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Square D FGA34070 Molded Case Circuit Breaker
- 70A
- 3 Pole
- I-Line
Square D
FGA34070
Molded Case Circuit Breaker
Brand
Square D
SKU
FGA34070
Quantity
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Square D FGA34070 - 70A 3 Pole Molded Case Circuit Breaker
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Description
Designed to support legacy electrical infrastructure, this 70-amp thermal-magnetic MCCB delivers reliable overcurrent and short-circuit protection. It connects into standard Square D I-Line panelboards using a 3-inch phase footprint. This makes it ideal for maintaining existing enclosures where the modern 4.5-inch HGA36070 substitute will not physically fit. The 3-pole unit includes factory-installed load side lugs and carries a 65kAIC rating at 240VAC for robust fault handling.Specifications
| Brand | Square D |
|---|---|
| Part Number | FGA34070 |
| Series | FGA |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480Y/277VAC |
| Frame Type | FGA |
|---|---|
| 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 | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
5 answersWhat type of panelboard is the FGA34070 designed for?
It is designed exclusively for Square D I-Line panelboards. It features an I-Line style plug-in connection on the line side and will not fit standard NQ, NF, or QO load centers.
Is the FGA34070 a current or legacy circuit breaker?
The FGA frame is a legacy molded case circuit breaker. While it is often replaced by the modern PowerPact H-frame series (such as the HGA36070), the FGA34070 maintains a narrower 3-inch phase footprint. This makes it ideal for maintaining existing enclosures where the wider 4.5-inch H-frame substitute will not physically fit.
What wire sizes are accepted by the load lugs on the FGA34070?
The factory-installed load side lugs accept 14 AWG to 1/0 AWG wire. Both copper and aluminum (Cu/Al) conductors are supported.
What does the G in the FGA34070 catalog number indicate?
The G designates the specific interrupting rating tier within the Square D F-frame family. For this 70A breaker, the G-tier provides a 65kAIC rating at 240VAC and a 35kAIC rating at 480VAC.
How does the trip unit on the FGA34070 operate?
It utilizes a thermal-magnetic trip unit with fixed thermal and fixed magnetic settings. This provides standard long-time (L) and instantaneous (I) protection against overloads and short circuits.
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