breaker utilizes a fixed thermal-magnetic trip unit. It provides standard long-time and instantaneous (LI) protection to clear overloads and short circuits safely.
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