Square D LAL36350-1021 Molded Case Circuit Breaker
- 350A
- 3 Pole
- Unit Mount
Quantity
Square D LAL36350-1021 - 350A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Designed for remote tripping, the Square D LAL36350-1021 is a 3-pole, 350A MCCB. It features a factory-installed 120-240VAC shunt trip, allowing the breaker to be opened remotely via an external voltage signal. This unit mount breaker installs into Square D switchboards and motor control centers. It is replaced by the PowerPact LJL36350, which also requires a shunt trip accessory. Delivering 42kAIC at 240VAC, it provides thermal-magnetic protection with adjustable magnetic trip settings.Specifications
| Brand | Square D |
|---|---|
| Series | LAL |
| 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 |
| Frame Type | LAL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D 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 | Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Shunt Trip |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Product FAQs
7 answersWhat does the -1021 suffix mean on the LAL36350-1021 circuit breaker?
The -1021 suffix indicates that this breaker includes a factory-installed 120/240VAC shunt trip accessory. This allows the breaker to be tripped remotely by applying a voltage signal to the shunt trip coil.
What wire sizes are accepted by the standard lugs on the LAL36350-1021?
The factory lugs accommodate either a single large conductor from 1 AWG to 600 kcmil, or dual smaller conductors from 1 AWG to 250 kcmil per phase. They are rated for both aluminum and copper wiring.
Is the LAL36350-1021 compatible with Square D I-Line panelboards?
No, the LAL36350-1021 is a unit-mount breaker designed for hardwired installations in industrial enclosures, switchboards, and motor control centers. I-Line panelboards require breakers with plug-on jaw connections.
Can the LAL36350-1021 be used in DC power systems?
Yes, this thermal-magnetic breaker is rated for use on DC systems up to 250VDC, providing a DC interrupting rating of 10kAIC.
How do I adjust the trip settings on the LAL36350-1021?
This breaker features a fixed thermal element for long-time overload protection and an adjustable magnetic element for instantaneous short-circuit protection. The magnetic trip threshold can be adjusted using the dial on the front of the breaker to coordinate with your specific fault current requirements.
How can I safely test the mechanical tripping operation of the LAL36350-1021?
Square D L-frame breakers include a push-to-trip button on the front face. Pressing this button allows you to manually trip the breaker and verify the mechanical linkage is operating correctly without exposing yourself to live electrical components.
What frame size is the LAL36350-1021?
This breaker is part of the Square D L-Frame series. The legacy L-Frame family typically covers applications ranging from 125A to 400A and shares standardized dimensions for easier panel retrofits.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 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.