Square D LAL34225MC1380 Molded Case Circuit Breaker
- 225A
- 3 Pole
- Unit Mount
Square D
LAL34225MC1380
Molded Case Circuit Breaker
Brand
Square D
SKU
LAL34225MC1380
Quantity
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Square D LAL34225MC1380 - 225A 3 Pole Molded Case Circuit Breaker
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Description
Built for demanding industrial applications, the Square D LAL34225MC1380 is a 3-pole, 225A molded case circuit breaker. It features mission critical calibration to handle high inrush currents without nuisance tripping. This unit mount breaker installs into Square D industrial enclosures and switchboards. The "1380" suffix indicates a factory-installed 120VAC shunt trip and 1A/1B auxiliary switch. Rated 42kAIC at 240V, it provides adjustable magnetic trip protection.Specifications
| Brand | Square D |
|---|---|
| Series | LAL |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC |
| Frame Type | LAL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Industrial Enclosures, Switchboards |
| Wire Gauge | (1) 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, IEC 60947-2, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Product FAQs
8 answersWhat does the "MC" suffix indicate on the LAL34225MC1380?
The "MC" suffix indicates that the circuit breaker features Mission Critical calibration. This specialized calibration is designed to support high magnetic withstand requirements, making it suitable for data centers, healthcare facilities, and other critical power applications.
What does the "1380" suffix mean on this Square D breaker?
The "1380" suffix denotes that the breaker comes with a factory-installed 120VAC shunt trip and a 1A/1B auxiliary switch. This configuration allows for remote tripping and circuit status monitoring.
Can I install the LAL34225MC1380 in an I-Line panelboard?
No. The LAL34225MC1380 is a unit-mount, feed-thru circuit breaker designed for use in industrial enclosures and switchboards. It does not have the plug-on jaw connections required for I-Line panelboards.
Is the trip unit on the LAL34225MC1380 interchangeable?
No. This legacy L-Frame circuit breaker features a non-interchangeable thermal-magnetic trip unit. The thermal element is fixed, while the magnetic instantaneous trip setting is adjustable.
What is the modern replacement for the legacy LAL34225MC1380?
The Square D LAL series is a legacy L-Frame product. For new installations or modern upgrades, it is typically replaced by the Schneider Electric PowerPacT J-Frame or L-Frame series, depending on the specific enclosure and accessory requirements.
Does this breaker provide ground fault protection?
No. The LAL34225MC1380 features a standard thermal-magnetic trip unit with long-time and instantaneous (LI) protection only. It does not include integral ground fault equipment protection (GFEP) or short-time (S) protection functions.
How do I test the shunt trip function on the LAL34225MC1380?
To test the factory-installed 120VAC shunt trip, apply the rated 120V control voltage to the shunt trip coil leads while the breaker is in the closed (ON) position. The breaker should immediately trip, and the handle will move to the center tripped position.
What is the purpose of the 1A/1B auxiliary switch included with this breaker?
The 1A/1B auxiliary switch provides remote signaling of the breaker's contact status. The A contact is normally open (NO) and closes when the breaker is ON, while the B contact is normally closed (NC) and opens when the breaker is ON. This is used for indicator lights, alarms, or interlocking with other control systems.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 7 reviews.
Total 5 star reviews: 7 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
7 reviews
- MBmike b.Verified BuyerReviewingSquare D LAL36350 - 350A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/15/26LAL36350MB
OLINE ORDERING WAS EASY AND I RECEIVED THE BREAKER QUICKLY
- GCGlenn C.Verified BuyerReviewingSquare D LAL36400 - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars2/27/26Breaker
I like the great price. Great service
- MIMarietta I.Verified BuyerReviewingSquare D LAL36400 - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/27/26Great service
Received the breakers in time. My account mgr Mike is awesome.
- TBTerry B.Verified BuyerReviewingSquare D LAL36400 - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/5/26RECERTIFIED BREAKER
Breaker was received in good condition and seems to work correctly
- LBLISA B.Verified BuyerReviewingSquare D LAL36400 - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/28/25good [product
Expeditious delivery, great product and amazing customer service.