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Manufacturer Resources
Spec Sheet
Product Specs
- Amperage Rating:
- 50A
- Circuit Breaker Type:
- HBQL
- Compliances:
- HACR Rated
- Interrupt Rating:
- 10 kAIC at 120/240 Vac
- Number Of Poles:
- Three-pole
- Product Height:
- 3 IN
- Product Length Depth:
- 5 IN
- Product Weight:
- .5 LB
- Product Width:
- 3 IN
- Voltage Rating:
- 120/240V
- Department:
- Electrical
- Product Group:
- Electrical Components
- Product Subgroup:
- Circuit Breakers
- Product Type:
- Classic replacement circuit breaker
- Product Details:
- Classic replacement circuit breaker
B-LINE HBQL350 – Frequently Asked Questions
1) Is the HBQL350 breaker a three-phase (3-pole) 50 amp breaker?
Yes. The Eaton/B-Line HBQL350 is a three-pole thermal magnetic breaker rated 50A at 120/240 Vac, so it handles a three-phase or three-wire load on a panel rated for that voltage.
2) Can I use the HBQL350 on an air conditioner or heat pump circuit?
Yes, it is HACR rated, which means it is acceptable as the branch circuit protective device for multi-motor and combination load HVAC equipment where the nameplate calls for an HACR type breaker. At 50A three-pole it suits a three-phase condensing unit or rooftop unit whose maximum overcurrent protection is 50 amps or more.
3) Will an HBQL350 drop into my existing panel as a replacement breaker?
It is a classic replacement breaker in Eaton's HBQL type, so it fits panels that take HBQL (high interrupting BQ) three-pole breakers. The deciding factor is the breaker type marking on your panel label, not the amp rating. If the label calls for HBQL, the HBQL350 is the direct 50A three-pole replacement. If it calls for a standard BQ, BR, CH, or another manufacturer's type, this is not the right breaker.
4) What is the difference between an HBQL and a standard BQ breaker?
Same physical family, different interrupting capacity. The HBQL is the high interrupting version, rated 10 kAIC at 120/240 Vac, where the standard BQ line is built for lower available fault current. Use the HBQL where the panel or the engineer calls for the higher AIC rating; the two are not interchangeable in the other direction if the spec requires 10 kAIC.
5) What exact part number should I order for a 50 amp three-pole HBQ breaker?
Order manufacturer part number HBQL350. The number reads out as HBQL type, 3 poles, 50 amps, and it is the single orderable model under this B-Line/Eaton listing.
6) How much space does the HBQL350 take up in a panel or enclosure?
The HBQL350 measures 3 in high, 3 in wide and 5 in deep, and weighs about half a pound. Use the 5 in depth when checking clearance behind the deadfront or inside a shallow surface-mount enclosure.
7) Is the HBQL350 a thermal magnetic breaker or an electronic trip unit?
Thermal magnetic. A bimetal element handles sustained overloads and a magnetic element trips instantly on a short circuit, with no adjustable electronic settings to program. That is what most panel-level branch protection uses, and it is why this one works as a straight swap for an existing HBQL breaker.
How fast can I get the B-LINE HBQL350 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 HBQL350 come with a warranty?
Absolutely. The B-LINE HBQL350 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 HBQL350?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the B-LINE HBQL350 from ZenSupply?
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and
rewards on
every order.
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