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Eaton QC thermal magnetic circuit breaker
Manufacturer Resources
Product Specs
- Amperage Rating:
- 55A
- 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
- Product Length:
- 3.6 in
B-LINE QCHW1055 – Frequently Asked Questions
1) What amperage and voltage is the Eaton QCHW1055 circuit breaker rated for?
The QCHW1055 is a single-pole 55A breaker rated 120/240 V. That 55 amp rating is an off-standard size, so if you are replacing a breaker, match the number stamped on the handle rather than rounding up to 60A, which would leave the conductors under-protected.
2) Does the QCHW1055 have a high enough interrupting rating for a commercial service?
It carries a 22 kAIC interrupting rating, which covers panel locations where the available fault current runs above the 10 kAIC common on residential-grade breakers. Compare the 22 kAIC figure against the available fault current calculated at your panel before you specify it.
3) How does the QCHW1055 breaker land its conductors?
This one is a cable-in/cable-out breaker, so both the line and the load side terminate in wire lugs rather than plugging onto a panel bus stab. That makes it suited to enclosed or standalone applications where you feed the breaker with cable, and it means it is not a drop-in for a plug-on load center position.
4) Can I use the QCHW1055 on a 240V single-phase branch circuit?
Not on its own as a two-wire 240V circuit. It is a single-pole device, so it occupies one pole and protects one ungrounded conductor at 120V to ground; the 120/240 V rating describes the system it can be applied on, not two-pole operation. A straight 240V load needs a two-pole breaker of the same type and interrupting rating.
5) Is the QCHW1055 thermal-magnetic or electronic trip?
Thermal-magnetic. The bimetal element handles sustained overloads with an inverse time delay and the magnetic element trips instantly on a short circuit. There is no adjustable electronic trip unit on it, so the trip curve is fixed at the factory.
6) What is the exact part number to order this Eaton QC breaker under?
Order it as QCHW1055. The QCHW prefix identifies the breaker type within the Eaton QC family, and the trailing 055 is the 55 amp single-pole rating. Distributors cross-referencing should hold the full QCHW1055 designation, since adjacent amperages in the same series differ only in those last digits.
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Can I return it if it doesn’t work for me?
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Does the B-LINE QCHW1055 come with a warranty?
Absolutely. The B-LINE QCHW1055 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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