Square D FC341001021 Molded Case Circuit Breaker
- 100A
- 3 Pole
- I-Line
Quantity
Square D FC341001021 - 100A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Part of the legacy F-Frame series, the Square D FC341001021 is a 3-pole, 100A molded case circuit breaker engineered for commercial and industrial applications. It mounts into Square D I-Line panelboards and switchboards, utilizing a plug-on I-Line connection for secure power distribution. This unit is replaced by the HJA36100SA when upgrading. Delivering extra-high interrupting capacity, it provides 65 kAIC at 480VAC and includes a factory-installed shunt trip for remote operation.Specifications
| Brand | Square D |
|---|---|
| Series | FC |
| 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 | FC |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 AWG (Cu) / 12 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included (AL100FA), Shunt Trip (Factory Installed) |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Extra High Interrupting Capacity |
Product FAQs
7 answersWhat does the 1021 suffix mean in the FC341001021 catalog number?
The 1021 suffix indicates that this circuit breaker includes a factory-installed 120/240VAC shunt trip.
What type of panelboards is the FC341001021 designed to fit?
This breaker features an I-Line style plug-in connection and is designed exclusively for use in Square D I-Line panelboards and switchboards.
Are the trip settings on the FC341001021 adjustable?
No, this breaker features a thermal-magnetic trip unit with fixed thermal (long-time) and fixed magnetic (instantaneous) settings.
Is the Square D FC frame still in active production?
The FC frame is a legacy molded case circuit breaker series. While it has been superseded by the PowerPact H-frame for new installations, exact-fit FC replacements are still used to maintain existing I-Line panelboards without requiring a complete system upgrade.
What wire sizes and materials are compatible with the terminals on the FC341001021?
The included lugs accept 14 to 1/0 AWG copper (Cu) wire or 12 to 1/0 AWG aluminum (Al) wire.
What is the purpose of the factory-installed shunt trip on this breaker?
The 120/240VAC shunt trip allows the breaker to be tripped remotely by an external electrical signal, which is commonly used for emergency shutdowns or automated control systems.
Is the FC341001021 rated for use in DC applications?
Yes, in addition to its AC ratings, this breaker is rated for 250VDC with an interrupting capacity of 10kA.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
- AMAlan M.ReviewingSquare D FC34050 - 50A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars5/25/21Breaker Order
All units were as described and sent quickly.
- JLJon L.ReviewingSquare D FC34030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/10/20SQ D Breaker
Needed an older breaker for a last minute job. Super Breakers had it in stock and it was in my hands in 2 days. Saved the day.