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Manufacturer Resources
Product Specs
- Amperage Rating:
- 50A
- Circuit Breaker Type:
- QCHX
- Connection:
- Cable-in/cable-out
- Interrupt Rating:
- 42 kAIC
- Number Of Poles:
- Two-pole
- Trip Type:
- Non-interchangeable
- Voltage Rating:
- 120/240V
- Department:
- Electrical
- Product Length:
- 3.8 IN
- Product Height:
- 4.8 IN
- Product Weight:
- .8 LB
- Product Width:
- 2.2 IN
B-LINE QHCX2050 – Frequently Asked Questions
1) Will the B-Line QHCX2050 breaker handle a 240V two-pole circuit like a water heater or small compressor?
Yes. The QHCX2050 is a two-pole breaker rated 120/240V at 50 amps, so it covers a single 240V two-wire load or a 120/240V circuit. Thermal-magnetic trip unit, non-interchangeable, so the 50A rating is fixed and cannot be swapped down later.
2) Is a 42 kAIC interrupt rating enough for an industrial panel fed from a large transformer?
The QHCX2050 is rated 42 kAIC at 120/240V, which is the high-interrupt version of the Quicklag line and is what you specify when available fault current at the panel exceeds the 10 kAIC of a standard residential-grade breaker. Compare the 42 kAIC figure against the available short-circuit current on your coordination study for that bus.
3) Does the QHCX2050 bolt onto a panel bus or is it a standalone wired breaker?
It is a cable-in/cable-out device, meaning both the line and load sides terminate on conductors rather than plugging onto a panelboard bus stab. That makes it suited to enclosed or standalone breaker applications and motor or equipment disconnect use, not to filling a slot in a plug-on load center.
4) Can I use the QHCX2050 on a 480V three-phase system?
No. Its voltage rating is 120/240V and it has two poles, so it cannot be applied on a 480V system or on a three-phase circuit needing three poles. For 480V or three-phase work you need a breaker rated for that system voltage and pole count.
5) Can I field-change the amp rating on the QHCX2050 if the load changes?
No. The trip unit is non-interchangeable, so the breaker is fixed at 50A. If the load is resized you replace the whole breaker with the correct ampere rating rather than swapping a trip unit.
6) What is the difference between a thermal-magnetic breaker like the QHCX2050 and an electronic trip breaker?
Thermal-magnetic operation means a bimetal element handles sustained overloads and a magnetic element handles short circuits, with no adjustable settings. On the QHCX2050 those curves are fixed because the trip is non-interchangeable. Electronic trip units let you tune long-time, short-time and instantaneous pickup for selective coordination; for a straightforward 50A branch or feeder at 120/240V, the fixed thermal-magnetic unit is the normal choice.
7) What exact part number do I order for the 50 amp two-pole Quicklag industrial breaker?
Order manufacturer part number QHCX2050 from B-Line. That number covers the two-pole, 50A, 120/240V, 42 kAIC Quicklag industrial breaker with cable-in/cable-out terminations.
How fast can I get the B-LINE QHCX2050 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 QHCX2050 come with a warranty?
Absolutely. The B-LINE QHCX2050 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 QHCX2050?
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 QHCX2050 from ZenSupply?
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and
rewards on
every order.
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