Eaton / Cutler-Hammer QBHW2020V Miniature Circuit Breaker
- 20A
- 2 Pole
- Bolt-On
Eaton / Cutler-Hammer
QBHW2020V
Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
QBHW2020V
Quantity
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Eaton / Cutler-Hammer QBHW2020V - 20A 2 Pole Miniature Circuit Breaker
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Description
Built specifically for demanding thermal environments, this 20-amp miniature breaker features a specialized 50°C ambient calibration to prevent nuisance tripping in hot enclosures. The component bolts into standard Eaton Pow-R-Line panelboards, making it highly suitable for marine vessels and heavy industrial facilities. Alongside its 22kAIC interrupting capacity, the unit maintains switching duty (SWD) and HACR ratings for versatile application across varied loads.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | QBHW |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC, 48VDC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC, 5kA @ 48VDC |
| 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 | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | 50°C Calibration |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 50C |
| Construction Features | HACR Rated, Non-Interchangeable Trip, 50C Ambient Calibration |
Product FAQs
7 answersWhat panelboards are compatible with the QBHW2020V?
This breaker is designed for use in Eaton Pow-R-Line panelboards, specifically the PRL1a and PRL1X series. It is also backward compatible with older Westinghouse W22B panelboards.
What does the V suffix mean in the QBHW2020V catalog number?
The V suffix indicates that the breaker features a special 50 degrees Celsius (122 degrees Fahrenheit) ambient temperature calibration. This prevents nuisance tripping in high-ambient environments, whereas standard breakers are calibrated for 40 degrees Celsius.
Can I use the QBHW2020V to replace a standard QBHW2020 or QBH2020?
Yes, it is an exact physical substitute for the standard QBHW2020 and the discontinued QBH2020. It will fit the same panel spaces but offers the upgraded 50 degrees Celsius ambient calibration.
What is the difference between the BAB2020 and the QBHW2020V?
While both are 20A, 2-pole bolt-on breakers that fit the same panelboards, they have different interrupting ratings. The BAB2020 is rated for 10kAIC, whereas the QBHW2020V is rated for 22kAIC and includes the high-ambient temperature calibration.
Are BAB and QBHW breakers interchangeable in the same panel?
Yes, Eaton PRL1a and PRL1X panelboards accept both BAB and QBHW breakers on the same chassis. You can mix them as long as the interrupting rating of each breaker meets the available fault current requirements for its specific circuit.
How is the QBHW2020V secured inside the panelboard?
It utilizes a bolt-on connection that fastens directly to the panelboard bus. This provides a secure, vibration-resistant contact that is required in many heavy commercial and industrial applications.
Is it safe to install the 50C calibrated QBHW2020V in a standard 40C environment?
Yes. While the breaker is specially calibrated to operate accurately in 50 degrees Celsius high-ambient environments, it is completely safe and functional for use in standard 40 degrees Celsius applications.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 11 reviews.
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Rating
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