Square D FA34020-1021 Molded Case Circuit Breaker
- 20A
- 3 Pole
- I-Line
Square D
FA34020-1021
Molded Case Circuit Breaker
Brand
Square D
SKU
FA34020-1021
Quantity
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Square D FA34020-1021 - 20A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial and industrial applications, the Square D FA34020-1021 is a 3-pole thermal-magnetic molded case circuit breaker. It is designed to install into Square D I-Line panelboards and switchboards, providing reliable overcurrent and short-circuit protection. As a legacy F-Frame breaker, it is commonly replaced by the newer HDA36020SA model. Rated for 18 kAIC at 480VAC, this unit includes a factory-installed 120-240VAC shunt trip for remote tripping capabilities.Specifications
| Brand | Square D |
|---|---|
| Series | FA |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards |
| 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 | Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Shunt Trip |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Non-Interchangeable Trip |
Product FAQs
6 answersWhat does the "-1021" suffix indicate on the FA34020-1021 circuit breaker?
The "-1021" suffix indicates that this breaker includes a factory-installed 120/240VAC shunt trip mechanism. This allows the circuit breaker to be tripped remotely from a separate voltage source for emergency shutdowns or control system integration.
What is the modern replacement for the legacy Square D FA34020-1021?
The legacy F-Frame FA34020-1021 is replaced by the modern PowerPact H-Frame HDA36020 circuit breaker. To replicate the 120/240VAC remote trip functionality, it must be combined with an S29386 shunt trip accessory.
Which panelboards are compatible with the FA34020-1021 circuit breaker?
This breaker features an I-Line style plug-in connection and is designed exclusively for use in Square D I-Line panelboards and switchboards. It is not compatible with standard unit-mount or load center applications.
What wire sizes and materials are accepted by the lugs on the FA34020-1021?
The standard load-side lugs on this breaker accept 14 AWG to 1/0 AWG copper or aluminum (Cu/Al) wire.
What type of trip unit is installed in the FA34020-1021?
This breaker features a non-interchangeable thermal-magnetic trip unit with fixed thermal and fixed magnetic settings. It provides standard long-time and instantaneous (LI) overcurrent protection.
Can the FA34020-1021 be used in DC applications?
Yes, in addition to its AC ratings, this breaker is rated for 250VDC applications with an interrupting capacity of 10kAIC.
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