Square D FJA34100 Molded Case Circuit Breaker
- 100A
- 3 Pole
- I-Line
Quantity
Square D FJA34100 - 100A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D FJA34100 - 100A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | FJA34100 |
| Series | FJA |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | FJA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | UL 489, CSA C22.2 No. 5, NEMA AB 1, IEC 60947-2 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity |
Quantity
Square D FJA34100 - 100A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | FJA34100-R |
| Series | FJA |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | FJA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | UL 489, CSA C22.2 No. 5, NEMA AB 1, IEC 60947-2 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity |
Description
Built for heavy-duty industrial environments, the Square D FJA34100 is a 3-pole, 100A molded case circuit breaker. It utilizes thermal-magnetic trip technology to deliver dependable long-time and instantaneous (LI) circuit protection. Designed specifically for Square D I-Line panelboards and switchboards, this legacy F-frame unit features a high interrupting capacity of 65kAIC at 480VAC. For modern upgrades or replacements, this model is superseded by the PowerPact HJA36100.Specifications
| Brand | Square D |
|---|---|
| Part Number | FJA34100 |
| Series | FJA |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | FJA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | UL 489, CSA C22.2 No. 5, NEMA AB 1, IEC 60947-2 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity |
Product FAQs
7 answersWhat type of panelboards are compatible with the FJA34100?
This breaker is designed exclusively for use in Square D I-Line panelboards and switchboards. It features an I-Line style plug-in connection that mounts directly to the panel bus assembly.
Is the Square D FJA34100 still actively manufactured?
The FJA34100 is a legacy F-frame molded case circuit breaker that has been discontinued by Schneider Electric. It has been superseded by the newer PowerPact H-frame series, such as the HJA36100, for I-Line panelboard applications.
What wire sizes and materials are accepted by the lugs on this breaker?
The standard lugs on the FJA34100 accept wire gauges from 14 AWG up to 1/0 AWG. The terminals are rated for use with either copper (Cu) or aluminum (Al) conductors.
What does the J in the FJA frame designation indicate?
In Square D legacy F-frame nomenclature, the J indicates the interrupting capacity level. For this breaker, it signifies a high interrupting rating of 65kA at 480V AC and 100kA at 240V AC.
How does the I-Line style plug-in connection mount to the panel?
I-Line breakers feature plug-on phase jaws that press directly onto the panelboard bus stack, while the opposite end of the breaker is secured to the panel backpan with a mounting bracket and screw. This allows for rapid, modular installation.
Can the FJA34100 be used in DC electrical systems?
Yes, in addition to its AC ratings, this thermal-magnetic breaker is rated for use in DC applications up to 250V DC, with a DC interrupting rating of 10kA.
Are the trip settings on the FJA34100 adjustable?
No, this breaker features a fixed thermal-magnetic trip unit. Both the long-time (thermal overload) and instantaneous (magnetic short-circuit) trip functions are factory-set and non-adjustable.
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