Square D FDA34045 Molded Case Circuit Breaker
- 45A
- 3 Pole
- I-Line
Quantity
Square D FDA34045 - 45A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Quantity
Square D FDA34045 - 45A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | FDA34045 |
| Series | FDA |
| Amperage | 45A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480Y/277VAC, 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 | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated, Non-Interchangeable Trip |
Quantity
Square D FDA34045 - 45A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Series | FDA |
| Amperage | 45A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480Y/277VAC, 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 | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated, Non-Interchangeable Trip |
Description
Built for heavy-duty commercial applications, the FDA34045 delivers robust thermal-magnetic protection. This 45A, three-pole molded case circuit breaker utilizes fixed long-time and instantaneous (LI) trip functions to safeguard electrical systems. The breaker mounts into Square D I-Line panelboards, offering a secure plug-on connection. It replaces aging F-Frame units and can be substituted with the newer HDA36045. Featuring an 18kAIC rating at 480VAC, it includes a Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Series | FDA |
| Amperage | 45A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480Y/277VAC, 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 | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated, Non-Interchangeable Trip |
Product FAQs
5 answersWhat type of panelboards accept the FDA34045 circuit breaker?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It utilizes a plug-on I-Line connection that mounts directly to the bus assembly.
Is the Square D FDA34045 obsolete, and what is the recommended replacement?
Yes, the legacy F-Frame FDA34045 is obsolete. For modern upgrades or replacements in an I-Line panel, the PowerPact H-Frame HDA36045 is the direct equivalent.
Is the FDA34045 suitable for DC applications?
Yes, this breaker is certified for use in DC systems up to 250VDC. It provides a 10kA interrupting rating for direct current applications, making it suitable for specific industrial or commercial DC loads.
Can I adjust the trip thresholds on the FDA34045?
No, this breaker is built with fixed thermal and fixed magnetic trip elements. The long-time and instantaneous trip functions are factory set and cannot be adjusted in the field.
Does the FDA34045 require a separate mounting hardware kit?
No, as an I-Line style plug-in breaker, it features integrated jaws that mount directly onto the panelboard bus assembly, eliminating the need for separate mounting kits or cable connections to the bus.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
- DNDan N.Verified BuyerReviewingSquare D FDA34030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars5/8/26Used Breaker
Shipped and arrived timely, well packaged, was clean and in good used condition. Outside putting it into service all has a appears to be good.
- EBErich B.Verified BuyerReviewingSquare D FDA34020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars10/18/25Great service
Always super easy to deal with