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Manufacturer Resources
Spec Sheet
Product Specs
- Amperage Rating:
- 40A
- 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 HBQL340 – Frequently Asked Questions
1) Is the Eaton HBQL340 a three-phase breaker, and what amperage and voltage is it rated for?
The HBQL340 is a three-pole thermal magnetic breaker rated 40A at 120/240 Vac. Three poles means it lands on all three legs of a three-phase panel, so it suits a three-phase motor or equipment circuit rather than a single-phase branch.
2) Can I use this 40 amp breaker for an air conditioner or heat pump circuit?
Yes. The HBQL340 is HACR rated, which means it is approved for use on heating, air conditioning and refrigeration equipment circuits with group motor loads. That is the rating an HVAC contractor needs to see before landing a condensing unit or heat pump feeder on a breaker.
3) Is the HBQL340 a direct replacement for an existing HBQL breaker in my panel?
It is a classic replacement circuit breaker of the HBQL type, so it is the like-for-like swap for an existing three-pole HBQL position at the same 40A rating. Match the pole count, amperage and the panel's interrupting requirement, and confirm the panel is labeled for HBQL-type breakers before you pull the old one.
4) What is the exact part number I should order for a 40 amp three-pole HBQL breaker?
Order Eaton part number HBQL340. The trailing 40 is the ampere rating and the 3 is the pole count, which is how the HBQL family is numbered.
5) What size is the HBQL340 breaker and how much does it weigh?
It measures 5 x 3 x 3 inches (length, height, width) and weighs about half a pound. Useful when you are checking gutter space in a loaded panel or packing a service truck for a swap-out.
6) What does thermal magnetic mean on the Eaton HBQL340, and what does it protect against?
Thermal magnetic means two trip mechanisms in one breaker: a bimetal element that responds to sustained overload with a time delay, and a magnetic element that trips near instantly on a short circuit. For a property manager that is the standard protection package on a branch or feeder circuit, with the 40A thermal side handling the slow overheat and the magnetic side handling the dead short.
How fast can I get the B-LINE HBQL340 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 HBQL340 come with a warranty?
Absolutely. The B-LINE HBQL340 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 HBQL340?
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 HBQL340 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.