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Eaton / Cutler-Hammer LA3100 Molded Case Circuit Breaker
- 100A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
LA3100
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
LA3100
Quantity
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Eaton / Cutler-Hammer LA3100 - 100A 3 Pole Molded Case Circuit Breaker
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Description
Part of Eaton's legacy LA series, the LA3100 is a 3-pole, 100A molded case circuit breaker designed for commercial and industrial applications. This unit bolts into Westinghouse PRL4 panelboards and motor control centers. It serves as a cross-reference for HLD3100 and KD3100 models, and is officially replaced by the Series C LD3100. Rated at 30 kAIC at 480VAC, it features an interchangeable thermal-magnetic trip unit with adjustable magnetic settings for precise protection.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | LA3100 |
| Series | LA |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | LA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Westinghouse PRL4 Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 1 AWG - 600 kcmil (Al/Cu) or (2) 1 AWG - 250 kcmil (Al/Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 1 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Interchangeable Trip Unit |
Product FAQs
5 answersWhat equipment is the Eaton LA3100 compatible with?
This bolt-on breaker is designed for use in Westinghouse PRL4 panelboards, as well as compatible switchboards and motor control centers.
What wire sizes do the standard lugs on the LA3100 accept?
The terminals accommodate aluminum or copper wire ranging from 1 AWG to 600 kcmil. They can also accept two wires ranging from 1 AWG to 250 kcmil.
Does the LA3100 feature adjustable trip settings?
Yes, this thermal magnetic breaker features a fixed thermal element for overload protection and an adjustable magnetic element, allowing you to tune the instantaneous short-circuit trip point.
Can the LA3100 be used in direct current systems?
Yes, this breaker is rated for DC applications up to 250VDC, providing a 10kA interrupting capacity for direct current circuits.
Is the LA3100 an obsolete or legacy breaker?
The LA3100 is part of Eaton's legacy LA series. While exact replacements are still sourced for maintenance, it is officially replaced by the Series C LD3100 for new installations. It also serves as a cross-reference for HLD3100 and KD3100 models.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 13 reviews.
Total 5 star reviews: 13 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
13 reviews
- RGRobert G.Verified BuyerReviewingSquare D LA36400 - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/16/26LA36400
Perfectly boxed and arrived on time. Thanks for the shirt and stickers as well.
- CECraig E.Verified BuyerReviewingEaton / Cutler-Hammer LA3600 - 600A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars10/13/25Westinghouse breaker
Excellent customer service and quick shipping
- CLClifton L.Verified BuyerReviewingSquare D LA36400 - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/30/25estimator
Good
- BCBenjamin C.Verified BuyerReviewingEaton / Cutler-Hammer LA3225 - 225A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/4/25Refurbished Breaker
Breaker seems to be working great, no complaints from Client
- JMJerry M.ReviewingEaton / Cutler-Hammer LA3400 - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/14/23Where is my breaker?
Where is my breaker?