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Eaton / Westinghouse E3070 Molded Case Circuit Breaker
- 70A
- 3 Pole
- Bolt-On
Eaton / Westinghouse
E3070
Molded Case Circuit Breaker
Brand
Eaton / Westinghouse
SKU
E3070
Quantity
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Eaton / Westinghouse E3070 - 70A 3 Pole Molded Case Circuit Breaker
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Description
Built for commercial and industrial power distribution, this 70A three-pole molded case breaker delivers standard thermal-magnetic protection. It serves as an exact fit for older infrastructure requiring E-frame components. The unit mounts into legacy Westinghouse, AB De-Ion, and Eaton Pow-R-Line panelboards without adapter kits. It crosses over to the EHD3070 or EB3070 substitute models. Rated for 7kA interrupting capacity at 240VAC, the fixed-trip design ensures consistent performance.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | E3070-R |
| Series | E |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 125/250VDC |
| Phase | 3 |
| AIC Rating | 7kA @ 240VAC, 5kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Westinghouse Panelboards, Eaton Pow-R-Line Panelboards, AB De-Ion Panels |
| Wire Gauge | 14-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 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, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Standard Interrupting Capacity |
Product FAQs
7 answersIs the Westinghouse E3070 still in active production?
No, the E3070 is an obsolete, legacy circuit breaker that is no longer manufactured by the original factory. It is typically sourced to maintain existing electrical systems without upgrading the entire panel.
What are the modern Eaton replacements for the E3070?
The Eaton EB3070 and EHD3070 serve as direct, drop-in replacements. They share the same E-frame dimensions and mounting hardware, allowing you to restore power without modifying the existing enclosure.
Which panelboards accept this E-frame breaker?
This unit mounts directly into classic Westinghouse, AB De-Ion, and Eaton Pow-R-Line panelboards. It provides a rigid bolt-on connection to the bus bars without requiring aftermarket adapter kits.
Does the E3070 require a separate mounting kit?
No, this breaker is designed to bolt directly onto the panelboard bus. The bolt-on configuration ensures a secure, high-conductivity connection without the need for additional mounting hardware.
Can the trip settings on the E3070 be adjusted in the field?
No, this breaker features a non-interchangeable trip unit. Both the thermal (overload) and magnetic (short-circuit) trip functions are fixed at the factory and cannot be modified.
Is this breaker suitable for direct current (DC) systems?
Yes, alongside its standard AC ratings, the E3070 is rated for 250VDC applications with a 5kA interrupting capacity, making it viable for specific industrial DC control circuits.
How does the thermal-magnetic trip mechanism operate?
The thermal component responds to prolonged overcurrent conditions to prevent conductor overheating, while the magnetic component trips instantaneously in the event of a severe short circuit.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 25 reviews.
Total 5 star reviews: 24 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Reviews Summary
Generated by AI from 30 most recent customer reviews
Last updated 8/15/25
Customers say this electrical breaker meets their expectations in terms of functionality and performance. Many reviews mention quick delivery times and competitive pricing. While one user reports voltage detection issues, most find these units work effectively. Common feedback includes satisfaction with product condition upon arrival and straightforward installation. Reviews indicate availability of specialty models that are often hard to find through local suppliers.
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Rating
25 reviews
- MGMike G.Rated 5 out of 5 stars11/27/23Just what we needed and
Just what we needed and fast shipping
- TETimothy E.ReviewingSquare D HU364 Safety SwitchI recommend this productRated 5 out of 5 stars5/9/22quick response!!!!
quick response!!!!
- DGDavid G.ReviewingSquare D HU362 Safety SwitchI recommend this productRated 5 out of 5 stars4/13/22Great service and fast shipping
Great service and fast shipping
- WEWarren E.ReviewingSquare D HU361 Safety SwitchI recommend this productRated 5 out of 5 stars3/1/22600v Disconnect
They have GREAT Inventory! Even my Local suppliers did not have them in stock.
- SKSaki K.ReviewingSquare D HU361 Safety SwitchI recommend this productRated 5 out of 5 stars2/20/22Good product
Good product in good price