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Eaton / Westinghouse EB3070 Molded Case Circuit Breaker
- 70A
- 3 Pole
- Bolt-On
Eaton / Westinghouse
EB3070
Molded Case Circuit Breaker
Brand
Eaton / Westinghouse
SKU
EB3070
Quantity
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Eaton / Westinghouse EB3070 - 70A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
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Description
A drop-in replacement for legacy commercial systems, the Eaton EB3070 is a 3-pole, 70A molded case circuit breaker designed for 240VAC applications. It provides essential thermal-magnetic protection for industrial environments. This bolt-on MCCB installs into older Westinghouse and Eaton panelboards, restoring power without requiring complete system upgrades. It is the original predecessor to the EHD3070.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | EB3070-R |
| Series | EB |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC, 5kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Westinghouse Panelboards, Eaton Panelboards |
| Wire Gauge | 14-1/0 AWG (Al/Cu) |
| 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, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Common Trip, Non-Interchangeable Trip |
Product FAQs
5 answersWhat is the modern cross-reference for the legacy EB3070?
The Eaton EHD3070 is the direct superseding replacement for the EB3070. It provides identical form, fit, and function for legacy Westinghouse and Eaton Cutler-Hammer panelboards.
Which panelboards are compatible with the EB3070 circuit breaker?
This breaker is specifically designed for legacy Westinghouse Type EB distribution panelboards manufactured before 1989. It mounts directly to the busbar to maintain existing electrical infrastructure without requiring a complete system upgrade.
Can the trip unit on the EB3070 be swapped or upgraded?
No, the EB3070 is built with a non-interchangeable, fixed thermal-magnetic trip unit. If different trip characteristics are required, the entire breaker must be replaced.
How does the thermal-magnetic trip mechanism operate on this breaker?
The thermal element provides long-time protection by heating up and tripping during sustained overloads. The magnetic element provides instantaneous protection, tripping the breaker immediately when it detects high-level short-circuit fault currents.
Does the EB3070 require a separate mounting kit for installation?
No, as a bolt-on breaker, it fastens directly to the panelboard bus connections using standard hardware. No additional mounting kits are required for compatible Westinghouse panels.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 6 reviews.
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Rating
6 reviews
- THTerry H.Verified BuyerReviewingEaton / Westinghouse EB3100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/15/26no issues
As described, arrived quickly. As long as your homework is good the come through. They can also cross reference for you too.
- TMTROY M. C.Verified BuyerReviewingEaton / Westinghouse EB1020 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/6/26westinghouse breaker for the very best
it work so good to turn on and off very satisfaction great for OCP. would buy again 10/10
- JSJames S.Verified BuyerReviewingEaton / Westinghouse EB3100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/4/25breaker
Ship time was fair; breaker fits & functions.
- JAJerry A.ReviewingEaton / Westinghouse EB1020 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars5/1/20GE Braker
Re-certified breaker was the exact match for the old one. Thank you for the quick turnaround.
jerry-
- RBRobert B.ReviewingEaton / Westinghouse EB3040 - 40A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/25/19The right one
Fit like a glove, works great