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Square D LAL26250MB Molded Case Circuit Breaker
- 250A
- 2 Pole
- Unit Mount
Square D
LAL26250MB
Molded Case Circuit Breaker
Brand
Square D
SKU
LAL26250MB
Quantity
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Square D LAL26250MB - 250A 2 Pole Molded Case Circuit Breaker
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Description
Built with a specialized short handle (MB suffix), the Square D LAL26250MB is a 2-pole, 250A molded case circuit breaker. This configuration ensures standard panel doors can close without interference. The unit-mount device installs into industrial enclosures and switchboards. When retrofitting, it is replaced by the LGL36250, though handle clearance must be verified. It delivers reliable LI protection with an adjustable magnetic trip, HACR rating, and 42kAIC capacity at 240VAC.Specifications
| Brand | Square D |
|---|---|
| Part Number | LAL26250MB |
| Series | LAL |
| Amperage | 250A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | LAL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Industrial Enclosures, Switchboards, Motor Control Centers |
| 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, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Lugs (Line and Load), Short Handle (Suffix MB) |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Short Handle, Trip-Free Mechanism |
Product FAQs
7 answersWhat does the MB suffix indicate on the Square D LAL26250MB circuit breaker?
The MB suffix designates a factory-installed short operating handle. This shorter lever actuator allows panel doors to close properly when the breaker is installed in shallow industrial enclosures or switchboards.
What wire sizes are compatible with the lugs on the LAL26250MB breaker?
The standard lugs accept either one 1 AWG to 600 kcmil aluminum or copper wire, or two 1 AWG to 250 kcmil aluminum or copper wires per phase.
Does the LAL26250MB include a push-to-trip feature?
Yes, this breaker includes a push-to-trip button. This allows you to manually trip the breaker for testing the mechanical linkage without exposing yourself to live electrical parts.
Is the trip unit on the LAL26250MB adjustable?
This thermal-magnetic breaker features a fixed thermal trip for overload protection and an adjustable magnetic trip for short-circuit protection.
How is the LAL26250MB circuit breaker mounted?
This is a unit-mount, feed-thru circuit breaker. It is designed to be bolted directly into compatible industrial enclosures, motor control centers, and switchboards rather than plugging into an I-Line busway.
What is the modern replacement for the legacy Square D LAL series breakers?
The legacy LAL frame breakers are typically replaced by the newer Schneider Electric PowerPacT L-frame series. When retrofitting, always verify that the new breaker dimensions and handle clearances match your existing enclosure.
Is the LAL26250MB suitable for HVAC applications?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment.
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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.