Square D BGA24040Y2 Molded Case Circuit Breaker
- 40A
- 2 Pole
- I-Line
Quantity
Square D BGA24040Y2 - 40A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
Square D BGA24040Y2 PowerPacT molded case circuit breaker is rated 40A, 240VAC or 480Y/277VAC, with 2 poles and 1 phase. UL 489 interrupting ratings are 65kA at 208Y/120VAC and 240VAC, 35kA at 480Y/277VAC, and 20kA at 250VDC. It has a thermal magnetic LI trip with fixed thermal and magnetic settings, a B-Frame, I-Line mounting, load side lug terminals and standard protection. The Cu/Al conductor range is 14-2/0 AWG. Dimensions are 5.4 in high, 2.1 in wide and 3.5 in deep. Approvals include CE, UL, EN, IEC, CCC, EAC, CSA, NOM, NEMA, GB and NMX.Specifications
| Brand | Square D |
|---|---|
| Part Number | BGA24040Y2 |
| Series | BGA |
| Amperage | 40A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 208Y/120VAC, 240VAC, 480Y/277VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 208Y/120VAC, 65kA @ 240VAC, 35kA @ 480Y/277VAC, 20kA @ 250VDC |
| Frame Type | BGA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | 14-2/0 AWG (Cu/Al) |
| 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 | Alarm Switch, Auxiliary Switch, Padlock Attachment, Shunt Trip, Undervoltage Release |
|---|---|
| Standards | CSA C22.2 No. 5, EN/IEC 60947-2, HACR, NEMA AB 1, UL 489 |
| Approval | CCC, CE, CSA, EAC, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated |
Product FAQs
9 answersHow should I size the Square D BGA24040Y2 for a continuous load?
This breaker has a 40A rated current and an 80% continuous load rating. Select it so the continuous load does not exceed 80% of its rated current, rather than treating 40A as its continuous-load capacity.
What voltage and frequency ratings should I check before selecting this breaker?
The rated voltages are 240VAC and 480Y/277VAC, with a rated frequency of 50/60Hz. Match the circuit voltage and frequency to these ratings; the Y notation indicates a wye system voltage.
What interrupting rating applies at 240VAC?
The UL 489 interrupting rating at 240VAC is 65kA. Compare that rating with the available fault current at the installation point, which must not exceed the breaker's interrupting rating.
Can I adjust the thermal or magnetic trip settings?
Both the thermal and magnetic trip settings are fixed. Thermal-magnetic protection responds to sustained overloads through its thermal element and short circuits through its magnetic element, so selection does not involve field-adjustable trip settings.
What conductor sizes and materials can I terminate at the load lugs?
The load-side lugs accept copper or aluminum conductors from 14 AWG through 2/0 AWG. Use that range to check terminal acceptance, and select conductor size for the circuit's ampacity requirements rather than terminal capacity alone.
What mounting method does this breaker use?
It uses I-Line mounting, with load-side lug connections. Plan the installation around that mounting method and the separate lug terminations for outgoing conductors.
How much physical space should I account for in my layout?
This PowerPacT BG series breaker has a B-Frame and measures 5.4 in high, 2.1 in wide and 3.5 in deep. Use those dimensions for the breaker body when planning the layout, while accounting separately for conductor routing and working access.
What does the HACR marking mean when selecting this breaker?
HACR refers to heating, air conditioning and refrigeration applications. The marking is relevant when equipment instructions call for a HACR circuit breaker; also check the required current, voltage and interrupting ratings.
What operating temperature range should I check for the installation location?
The operating temperature range is -25 to 70 °C. Check the temperature where the breaker will operate, including heat within the enclosure, against that range.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 7 reviews.
- BBrentVerified BuyerReviewingSquare D BGA36050 - 50A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/16/26Breakers
Breakers looked great.
- BBrentVerified BuyerReviewingSquare D BGA36030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/16/26Breakers
Breakers that were ordered were exactly as expected.
- PHPaul H.Verified BuyerReviewingSquare D BGA36060 - 60A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/23/26Worked Perfectly.
Prompt shipping. We received the breaker on-time for a scheduled outage of the switchgear feeding an entire building. Thank you!
- JBJosh B.Verified BuyerReviewingSquare D BGA36070 - 70A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars11/11/25Great transaction.
Product arrived in 3 days and as advertised.
- JMJohn M.ReviewingSquare D BGA36080 - 80A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/15/24Good purchase
Material arrived in good condition. Glad to have a source to get this quickly.