Eaton / Cutler-Hammer QBHW3020HT Miniature Circuit Breaker
- 20A
- 3 Pole
- Bolt-On
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Eaton / Cutler-Hammer QBHW3020HT - 20A 3 Pole Miniature Circuit Breaker
New
Quantity
Description
Built for circuit protection, the Eaton / Cutler-Hammer QBHW3020HT miniature circuit breaker is rated 20A, 3 poles and 240VAC, with a 22kA interrupting rating at 240VAC. This 3-phase Quicklag breaker uses a QBHW series BAB frame and bolt-on mounting. Box lugs accept 14-4 AWG wire. Fixed thermal-magnetic tripping provides long-time and instantaneous protection. It is HACR rated and carries CSA and UL approvals to CSA C22.2 No. 5 and UL 489.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | QBHW3020HT |
| Series | QBHW |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC |
| Frame Type | BAB |
|---|---|
| Terminal Type | Box 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 Thermal, Fixed Magnetic |
| 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 QBHW3020HT?
This breaker is rated 20A at 240VAC. Select it for an AC circuit whose voltage is within that rating, with the load and conductor ampacity coordinated to the 20A overcurrent rating.
How do I evaluate its interrupting rating against available fault current?
The interrupting rating is 22kA at 240VAC. Available fault current at the installation point must not exceed that rating.
How does the thermal-magnetic trip work, and can I adjust it?
The thermal element provides long-time overload protection, while the magnetic element provides instantaneous short-circuit protection. Both settings are fixed, so selection must account for the load without relying on field adjustment.
What installation method does the bolt-on mounting require?
Bolt-on mounting uses a bolted attachment rather than a plug-in connection. Plan the installation around securing the breaker with that mounting method.
What conductor sizes can the box lugs accept?
The box lugs accept conductors from 14 AWG through 4 AWG. Choose a conductor within that range based on the circuit load and applicable ampacity requirements.
What does the HACR rating mean for equipment circuits?
HACR refers to heating, air conditioning and refrigeration applications. The rating supports selection where HACR-rated overcurrent protection is required, with the breaker rating chosen to meet the equipment's circuit requirements.
Which safety standards and approvals apply to this breaker?
The breaker has UL and CSA approvals under UL 489 and CSA C22.2 No. 5. These circuit breaker safety standards are relevant when a project requires those approvals for overcurrent protection.
What does the 3-pole construction mean for conductor protection?
The Eaton / Cutler-Hammer QBHW3020HT has 3 poles, providing overcurrent protection for the three phase conductors rather than a single phase conductor.
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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