Schneider Electric FJA34030 Molded Case Circuit Breaker
- 30A
- 3 Pole
- I-Line
Schneider Electric
FJA34030
Molded Case Circuit Breaker
Brand
Schneider Electric
SKU
FJA34030
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Schneider Electric FJA34030 - 30A 3 Pole Molded Case Circuit Breaker
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Description
Belonging to the legacy F-frame family, this 30A molded case circuit breaker delivers robust long-time and instantaneous (LI) protection for commercial and industrial electrical systems. The unit mounts into Square D I-Line panelboards and switchboards, utilizing a plug-on design that simplifies phase connections. It serves as an exact match for existing setups, though it has been superseded by the HJA36030 in newer installations.Specifications
| Brand | Schneider Electric |
|---|---|
| Series | FJA |
| Amperage | 30A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| Wire Gauge | 14-4 AWG (Cu), 12-4 AWG (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, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
6 answersWhat panelboards are compatible with the FJA34030 circuit breaker?
This breaker is specifically designed for use in Square D I-Line panelboards and I-Line switchboards. It will not fit in standard QO, Homeline, or NQ/NF series panels.
How does the I-Line connection on the FJA34030 work?
The breaker features a plug-on phase connection that snaps directly onto the I-Line bus assembly. A mounting bracket is then screwed into the backpan to secure the breaker in place, allowing for rapid installation and replacement.
Can the FJA34030 replace older Square D F-frame breakers?
Yes, it is a direct physical replacement for older 3-pole, 30A I-Line F-frame breakers like the FA34030 and FH34030. Because the FJA provides a higher 65kAIC rating at 480V, it safely upgrades systems that originally used standard or high-interrupting FA and FH breakers.
What does the "J" in the FJA34030 catalog number indicate?
In Square D legacy F-frame nomenclature, the "J" designates the interrupting rating tier. The FJA series provides a 65kAIC rating at 480VAC, which is higher than the standard FA (18kAIC) and FH (25kAIC) models.
How does the trip mechanism function on the FJA34030?
This breaker utilizes a thermal-magnetic trip unit. The fixed thermal element provides long-time protection against sustained overloads, while the instantaneous magnetic element reacts immediately to clear severe short circuits.
Can the FJA34030 be used on a 240V system?
Yes. While it is rated for up to 480Y/277VAC, it is fully compatible with 240VAC systems. When applied at 240V, the breaker provides an increased interrupting rating of 100kAIC.
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