Eaton / Cutler-Hammer EH3050 Molded Case Circuit Breaker
- 50A
- 3 Pole
- Bolt-On
Quantity
Eaton / Cutler-Hammer EH3050 - 50A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Quantity
Eaton / Cutler-Hammer EH3050 - 50A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | EH3050 |
| Series | EH |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Pow-R-Line Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 14-1/0 AWG |
| 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 |
| Standards | CSA C22.2 No. 5, UL 489, NEMA AB-1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Quantity
Eaton / Cutler-Hammer EH3050 - 50A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | EH3050 |
| Series | EH |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Pow-R-Line Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 14-1/0 AWG |
| 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 |
| Standards | CSA C22.2 No. 5, UL 489, NEMA AB-1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Description
Built for commercial applications, the Eaton EH3050 is a 3-pole, 50A molded case circuit breaker from the legacy Westinghouse E-Frame family. It provides reliable long-time and instantaneous (LI) protection. This bolt-on breaker installs into Eaton Pow-R-Line panelboards, switchboards, and motor control centers. For modern upgrades, this unit is replaced by the EHD3050. Rated at 14 kAIC at 480VAC, it features fixed thermal and magnetic trip settings and includes load side lugs.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | EH3050 |
| Series | EH |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Pow-R-Line Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 14-1/0 AWG |
| 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 |
| Standards | CSA C22.2 No. 5, UL 489, NEMA AB-1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Product FAQs
7 answersWhat equipment is the EH3050 compatible with?
This bolt-on breaker is designed for commercial and industrial applications, specifically fitting Eaton Pow-R-Line panelboards, switchboards, and motor control centers. It will not fit standard residential plug-on load centers.
What is the modern replacement for the legacy EH3050?
The Eaton EHD3050 from the Series C F-Frame family serves as the direct modern replacement for the legacy Westinghouse E-Frame EH3050.
Is the EH3050 interchangeable with Westinghouse E-Frame breakers?
Yes, the EH3050 is a legacy Westinghouse E-Frame circuit breaker. Eaton acquired the Westinghouse distribution equipment line, so these breakers are now branded under Eaton or Cutler-Hammer but retain the same physical dimensions and mounting.
What protection does the LI trip function provide?
The LI designation means the thermal-magnetic trip unit includes Long-Time (L) protection for sustained overloads and Instantaneous (I) protection for immediate short-circuit clearing. Both the thermal and magnetic trip points are fixed on the EH3050.
Can the EH3050 be used in DC applications?
Yes, in addition to its AC ratings, the EH3050 is rated for use in DC circuits up to 250VDC, providing an interrupting capacity of 10kA at that voltage.
What wire sizes are compatible with the EH3050 lugs?
The load side lugs on this breaker accept wire gauges ranging from 14 AWG up to 1/0 AWG.
How should the lug connections be secured during installation?
Always use a calibrated torque tool to tighten the lugs to the manufacturer specified torque value printed directly on the breaker label. Proper torque prevents loose connections, which can lead to overheating and arcing.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 7 reviews.
- TSThomas S.Verified BuyerReviewingSiemens EH3B020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/6/25Great
Thanks
- JMJim M.ReviewingSiemens EH3B040 - 40A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/24/23They fit perfectly and saved
They fit perfectly and saved us a lot of money by being able to replace just these breakers
- KHKen H.ReviewingSiemens EH3B030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/12/23Great service
Great service and products fast shipping
- JSJerry S.ReviewingSiemens / ITE EH3B070 - 70A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/20/22Great Price - Breakers Work Fine
My local Supplier was charging me three times the price for a breaker that i bought on super Breakers.
- MRMatt R.ReviewingSiemens EH3B020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/6/2020 Amp Breaker
Received item quickly and in great shape. Thank you!!!