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BQL Classic Replacement Circuit Breakers, 50A, #14-8 AWG, Cu/Al, Three-pole, 10 kAIC at 120/240V
Manufacturer Resources
Product Specs
- Amperage Rating:
- 50A
- Circuit Breaker Type:
- BQL
- 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
- Wire Size:
- #14-8 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
- Product Length:
- 5 in
B-LINE BQL350 – Frequently Asked Questions
1) Will the B-Line BQL350 breaker work on a three-phase panel?
BQL350 is a three-pole, 50 amp breaker rated 120/240 V. Three poles means it lands on three bus stabs and switches all three legs together, which is what a three-phase load such as a rooftop unit or a three-phase motor circuit needs. Note the voltage rating is 120/240 V, so it suits a 120/240 V system, not a 277/480 V panel.
2) Is the BQL350 rated for an air conditioning or heat pump circuit?
It is HACR rated, which is the marking required for breakers feeding heating, air conditioning and refrigeration equipment with group motor loads. Combined with the three-pole configuration and 50 amp rating, it covers a typical three-phase condensing unit branch circuit at 120/240 V.
3) Is 10 kAIC enough interrupting rating for my panel?
The BQL350 is rated 10 kAIC at 120/240 Vac. That covers most residential and light commercial panels, but on a service with higher available fault current, typically larger commercial services close to the transformer, your engineer may require a 22 kAIC or series-rated combination instead. Check the available fault current on the panel label against the 10 kAIC figure before installing.
4) What does BQL mean on a circuit breaker, and is this a direct replacement part?
BQL is the breaker type, a bolt-on style classic replacement breaker. B-Line lists the BQL350 as a classic replacement circuit breaker, meaning it is built to drop into existing BQL-type panel positions rather than being a new proprietary design. Match the panel's accepted breaker type to BQL before ordering.
5) How much space does the BQL350 three-pole breaker take up in the panel?
Overall it measures 3 in high by 3 in wide by 5 in deep and weighs half a pound. As a three-pole unit it occupies three adjacent single-pole spaces on the bus, so you need three consecutive open positions on the same phase sequence.
6) I need the exact part number for a 50A three-pole BQL breaker to order for stock.
The manufacturer part number is BQL350 from B-Line: BQL type, 50 amp, three-pole, 10 kAIC at 120/240 V, with #14-8 AWG Cu/Al lugs.
How fast can I get the B-LINE BQL350 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 BQL350 come with a warranty?
Absolutely. The B-LINE BQL350 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 BQL350?
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 BQL350 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.