Eaton / Cutler-Hammer L3350 Molded Case Circuit Breaker
- 350A
- 3 Pole
- Unit Mount
Quantity
Eaton / Cutler-Hammer L3350 - 350A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Built for industrial applications, the Eaton L3350 is a 3-pole, 350A legacy molded case circuit breaker. It delivers robust overcurrent defense for heavy-duty electrical systems. This unit mount breaker installs into older Westinghouse and Cutler-Hammer panelboards. For facilities upgrading infrastructure, this model is superseded by the Series C LD3350. Featuring a thermal-magnetic trip unit with adjustable magnetic settings, it offers flexible LI protection and a 30 kAIC rating at 480VAC.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | L3350-R |
| Series | L |
| Amperage | 350A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Westinghouse Panelboards, Cutler-Hammer Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | (2) 250-500 kcmil (Aluminum/Copper) |
| Max Wire | 500 kcmil |
| Min Wire | 250 kcmil |
| 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 | Includes Line and Load Lugs (TA600LA) |
| Standards | NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Interchangeable Trip Unit, HACR Rated |
Product FAQs
4 answersWhich panelboards are compatible with the L3350 circuit breaker?
This legacy L-frame breaker is engineered for unit-mount installation in older Westinghouse and Cutler-Hammer panelboards, switchboards, and motor control centers.
What is the direct modern replacement for the L3350?
For facilities upgrading their electrical infrastructure, the legacy L3350 has been superseded by the Eaton Series C LD3350 molded case circuit breaker.
What are the wire size requirements for the L3350 terminals?
The standard lugs accommodate two aluminum or copper conductors per phase, accepting wire gauges from 250 kcmil up to 500 kcmil.
Can the trip settings on the L3350 breaker be adjusted?
Yes. While the thermal long-time protection is fixed, the magnetic instantaneous trip settings are adjustable to allow for flexible overcurrent protection coordination.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
- JHJoel H.ReviewingWestinghouse L56D Contact BlockI recommend this productRated 5 out of 5 stars2/28/18Owner
Product was exactly as described, will use again in the future.