Free Shipping Over $99
Eaton / Westinghouse LM3225 Molded Case Circuit Breaker
- 225A
- 3 Pole
- Bolt-On
Eaton / Westinghouse
LM3225
Molded Case Circuit Breaker
Brand
Eaton / Westinghouse
SKU
LM3225
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Eaton / Westinghouse LM3225-R - 225A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Similar Items
300A 3 Pole Molded Case Circuit Breaker
350A 3 Pole Molded Case Circuit Breaker
400A 3 Pole Molded Case Circuit Breaker
Description
Manufactured for commercial and industrial power distribution, this 225A Eaton / Westinghouse molded case circuit breaker restores functionality to legacy systems. The bolt-on design installs into classic Westinghouse panelboards, switchboards, and motor control centers, acting as an exact substitute for KD3225 and LD3225 breakers. It delivers 18kAIC at 480VAC and utilizes an interchangeable thermal-magnetic trip unit with long-time and instantaneous (LI) functions.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | LM3225-R |
| Series | LM |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Westinghouse Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 6 AWG-350 kcmil |
| Max Wire | 350 kcmil |
| Min Wire | 6 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 | Load Side Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Interchangeable Trip Unit |
Product FAQs
7 answersWhat type of enclosures or panels accept the LM3225 breaker?
The LM3225 is a Series C L-Frame breaker designed specifically for bolt-on installation in legacy Westinghouse panelboards, switchboards, and motor control centers.
Does the LM3225 come with mounting hardware and terminals?
This breaker includes load side lugs that accept 6 AWG to 350 kcmil wire. It is a bolt-on unit, meaning the line side bolts directly to the panel buswork. Mounting hardware for the bus connection is typically sourced with the panel or reused from the breaker being replaced.
How does the adjustable magnetic trip function work on the LM3225?
The thermal-magnetic trip unit features a fixed thermal element for overload protection and an adjustable magnetic element for short-circuit (instantaneous) protection. This allows electricians to fine-tune the instantaneous trip threshold to coordinate with other protective devices in the system and prevent nuisance tripping.
Is the Eaton LM3225 the same as the Westinghouse LM3225?
Yes. Eaton acquired the Westinghouse electrical distribution division, so an Eaton LM3225, Cutler-Hammer LM3225, and Westinghouse LM3225 are the exact same Series C L-Frame breaker and can be used interchangeably.
What industry safety standards does the LM3225 comply with?
This molded case circuit breaker is built to meet UL 489, NEMA AB-1, and CSA C22.2 No. 5 standards for safe operation in commercial and industrial power distribution systems.
Can the LM3225 be used in both AC and DC electrical systems?
Yes, this breaker is rated for use in both alternating current (up to 600V AC) and direct current (up to 250V DC) applications. It provides a 10kA interrupting capacity when applied in 250V DC systems.
Does the LM3225 feature an interchangeable trip unit?
Yes, the LM3225 is built with an interchangeable thermal-magnetic trip unit. This allows panel builders and electricians to modify the breaker's trip characteristics in the future without needing to replace the entire breaker frame.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
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.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.