Eaton / Cutler-Hammer QBHW3050HT Miniature Circuit Breaker
- 50A
- 3 Pole
- Bolt-On
Quantity
Eaton / Cutler-Hammer QBHW3050HT - 50A 3 Pole Miniature Circuit Breaker
New
Quantity
Description
Built for circuit protection, the Eaton / Cutler-Hammer QBHW3050HT miniature circuit breaker is rated 50A, 3-pole and 240VAC, with a 22kA interrupting rating at 240VAC. This QBHW series breaker has a BAB frame and bolt-on mounting. Its fixed thermal magnetic trip provides long-time and instantaneous protection. Lug terminals accept 14-4 AWG wire. It carries CSA and UL approvals, meets CSA C22.2 No. 5 and UL 489 standards, and is HACR rated.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | QBHW3050HT |
| Series | QBHW |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC |
| Frame Type | BAB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Pow-R-Line Panelboards |
| Wire Gauge | 14-4 AWG |
| Max Wire | 4 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Alarm Switch, Auxiliary Switch |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Product FAQs
8 answersWhat circuit rating should I use when selecting the Eaton / Cutler-Hammer QBHW3050HT?
This miniature circuit breaker is rated 50A at 240VAC. Use those ratings when coordinating the breaker with the circuit voltage, load and conductor ampacity.
How does the 3-pole configuration affect circuit connections?
The 3-pole, 3-phase configuration provides protection for the three phase conductors. A neutral connection is not applicable, so the breaker connections are for the phase conductors.
How do I check whether its interrupting rating is sufficient?
The interrupting rating is 22kA at 240VAC. Compare that rating with the available fault current at the installation point; the available fault current must not exceed the interrupting rating.
How does the thermal-magnetic trip operate, and can I adjust it?
The thermal-magnetic trip provides long-time overload protection and instantaneous response to short-circuit current. Its trip settings are fixed, so select the breaker for the required protection rather than planning to adjust its settings.
What does bolt-on mounting mean for installation?
Bolt-on mounting uses a bolted attachment to secure the breaker. Plan for fastening during installation rather than a plug-in mounting procedure.
What wire sizes can the lug terminals accept?
The lug terminals accept 14-4 AWG conductors. Use that range to check terminal acceptance, then select conductor size for the 50A circuit and applicable installation requirements; terminal acceptance alone does not determine conductor ampacity.
What does the HACR rating mean for equipment circuit selection?
HACR refers to heating, air-conditioning and refrigeration. This rating is relevant when selecting circuit protection for an application that requires an HACR-rated breaker.
Which approvals matter when selecting this breaker?
The breaker carries UL and CSA approvals. These support selection for projects that require circuit breakers with both approvals.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 11 reviews.
- CMCalvin M.Verified BuyerReviewingEaton / Cutler-Hammer QBHW2100 - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 4 out of 5 stars7/22/26SuperBreakers
SuperBreakers haven't disappointed me yet. They always have what I need and very timely deliveries!
- WJWilliam J.Verified BuyerReviewingEaton / Cutler-Hammer QBHW1020 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars4/2/26Emergency-Overnight Purchase and Delivery
I needed breaker ASAP and SuperBreakers made it happen!
- NSNathan S.Verified BuyerReviewingEaton / Cutler-Hammer QBHW2040S - 40A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars3/19/26Arrived Just in Time
Always satisfied with my SuperBreakers purchases!
- PMPete M.Verified BuyerReviewingEaton / Cutler-Hammer QBHW2015 - 15A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/12/25Great service and very helpful
Knowledgable staff, easy to use website. Quick shipping turnaround.
- BCBrian C.ReviewingEaton / Cutler-Hammer QBHW2020 - 20A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/9/23plug & play
Your website is very user friendly parts arrived promptly exact same parts no issues