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Eaton / Cutler-Hammer GD3045 Molded Case Circuit Breaker
- 45A
- 3 Pole
- Unit Mount
Eaton / Cutler-Hammer
GD3045
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
GD3045
Quantity
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Eaton / Cutler-Hammer GD3045 - 45A 3 Pole Molded Case Circuit Breaker
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Description
Belonging to the proven Series C lineup, the Eaton GD3045 is a 3-pole, 45A molded case circuit breaker. Engineered for commercial and industrial power distribution, it provides essential long-time and instantaneous (LI) protection for critical equipment. This unit-mount breaker integrates seamlessly into Eaton panelboards, switchboards, and motor control centers. Rated at 22 kAIC at 480VAC, it features fixed thermal and magnetic trip settings, reverse feed capability, and an HACR rating.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | GD3045 |
| Series | GD |
| Amperage | 45A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 22kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | GD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Motor Control Centers, Switchboards, Enclosures |
| Wire Gauge | 10-1/0 AWG |
| Max Wire | 1/0 AWG |
| Min Wire | 10 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, Undervoltage Release, Alarm Switch, Padlock Attachment, DIN Rail Adapter, Motor Operator |
|---|---|
| Accessories | Line and Load Terminals |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
8 answersCan I use a GHB or GHC breaker on a 480V 3-phase Delta system instead of the GD3045?
No. GHB and GHC breakers are typically rated for 480Y/277V solid-grounded systems and are not suitable for ungrounded or corner-grounded 480V Delta systems. The GD3045 features a straight 480VAC rating, making it the correct choice for 480V Delta applications.
How does the GD3045 mount compared to a GHB breaker?
The GD3045 is a unit-mount, feed-thru circuit breaker designed to be mounted independently in enclosures, switchboards, or motor control centers. In contrast, GHB breakers are bolt-on devices specifically designed to attach directly to the bus of Eaton panelboards.
Is the GD3045 suitable for direct current (DC) applications?
Yes. In addition to its alternating current ratings, this breaker is rated for up to 250VDC. This makes it a viable option for industrial DC control panels and specific applications requiring thermal-magnetic protection on DC circuits.
Does the GD3045 provide ground fault or arc fault protection?
No. This is a standard thermal-magnetic circuit breaker providing long-time and instantaneous overload and short-circuit protection. It does not contain the specialized circuitry required for GFCI or AFCI protection.
Can I adjust the trip settings on the GD3045?
No. This breaker is built with fixed thermal and fixed magnetic trip elements. If your application requires adjustable trip settings or zone selective interlocking, you will need to upgrade to a breaker frame with an electronic trip unit.
Are the terminal lugs included with the GD3045?
Yes, this feed-thru breaker comes standard with line and load side lugs. The standard lugs are designed to accept 10 AWG to 1/0 AWG wire sizes for your electrical connections.
Can the GD3045 be used as a direct replacement for a GHC breaker?
Yes, the GD and GHC frames share the exact same physical dimensions and mounting footprint. Upgrading to the GD3045 provides the added benefit of a straight 480VAC rating for systems that require it.
What does the LI trip function code mean on this breaker?
The LI designation indicates that the breaker provides Long-Time (L) and Instantaneous (I) protection. The long-time function protects against sustained overloads, while the instantaneous function trips the breaker immediately during a high-current short circuit.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
Total 5 star reviews: 2 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
2 reviews
- JSJohn S.ReviewingEaton / Cutler-Hammer GD3100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/10/23John Schlegel
I was very impressed how quickly I received my order. All customer support were very helpful.
- DIDavid I.ReviewingEaton / Cutler-Hammer GD3100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars2/20/17great product so fa
great product so fa