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Manufacturer Resources
Spec Sheet
Product Specs
- Amperage Rating:
- 90A
- Certifications:
- UL Listed
- Circuit Breaker Type:
- QCHW
- Connection:
- Cable-in/cable-out
- Interrupt Rating:
- 22 kAIC
- Number Of Poles:
- Three-pole
- Product Height:
- 5 IN
- Product Length Depth:
- 3.8 IN
- Product Weight:
- 3.1 LB
- Product Width:
- 1.2 IN
- Trip Type:
- Thermal-magnetic
- Voltage Rating:
- 240V
- Department:
- Electrical
- Product Group:
- Electrical Components
- Product Subgroup:
- Circuit Breakers
- Product Type:
- Industrial miniature circuit breaker
- Product Details:
- Industrial miniature circuit breaker
B-LINE QCHW3090H – Frequently Asked Questions
1) Will the Eaton QCHW3090H work on a 480V three-phase panel?
No. The QCHW3090H is rated 240V, so it belongs on a 240V system only. Putting a 240V-rated breaker on a 480V feeder is outside its rating and is not a substitution you can make. For a 480V three-phase circuit you need a breaker rated for that system voltage.
2) Is the QCHW3090H a three-pole 90 amp breaker?
Yes, three poles at 90 amps, 240V, with a thermal-magnetic trip unit. It is an industrial miniature circuit breaker in Eaton's QCHW type, so it covers a three-phase branch or feeder load up to 90A on a 240V system.
3) What part number do I order to match an existing QCHW 90 amp three-pole breaker?
The manufacturer part number is QCHW3090H. Read the label on the breaker you are replacing: the QCHW prefix is the type, 3 is the pole count, 090 is the amperage, and the H suffix marks the 22 kAIC interrupting rating. If your existing unit carries a different suffix, it is a different interrupting rating and not a straight swap.
4) How does the QCHW breaker land its conductors, and does it need a panel bus?
Cable-in/cable-out. Both line and load land on lugs at the breaker itself rather than plugging onto a panelboard bus stab, which is what makes the QCHW style usable as a standalone or enclosed feeder disconnect device instead of only inside a loadcenter.
5) What size enclosure or space do I need for the QCHW3090H?
Plan for a device measuring 5 in high, 3.8 in deep and 1.2 in wide, weighing 3.1 lb. Depth is the number that usually decides the job, since 3.8 inches plus conductor bending space has to clear the enclosure cover.
6) Is this Eaton circuit breaker UL Listed for a commercial or institutional install?
UL Listed, which is what an inspector or facilities spec will normally call for on a molded case branch device. The listed data covers 90A, 240V, three-pole, 22 kAIC.
7) Is a thermal-magnetic breaker the right choice, or should I be looking at an electronic trip unit?
Thermal-magnetic is the standard choice for fixed branch and feeder loads where you do not need adjustable trip settings. The thermal element handles sustained overload and the magnetic element clears short circuits instantly. If you need field-adjustable long-time or instantaneous pickup for coordination with downstream devices, an electronic trip breaker is the better fit. At 90A, 240V, three-pole, the QCHW3090H is a fixed-rating device.
How fast can I get the B-LINE QCHW3090H delivered?
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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 QCHW3090H come with a warranty?
Absolutely. The B-LINE QCHW3090H 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 QCHW3090H?
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installation tips, and troubleshooting. Contact Us
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