Eaton / Cutler-Hammer QBHW3050HS Miniature Circuit Breaker
- 50A
- 3 Pole
- Bolt-On
Quantity
Eaton / Cutler-Hammer QBHW3050HS - 50A 3 Pole Miniature Circuit Breaker
New
Quantity
Description
Designed for advanced control applications, this 50A miniature breaker features a factory-installed 120/240VAC shunt trip mechanism. This allows facility managers to remotely open the circuit via an external control signal, making it ideal for emergency stops or automated load shedding. The breaker bolts securely into Eaton Pow-R-Line panelboards, providing a stable connection for three-phase systems. It delivers a 22kAIC interrupting rating at 240VAC and includes standard box lug terminals.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | QBHW |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC |
| 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 |
| Available Options | Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip |
Product FAQs
6 answersWhat does the "HS" suffix indicate on the QBHW3050HS?
The "HS" suffix designates that this breaker includes a factory-installed 120/240VAC shunt trip mechanism. This allows the breaker to be tripped remotely via an external control signal, which is often required for emergency stop or load shedding applications.
Which panelboards are compatible with this bolt-on breaker?
The QBHW3050HS is designed exclusively for bolt-on installation in Eaton and Cutler-Hammer Pow-R-Line panelboards.
Can the trip settings on the QBHW3050HS be adjusted in the field?
No, this breaker utilizes a fixed thermal-magnetic trip unit. The long-time and instantaneous (LI) trip functions are factory-set and cannot be modified.
What is the difference between the Eaton BAB3050 and the QBHW3050HS?
While both are 50A, 3-pole bolt-on breakers for Pow-R-Line panels, they differ in interrupting capacity and features. The QBHW series offers a higher 22kAIC rating at 240V compared to the standard 10kAIC of the BAB series. Additionally, the "HS" suffix on this model means it includes a factory-installed shunt trip, which the standard BAB3050 lacks.
How is the shunt trip wired and operated on this breaker?
The factory-installed shunt trip requires an external control voltage, typically 120V to 240VAC, to operate. When the control signal is applied to the shunt trip leads, it energizes the internal coil and mechanically trips the breaker, opening the circuit for safety or control purposes.
Are the box lug terminals rated for both copper and aluminum wire?
Yes, the box lugs on the QBHW3050HS are dual-rated for both copper (CU) and aluminum (AL) conductors, accepting wire sizes from 14 AWG to 4 AWG.
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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