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Square D EDB34045SA Miniature Circuit Breaker
- 45A
- 3 Pole
- Bolt-On
Square D
EDB34045SA
Miniature Circuit Breaker
Brand
Square D
SKU
EDB34045SA
Quantity
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Square D EDB34045SA - 45A 3 Pole Miniature Circuit Breaker
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Square D EDB34045SA - 45A 3 Pole Miniature Circuit Breaker
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| Brand | Square D |
|---|---|
| Part Number | EDB34045SA |
| Series | EDB |
| Amperage | 45A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 277VAC, 480Y/277VAC, 120/240VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 120VAC, 25kA @ 240VAC, 18kA @ 277VAC, 18kA @ 480Y/277VAC, 25kA @ 120/240VAC |
| Frame Type | EDB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D NF Panelboards |
| Wire Gauge | 14-2/0 AWG (Cu), 12-2/0 AWG (Al) |
| Max Wire | 2/0 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 |
| Available Options | Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip 120VAC |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, cULus, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, Visual Trip Indicator |
Quantity
Square D EDB34045SA - 45A 3 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Series | EDB |
| Amperage | 45A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 277VAC, 480Y/277VAC, 120/240VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 120VAC, 25kA @ 240VAC, 18kA @ 277VAC, 18kA @ 480Y/277VAC, 25kA @ 120/240VAC |
| Frame Type | EDB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D NF Panelboards |
| Wire Gauge | 14-2/0 AWG (Cu), 12-2/0 AWG (Al) |
| Max Wire | 2/0 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 |
| Available Options | Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip 120VAC |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, cULus, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, Visual Trip Indicator |
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Description
Featuring an integrated 120VAC shunt trip mechanism, this 45-amp miniature circuit breaker enables remote power disconnection for enhanced facility safety. The three-pole E-Frame assembly requires four pole spaces when mounting into Square D NF series panelboards. It delivers 18 kAIC interrupting capacity at 480Y/277VAC and includes standard thermal-magnetic protection, making it ideal for commercial applications requiring automated or emergency shutdown capabilities.Specifications
| Brand | Square D |
|---|---|
| Series | EDB |
| Amperage | 45A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 277VAC, 480Y/277VAC, 120/240VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 120VAC, 25kA @ 240VAC, 18kA @ 277VAC, 18kA @ 480Y/277VAC, 25kA @ 120/240VAC |
| Frame Type | EDB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D NF Panelboards |
| Wire Gauge | 14-2/0 AWG (Cu), 12-2/0 AWG (Al) |
| Max Wire | 2/0 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 |
| Available Options | Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip 120VAC |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, cULus, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, Visual Trip Indicator |
Product FAQs
8 answersWhich panelboards are compatible with the Square D EDB34045SA circuit breaker?
The EDB34045SA is an E-Frame breaker designed specifically for use in Square D NF series panelboards. It features a bolt-on mounting connection and cannot be used in NQ or I-Line panels.
Can the EDB34045SA be used in Square D NQ panelboards?
No. E-Frame breakers like the EDB34045SA are designed exclusively for Square D NF panelboards, which support up to 480Y/277VAC. NQ panelboards are designed for QO and QOB series breakers and are limited to 240VAC maximum.
What does the SA suffix mean on the EDB34045SA catalog number?
The SA suffix indicates that the breaker includes a factory-installed 120VAC shunt trip accessory. This allows the breaker to be tripped remotely by external control systems, such as fire alarms or emergency stop buttons.
How many pole spaces does the EDB34045SA require in a panelboard?
Although it is a 3-pole breaker, the EDB34045SA requires four total pole spaces for installation. The SA suffix indicates a factory-installed shunt trip, which occupies one additional pole space in the panel.
Can I field-install a shunt trip on a standard EDB34045 breaker instead of buying the EDB34045SA?
No, shunt trips for Square D E-Frame breakers are not field-installable. The EDB34045SA comes with the 120VAC shunt trip factory-installed and tested.
How is the shunt trip on the EDB34045SA wired?
The factory-installed shunt trip features its own set of control wire terminals. When a 120VAC control signal is applied to these terminals (from a fire alarm relay, emergency stop, or control system), the internal coil energizes and mechanically trips the breaker.
Does the EDB34045SA feature a visual trip indicator?
Yes, Square D E-Frame breakers like the EDB34045SA feature Visi-Trip technology. When the breaker trips due to an overload or short circuit, the handle snaps to a midpoint position and a highly visible red indicator appears, allowing for quick fault identification in the panel.
Are there higher interrupting capacity alternatives to the EDB34045SA?
Yes. If your application requires a higher fault current rating, you can use the EGB34045SA (rated 35kA at 480Y/277VAC) or the EJB34045SA (rated 65kA at 480Y/277VAC). Both share the same physical footprint and NF panelboard compatibility.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 111 reviews.
Total 5 star reviews: 109 Total 4 star reviews: 2 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Reviews Summary
Generated by AI from 87 most recent customer reviews
Last updated 8/7/25
Customers say these circuit breakers arrive quickly and function as expected. Many reviews mention competitive pricing and reliable shipping. The ordering process receives praise for its simplicity, with users noting the website is easy to navigate. Frequent comments address product availability and proper packaging. While some note receiving older stock items, users consistently report the breakers work effectively.
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Rating
111 reviews
- COChris O.Verified BuyerReviewingSquare D EDB34125 - 125A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/4/26Fast and easy
Locating the product, checking out and delivery were top notch!
- JDJohn D.Verified BuyerReviewingSquare D EDB14020 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/16/26Great place
My rep has been very responsive and helpful. He always gives me a good deal also
- DHDave H.Verified BuyerReviewingSquare D EDB34020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/6/26Brfeaker
good service and quick ship
- RPRonica P.Verified BuyerReviewingSquare D EDB34015 - 15A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars6/30/26Great Experience from Start to Finish
Great experience! My order arrived on time and everything was exactly as expected. The items were packaged securely, and everything arrived in perfect condition. I appreciate the care taken with packaging and the prompt delivery. I would definitely order from them again!
- TBTheresa B.Verified BuyerReviewingSquare D EDB34015 - 15A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars6/17/26Works as expected
Breaker worked as expected. Price was good and shipping and delivery were expedient. No complaints