Eaton / Cutler-HammerQBHW2040S
Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Eaton / Cutler-Hammer QBHW2040 Miniature Circuit Breaker
- 40A
- 2 Pole
- Bolt-On
Eaton / Cutler-Hammer
QBHW2040
Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
QBHW2040
Quantity
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Eaton / Cutler-Hammer QBHW2040 - 40A 2 Pole Miniature Circuit Breaker
New
Quantity
Quantity
Eaton / Cutler-Hammer QBHW2040 - 40A 2 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | QBHW2040 |
| Series | QBHW |
| Amperage | 40A |
| 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 (Cu/Al) |
| 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Sold out
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Eaton / Cutler-Hammer QBHW2040 - 40A 2 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | QBHW2040-R |
| Series | QBHW |
| Amperage | 40A |
| 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 (Cu/Al) |
| 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
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Description
Built for heavy-duty commercial use, the Eaton QBHW2040 provides dependable thermal-magnetic protection for branch circuits. This 40-amp, 2-pole miniature circuit breaker belongs to the Quicklag family. The device features a secure bolt-on mounting style designed specifically for Eaton Pow-R-Line panelboards. It includes load side box lugs that accommodate 14-4 AWG wire. This HACR-rated breaker offers a 22 kAIC interrupt capacity at 120/240VAC and supports 48VDC applications.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | QBHW2040 |
| Series | QBHW |
| Amperage | 40A |
| 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 (Cu/Al) |
| 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Product FAQs
7 answersWhat panelboards are compatible with the QBHW2040?
This bolt-on breaker is designed for use in Eaton Pow-R-Line panelboards, including the PRL1a, PRL2a, PRL1, and PRL2 series. It is not compatible with standard residential plug-on loadcenters.
What is the difference between the BAB2040 and the QBHW2040?
Both are 40A, 2-pole bolt-on breakers with the same physical dimensions, but they have different interrupting capacities. The BAB2040 is rated for 10kAIC, while the QBHW2040 is rated for 22kAIC at 120/240VAC.
Can the QBHW2040 be used in DC applications?
Yes, this breaker is rated for DC circuits up to 48VDC, where it provides an interrupting capacity of 5kAIC.
Does the QBHW2040 provide GFCI or AFCI protection?
No, this is a standard thermal-magnetic circuit breaker that provides overload and short-circuit protection. It does not include ground fault or arc fault protection circuitry.
How does the QBHW2040 connect to the panelboard?
It features a bolt-on mounting design, securing directly to the panelboard bus with a screw. This provides a stable, reliable connection ideal for commercial and industrial environments.
Is the QBHW2040 HACR rated?
Yes, Eaton Quicklag breakers in this amperage range are HACR rated, making them suitable for protecting heating, air conditioning, and refrigeration equipment circuits.
Can I use the QBHW2040 to replace an older Cutler-Hammer or Westinghouse breaker?
Yes. Eaton acquired both Cutler-Hammer and Westinghouse electrical distribution lines. The QBHW2040 is a direct replacement for legacy Cutler-Hammer and Westinghouse breakers with the same catalog number.
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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