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Eaton / Cutler-Hammer GHB3045BP8 Molded Case Circuit Breaker

  • 45A
  • 3 Pole
  • Bolt-On
Eaton / Cutler-Hammer GHB3045BP8
Molded Case Circuit Breaker
Brand Eaton / Cutler-Hammer
SKU GHB3045BP8
Select Item Condition
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  • 45A
  • 3 Pole
  • Bolt-On

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Eaton / Cutler-Hammer GHB3045BP8 - 45A 3 Pole Molded Case Circuit Breaker

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$551.00 In Stock

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Description SpecificationsProduct FAQs SuperClub Warranties Shipping Reviews 4.8 (30)

Description

Supplied as a bulk pack of eight, the Eaton GHB3045BP8 provides multiple 3-pole, 45A molded case circuit breakers for large projects. These Series C G-Frame breakers deliver reliable thermal-magnetic protection. Each unit bolts securely into Eaton Pow-R-Line panelboards and switchboards. The bolt-on design ensures a stable, vibration-resistant connection for three-phase power distribution. Rated 14 kAIC at 480Y/277V, these breakers are HACR rated and reverse feed capable.

Specifications

Key specifications
Brand Eaton / Cutler-Hammer
Part Number GHB3045BP8
Series GHB
Amperage 45A
Poles 3
Mounting Style Bolt-On
Voltage 240VAC, 480Y/277VAC, 125/250VDC
Phase 3
AIC Rating 65kA @ 240VAC, 14kA @ 480Y/277VAC, 14kA @ 125/250VDC
Fit and installation
Terminal Type Lugs
For Use With Eaton Series C Panelboards, Pow-R-Line Panelboards, Switchboards, Motor Control Centers
Wire Gauge #10-1/0 AWG (Cu/Al)
Max Wire 1/0 AWG
Min Wire 10 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, Undervoltage Release, Alarm Switch
Accessories Bulk Pack (Quantity 8)
Standards CSA C22.2 No. 5, Federal Specification W-C-375B, UL 489
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, Reverse Feed, Common Trip, Non-Interchangeable Trip

Product FAQs

7 answers
Which panelboards are compatible with the GHB3045BP8 circuit breaker?

This G-frame breaker is designed to bolt into Eaton Series C panelboards, Pow-R-Line panelboards, switchboards, and motor control centers.

Are Eaton and Cutler-Hammer GHB breakers interchangeable?

Yes, Eaton acquired Cutler-Hammer and continues to manufacture the Series C GHB line. An Eaton GHB3045BP8 is an exact replacement for a legacy Cutler-Hammer breaker with the same catalog number.

Can the GHB3045BP8 be used in reverse feed applications?

Yes, this breaker is suitable for reverse feed installations, providing wiring flexibility for back-fed main or subpanel configurations.

What wire sizes are accepted by the terminals on this 45A breaker?

The standard factory lugs accommodate #10 through 1/0 AWG conductors and are rated for both copper and aluminum wiring.

How does the trip unit function on the GHB series breakers?

It utilizes a fixed thermal-magnetic trip mechanism. The thermal component provides long-time delay for overloads, while the magnetic component offers instantaneous tripping for short circuits.

Is this Eaton breaker rated for direct current (DC) systems?

Yes, in addition to its AC ratings, it is certified for use in DC applications up to 125/250VDC with a 14kA interrupting capacity.

How is the GHB3045BP8 secured inside the panel?

It features a bolt-on mounting style, which provides a secure, vibration-resistant connection directly to the panel busbar.

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Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.

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Reviews

4.8
Rated 4.8 out of 5 stars
Based on 30 reviews
Reviews Summary
Customers say these breakers function reliably and arrive quickly with proper packaging. The ordering process is straightforward, and products consistently match descriptions. Many reviews highlight fast shipping, competitive pricing, and availability. Users appreciate the condition of refurbished units and easy online ordering. One customer reported receiving an incorrect amperage breaker despite paying for expedited delivery. Another noted disappointment when duplicate orders were not consolidated to reduce freight costs. Overall, customers value the quick procurement and dependable product quality.
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30 reviews
  • TG
    Timothy G.
    Verified Buyer
    Reviewing
    Eaton / Cutler-Hammer GHB3020 - 20A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    9/17/26
    Used model

    Breaker ohm tested out fine and currently working on load test with a longer term battery charger. So far so good. Packaged very well no visible damages during shipping. Even received a follow up call from customer that I missed.

    Was this helpful?
  • CK
    Christopher K.
    Verified Buyer
    Reviewing
    Eaton / Cutler-Hammer GHB3030 - 30A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    9/16/26
    Great and easy support

    Easy ordering process, and always helpful over support

    Was this helpful?
  • DM
    Dustin M.
    Verified Buyer
    Reviewing
    Eaton / Cutler-Hammer GHB3030 - 30A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    8/31/26
    Great Price and Worked as Expected

    Bought the renewed breaker and all works as expected and saved us money. Great price and availability. Thank you.

    Was this helpful?
  • MW
    MARK W.
    Verified Buyer
    Reviewing
    Eaton / Cutler-Hammer GHB1020 - 20A 1 Pole Molded Case Circuit Breaker
    Rated 3 out of 5 stars
    7/21/26
    Good Product, but Disappointed With the Service

    Good product, but I was disappointed with the service. I accidentally placed two separate orders and ended up paying freight on both. I had requested that they combine the orders, and had that been done with the freight waived, it would have saved me money.

    Other than that, everything was good. I’m just disappointed that no one communicated this to me.

    Was this helpful?
  • AW
    Anthony W.
    Verified Buyer
    Reviewing
    Eaton / Cutler-Hammer GHB3080 - 80A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    4/7/26
    Breaker

    Item came quick and as described. Simple and easy process!

    Was this helpful?