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Eaton / Cutler-Hammer QBHW3070H Miniature Circuit Breaker

  • 70A
  • 3 Pole
  • Bolt-On
Eaton / Cutler-Hammer QBHW3070H
Miniature Circuit Breaker
Brand Eaton / Cutler-Hammer
SKU QBHW3070H
Select Item Condition
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  • 70A
  • 3 Pole
  • Bolt-On

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Eaton / Cutler-Hammer QBHW3070H - 70A 3 Pole Miniature Circuit Breaker

Eaton / Cutler-Hammer QBHW3070H - 70A 3 Pole Miniature Circuit Breaker

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$247.80 In Stock

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Description

Manufactured by Eaton, the QBHW3070H is a 70A miniature circuit breaker from the Quicklag family. Built for commercial distribution, it provides reliable protection for 240V systems. Featuring a bolt-on design and box lug terminals, this breaker installs securely into Pow-R-Line panelboards. It accepts 8-1/0 AWG copper or aluminum wire. Rated at 22 kAIC, it handles higher fault currents than standard breakers. The unit utilizes fixed thermal-magnetic trip technology and is HACR rated.

Specifications

Key specifications
Brand Eaton / Cutler-Hammer
Part Number QBHW3070H
Series QBHW
Amperage 70A
Poles 3
Mounting Style Bolt-On
Voltage 240VAC
Phase 3
AIC Rating 22kA @ 240VAC
Fit and installation
Terminal Type Box Lugs
For Use With Eaton Pow-R-Line Panelboards
Wire Gauge 8-1/0 AWG (Cu/Al)
Max Wire 1/0 AWG
Min Wire 8 AWG
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Fixed Magnetic
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Alarm Switch
Accessories Load Side Lugs Included
Standards CSA C22.2 No. 5, UL 489
Approval CSA, HACR, UL
Temp Rating 40C
Construction Features HACR Rated

Product FAQs

5 answers
Which Eaton panelboards accept the QBHW3070H breaker?

This bolt-on breaker is designed for installation in Eaton Pow-R-Line panelboards, specifically the PRL1a, PRL2a, PRL1X, and PRL2X series.

Is the QBHW3070H suitable for HVAC applications?

Yes, this breaker is HACR rated, meaning it is certified for use with heating, air conditioning, and refrigeration equipment.

Can the QBHW3070H replace older Cutler-Hammer QBH series breakers?

Yes, the QBHW series serves as a direct upgrade and exact replacement for legacy QBH breakers of the same pole and amperage configuration, maintaining the same physical dimensions and bolt-on mounting for Pow-R-Line panels.

What wire gauge is required for the terminals on the QBHW3070H?

The box lugs on this breaker accommodate 8 AWG to 1/0 AWG copper or aluminum wire. Always verify local electrical codes for the exact conductor sizing required for a 70A circuit.

Does the QBHW3070H feature an adjustable trip unit?

No, this breaker features a non-interchangeable, fixed thermal-magnetic trip unit. It provides factory-calibrated Long-Time and Instantaneous (LI) protection that cannot be modified in the field.

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Reviews

4.8
Rated 4.8 out of 5 stars
Based on 11 reviews
Rating
Ratings
11 reviews
  • CM
    Calvin M.
    Verified Buyer
    Reviewing
    Eaton / Cutler-Hammer QBHW2100 - 100A 2 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 4 out of 5 stars
    7/22/26
    SuperBreakers

    SuperBreakers haven't disappointed me yet. They always have what I need and very timely deliveries!

  • WJ
    William J.
    Verified Buyer
    Reviewing
    Eaton / Cutler-Hammer QBHW1020 - 20A 1 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    4/2/26
    Emergency-Overnight Purchase and Delivery

    I needed breaker ASAP and SuperBreakers made it happen!

  • NS
    Nathan S.
    Verified Buyer
    Reviewing
    Eaton / Cutler-Hammer QBHW2040S - 40A 2 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    3/19/26
    Arrived Just in Time

    Always satisfied with my SuperBreakers purchases!

  • PM
    Pete M.
    Verified Buyer
    Reviewing
    Eaton / Cutler-Hammer QBHW2015 - 15A 2 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    8/12/25
    Great service and very helpful

    Knowledgable staff, easy to use website. Quick shipping turnaround.

  • BC
    Brian C.
    Flag of United States
    Reviewing
    Eaton / Cutler-Hammer QBHW2020 - 20A 2 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    8/9/23
    plug & play

    Your website is very user friendly parts arrived promptly exact same parts no issues