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Eaton / Westinghouse E2100 Molded Case Circuit Breaker
- 100A
- 2 Pole
- Bolt-On
Eaton / Westinghouse
E2100
Molded Case Circuit Breaker
Brand
Eaton / Westinghouse
SKU
E2100
Quantity
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Eaton / Westinghouse E2100 - 100A 2 Pole Molded Case Circuit Breaker
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Description
Built for commercial power distribution, this 100A, 2-pole breaker provides essential thermal-magnetic protection. It is part of the legacy Westinghouse E-Frame series. The bolt-on configuration installs into older Eaton and Westinghouse panelboards. It maintains existing systems and is commonly cross-referenced with EHD2100 or EB2100 substitutes. Rated for 7kAIC at 240VAC, the unit ensures dependable fault clearing. It accommodates 14-1/0 AWG wire via included lugs.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | E2100-R |
| Series | E |
| Amperage | 100A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 125/250VDC |
| Phase | 1 |
| AIC Rating | 7kA @ 240VAC, 5kA @ 125/250VDC |
| Frame Type | E |
|---|---|
| Terminal Type | Lugs |
| For Use With | Westinghouse Panelboards, Eaton Panelboards |
| 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | NEMA AB-1, UL 489 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Standard Interrupting Capacity |
Product FAQs
4 answersWhat panelboards are compatible with the E2100 circuit breaker?
This molded case circuit breaker is designed for installation in legacy Westinghouse and Eaton panelboards that accept E-Frame bolt-on breakers.
What is the modern replacement for the legacy E2100 breaker?
The E2100 is part of the legacy Westinghouse E-Frame series. It is commonly cross-referenced with or replaced by the Eaton EHD2100 or EB2100, which offer higher interrupting capacities.
Can the E2100 be used in DC electrical systems?
Yes, while primarily used in 240VAC systems, this breaker is also rated for DC applications up to 125/250VDC with a 5kAIC interrupting capacity.
Are the trip settings on the E2100 adjustable?
No, this breaker features a thermal-magnetic trip unit with fixed long-time and fixed instantaneous trip functions. The settings cannot be adjusted in the field.
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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