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Eaton BAB thermal magnetic circuit breaker
Manufacturer Resources
Product Specs
- Amperage Rating:
- 125A
- Circuit Breaker Type:
- BQL
- Compliances:
- HACR Rated
- Interrupt Rating:
- 10 kAIC at 120/240 Vac
- Number Of Poles:
- Two-pole
- Product Height:
- 2 IN
- Product Length Depth:
- 5 IN
- Product Weight:
- .5 LB
- Product Width:
- 3 IN
- Voltage Rating:
- 120/240V
- Wire Size:
- #8-2/0 AWG Cu/Al
- Department:
- Electrical
- Product Group:
- Electrical Components
- Product Subgroup:
- Circuit Breakers
- Product Type:
- Classic replacement circuit breaker
- Product Details:
- Classic replacement circuit breaker
B-LINE BQL2125 – Frequently Asked Questions
1) What wire size can I land on the Eaton BQL2125 125 amp breaker?
Lug range on the BQL2125 is #8 through 2/0 AWG, and it's rated for copper or aluminum conductors. For a 125 amp two-pole load that generally puts you at 2/0 aluminum or 1 AWG copper depending on the conductor temperature rating and derating you're working to. Anything larger than 2/0 won't seat in the lug, so if your feeder is already 4/0 you need a different breaker or a tap.
2) Will a BQL breaker fit in my existing Eaton panel, or do I need a BR type?
The BQL2125 is a BQL type breaker, and BQL is a quad/tandem-style bus interface that is not interchangeable with BR, CH, or Type QP. Check the breaker chart on the panel label: if it doesn't list BQL, this won't seat properly on the bus. It's sold as a classic replacement breaker, so the usual application is swapping out a failed BQL of the same rating.
3) Can I use the BQL2125 as the feeder breaker for an air conditioner or heat pump?
It's HACR rated, so it's acceptable for the group motor and refrigeration loads on heating, air conditioning and refrigeration equipment where the nameplate calls for an HACR type breaker. Size it to the maximum overcurrent protection printed on the unit nameplate, not just the MCA.
4) Is this breaker good enough for a panel with high available fault current?
10 kAIC at 120/240 Vac is the interrupting rating on the BQL2125. On most residential and light commercial services fed from a modest transformer that's fine, but if your short circuit study or the panel's series rating calls for 22 kA or higher at the breaker, this device does not meet it. Confirm the available fault current at the panel before you specify it.
5) Does the BQL2125 have any ground fault or arc fault protection?
No. It's a thermal magnetic breaker, meaning overload and short circuit protection only. If the circuit needs GFCI or AFCI protection, you need a dedicated GFCI or AFCI breaker or a device-level solution downstream.
6) What are the physical dimensions of the BQL2125 breaker?
Stated size is 2 in, 5 in, and 3 in for height, length/depth and width, at about half a pound. Useful if you're checking gutter space or dead-front clearance in a tight load center before you order.
How fast can I get the B-LINE BQL2125 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the B-LINE BQL2125 come with a warranty?
Absolutely. The B-LINE BQL2125 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the B-LINE BQL2125?
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product
selection,
installation tips, and troubleshooting. Contact Us
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