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Square D BDA34045Y Molded Case Circuit Breaker
- 45A
- 3 Pole
- I-Line
Square D
BDA34045Y
Molded Case Circuit Breaker
Brand
Square D
SKU
BDA34045Y
Quantity
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Square D BDA34045Y - 45A 3 Pole Molded Case Circuit Breaker
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Description
Delivering reliable thermal-magnetic circuit protection, the 45A BDA34045Y is a 3-pole MCCB built for demanding industrial applications. It features fixed long-time and instantaneous trip functions to handle overloads effectively. Designed for seamless integration, it installs into Square D I-Line panelboards and switchboards. This B-Frame model replaces the older FA34045. With an 18kAIC rating at 480Y/277V, it includes a Visi-Trip indicator and is HACR rated for HVAC equipment.Specifications
| Brand | Square D |
|---|---|
| Part Number | BDA34045Y |
| Series | BDA |
| Amperage | 45A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 208Y/120VAC, 240VAC, 480Y/277VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 208Y/120VAC, 25kA @ 240VAC, 18kA @ 480Y/277VAC, 10kA @ 250VDC |
| Frame Type | BDA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Switchboards |
| Wire Gauge | 14-2/0 AWG (Al/Cu) |
| Max Wire | 2/0 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, Rotary Handle, Motor Operator |
|---|---|
| Accessories | None included |
| Standards | CSA C22.2 No. 5, EN/IEC 60947-2, GB 14048.2, NEMA AB 1, NMX J-266, UL 489 |
| Approval | CCC, CE, CSA, EAC, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Visual Trip Indicator, Reverse Feed |
Product FAQs
7 answersWhat are the fixed magnetic trip settings for the BDA34045Y?
The BDA34045Y features a fixed thermal-magnetic trip unit with a hold current of 400A and a trip current of 600A.
What does the Y suffix indicate in the BDA34045Y catalog number?
In Square D PowerPacT B-Frame I-Line circuit breakers, the Y suffix designates an ABC phase connection.
Can the PowerPacT BDA34045Y replace older Square D F-Frame breakers?
Yes, the PowerPacT B-Frame series is the designated replacement for legacy F-Frame circuit breakers, such as FA and FH models. It maintains the same I-Line mounting footprint to simplify retrofits and panel upgrades.
How is the BDA34045Y wired in an I-Line panel?
This breaker features a shrouded I-Line plug-on jaw for the line side connection directly to the panelboard bus. The load side is equipped with mechanical lugs that accept 14 to 2/0 AWG aluminum or copper wire.
How much panel space does the BDA34045Y require in an I-Line panelboard?
As a 3-pole PowerPacT B-Frame circuit breaker, it requires 4.5 inches of I-Line mounting space.
Is the BDA34045Y 100% rated for continuous current?
No, this breaker has a standard continuous current rating of 80%.
Does the BDA34045Y include a manual testing mechanism?
Yes, all PowerPacT B-Frame circuit breakers include an integral push-to-trip button on the front cover, allowing you to manually trip the breaker to verify the mechanical operation of the trip mechanism.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 9 reviews.
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Rating
9 reviews
- KFKevin F.Verified BuyerReviewingSquare D BDA36100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/2/26Good price, fast delivery
My local supplier was backordered one this item for a few months, Superbreakers beat the price and delivered it quickly.
- AGAlan G.Verified BuyerReviewingSquare D BDA36020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/10/26Excellent Value
Excellent Value and fast shipping. SuperBreakers delivered!!
- MMMike M.Verified BuyerReviewingSquare D BDA36050 - 50A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars2/25/26Review
Super Breakers had the breakers I needed in stock at a fair price and shipped & delivered in an expedited fashion. They are my go-to guys for hard to find breakers.
Mike @ Frey Electric
- SMSergio M.Verified BuyerReviewingSquare D BDA36040 - 40A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/19/26Installed & working
Ordered this from SuperBreakers when local vendors were quoting me 25%+.
So I got a refurbished version of this breaker.
It is installed and working.
Also, service was great.
Thank you SuperBreakers!
- GOGeorge O.ReviewingSquare D BDA36080 - 80A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars8/18/22Just received it. Packaging was
Just received it. Packaging was good. Product seems to be exactly as described. Installing soon.