Westinghouse LA3600KW Circuit Breaker
- 600A
- 3 Pole
- Panel Mount
Quantity
Westinghouse LA3600KW 3 Pole Circuit Breaker
Re-Certified
Quantity
Description
Westinghouse LA3600KW 3 Pole Circuit Breaker
The Westinghouse LA3600KW is a 3 Pole non-automatic molded case circuit breaker with a current rating of 600 Amps and a voltage rating of 600V. It has an interrupting rating of 30kAIC at 480V. The LA3600KW has a bolt-on connection type and includes no overcurrent protection functions.
Specifications
| Brand | Westinghouse |
|---|---|
| Series | LA |
| Amperage | 600A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 600VAC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC |
Product FAQs
6 answersWhat is the difference between the LA3600KW and a standard LA3600 breaker?
The LA3600KW is a non-automatic molded case switch, meaning it functions solely as a disconnect and provides no overcurrent protection. A standard LA3600 is a thermal-magnetic circuit breaker equipped with a trip unit to clear overloads and short circuits.
Which panelboards accept the LA3600KW molded case switch?
This bolt-on device fits legacy Westinghouse, Cutler-Hammer, and Eaton switchboards and motor control centers designed for LA-frame components.
Does the LA3600KW require upstream overcurrent protection?
Yes. Because it lacks a trip unit, this non-automatic switch must be installed in series with properly sized fuses or a circuit breaker to protect the downstream circuit from overloads and fault currents.
Can this 600V molded case switch be applied to 480V systems?
Yes. It is rated for up to 600V and can be safely used on 480V systems, provided the available fault current does not exceed its 30kAIC interrupting rating at 480V.
Are Westinghouse, Cutler-Hammer, and Eaton LA3600KW switches interchangeable?
Yes. Eaton acquired the Westinghouse and Cutler-Hammer distribution equipment lines. LA-frame devices under all three brand names share the same physical dimensions and mounting hardware, making them direct drop-in replacements.
What are the safety requirements for isolating circuits with a non-automatic switch?
Since the LA3600KW does not trip during a fault, electricians must verify that upstream overcurrent protection is active. Always lock out and tag out the upstream breaker or fused disconnect before servicing equipment connected to this switch.
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Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 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?