Eaton / Cutler-Hammer L3225 LA3225 - 225A 3 Pole Molded Case Circuit Breaker
- 225A
- 3 Pole
- Unit Mount
Quantity
Eaton / Cutler-Hammer LA3225 - 225A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Serving as a critical component for power distribution, this 225A thermal-magnetic breaker delivers precise long-time and instantaneous protection. It integrates seamlessly into vintage Cutler-Hammer and Westinghouse switchboards requiring PB frame compatibility. Facility engineers benefit from its interchangeable trip design, which simplifies future system modifications. Operating at up to 600VAC, it maintains a solid 30kA interrupting rating at 480V to safeguard commercial electrical networks.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | L3225-R |
| Series | L |
| Amperage | 225A |
| 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 | 4 AWG-350 kcmil (Al/Cu) |
| Max Wire | 350 kcmil |
| Min Wire | 4 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 | Lugs |
| Standards | NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Interchangeable Trip Unit |
Product FAQs
7 answersAre the L3225 and LA3225 the same circuit breaker?
Yes, L3225 is a common shorthand catalog number for the LA3225. Both refer to the exact same legacy Westinghouse L-frame molded case circuit breaker, which is now supported by Eaton Cutler-Hammer.
Which distribution equipment is compatible with the LA3225?
This L-frame breaker mounts directly into legacy Westinghouse and Cutler-Hammer hardware, including PRL4 panelboards, switchboards, and motor control centers. It allows you to maintain older infrastructure without installing complex retrofit kits.
How is the thermal-magnetic trip unit configured on this breaker?
The LA3225 features an interchangeable trip unit with a fixed thermal element for overload protection and an adjustable magnetic dial. The adjustable magnetic setting allows electricians to fine-tune the instantaneous short-circuit response based on the specific load.
What are the wire size limits for the standard lugs?
The factory lugs accept aluminum or copper conductors from 4 AWG up to 350 kcmil. Ensure the wire is properly torqued and that the conductor insulation temperature rating meets local electrical codes for your application.
Can the trip unit be swapped out if the amperage requirements change?
Yes, the LA3225 utilizes an interchangeable trip unit design. If the load requirements of the circuit change, a qualified electrician can replace the trip unit to alter the continuous current rating without having to replace the entire breaker frame.
Can internal accessories be added to the LA3225 in the field?
Yes, accessories like shunt trips, auxiliary switches, and undervoltage releases can be field-installed. This requires opening the breaker housing, so the modification must be performed by a qualified technician while the breaker is completely de-energized.
What is the modern Eaton equivalent to the LA3225?
The legacy LA3225 has been superseded by the Eaton Series C LD3225. Note that replacing an LA3225 with an LD3225 in an older Westinghouse panelboard will generally require a specific retrofit hardware kit to adapt the new frame footprint.
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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.