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Manufacturer Resources
Spec Sheet
Product Specs
- Amperage Rating:
- 45A
- Certifications:
- UL Listed
- Circuit Breaker Type:
- QCHW
- Connection:
- Cable-in/cable-out
- Interrupt Rating:
- 22 kAIC
- Number Of Poles:
- Single-pole
- Product Height:
- 5 IN
- Product Length Depth:
- 3.6 IN
- Product Weight:
- 3.2 LB
- Product Width:
- .3 IN
- Trip Type:
- Thermal-magnetic
- Voltage Rating:
- 120/240V
- Department:
- Electrical
- Product Group:
- Electrical Components
- Product Subgroup:
- Circuit Breakers
- Product Type:
- Industrial miniature circuit breaker
- Product Details:
- Industrial miniature circuit breaker
B-LINE QCHW1045 – Frequently Asked Questions
1) What amperage and voltage is the Eaton QCHW1045 circuit breaker rated for?
The QCHW1045 is a 45A single-pole breaker rated 120/240 V. That makes it a single-phase device suited to a 120/240 V panel, not a 3-phase 480 V system.
2) How does the QCHW1045 connect to the branch wiring, and does it plug onto a bus?
This is a cable-in/cable-out breaker, so both line and load terminate on wire lugs rather than clipping onto a panel bus stab. Plan for conductor terminations on both ends when you lay out the enclosure.
3) What kind of trip mechanism does the Eaton QC QCHW1045 use?
Thermal-magnetic. The thermal element handles sustained overloads with a time delay that rides through normal inrush, while the magnetic element trips instantly on a short circuit. It is a standard overcurrent breaker, not an electronic trip or a ground-fault device.
4) Is the QCHW1045 UL Listed for commercial and institutional work?
Yes, the QCHW1045 is UL Listed, which is what most facility and inspection authorities look for on an industrial miniature circuit breaker going into a commercial panel.
5) Is QCHW1045 the correct part number to order for an Eaton QC breaker replacement?
The manufacturer part number is QCHW1045, from the Eaton QCHW breaker family. Match the existing breaker's type designation as well as the amperage, since QCHW is a cable-in/cable-out style and will not swap one-for-one with a plug-on QC breaker.
6) Can I use the QCHW1045 for a 240 V two-pole load?
Not on its own. It is a single-pole device, so it protects one ungrounded conductor. A straight 240 V two-wire load needs a two-pole breaker of the same QCHW type and amperage instead.
How fast can I get the B-LINE QCHW1045 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 QCHW1045 come with a warranty?
Absolutely. The B-LINE QCHW1045 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 QCHW1045?
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 QCHW1045 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.