Square D LAL363001021 Circuit Breaker
- 300
- 3 Pole
- Unit
Quantity
Square D LAL363001021 3 Pole Circuit Breaker
New
Quantity
Description
Square D LAL363001021 3 Pole Circuit Breaker
The Square D LAL363001021 is a 3 Pole thermal magnetic molded case circuit breaker with a current rating of 300 Amps and a voltage rating of 600VAC, 250VDC. It has an interrupting rating of 30kAIC at 480V. The LAL363001021 has a feed-thru connection type and includes long time and instantaneous trip functions.
Specifications
| Brand | Square D |
|---|---|
| Series | LA |
| Amperage | 300 A |
| Poles | 3 |
| Mounting Style | Unit |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| Frame Type | L |
|---|---|
| Terminal Type | Line and Load Side Lug |
| Trip Technology | Thermal Magnetic |
|---|
| Standards | RoHS, REACh, HACR |
|---|---|
| Approval | CSA, UL, IEC |
Product FAQs
12 answersWhat does the 1021 suffix mean on the Square D LAL363001021?
The 1021 suffix indicates that this circuit breaker includes a factory-installed 120/208/240 VAC shunt trip accessory.
What wire sizes are accepted by the lugs on the LAL363001021?
The standard line and load lugs accept either one 1 AWG to 600 kcmil aluminum or copper wire, or two 1 AWG to 250 kcmil aluminum or copper wires.
What are the interrupting ratings for the LAL363001021 at different voltages?
This breaker is rated for 42 kA at 240 VAC, 30 kA at 480 VAC, 22 kA at 600 VAC, and 10 kA at 250 VDC.
Is the LAL363001021 compatible with I-Line panelboards?
No, the LAL prefix indicates a unit-mount circuit breaker with line and load lugs. For an I-Line plug-on panelboard, you would need the I-Line version, such as the LA36300.
What is the modern replacement for the legacy LAL363001021 circuit breaker?
The legacy LA frame series has been replaced by the Square D PowerPact L-frame series. When upgrading, you will need a PowerPact L-frame breaker with a matching 300A rating and a field-installable shunt trip accessory, as the dimensions and mounting differ from the legacy LA series.
Does the LAL363001021 come with line and load lugs?
Yes, the LAL prefix designates that the breaker includes both line and load lugs factory-installed for feed-thru unit mounting.
Is the LAL363001021 suitable for DC applications?
Yes, this thermal-magnetic circuit breaker is rated for up to 250 VDC with an interrupting capacity of 10 kA.
How is the LAL363001021 mounted?
It is a unit-mount, feed-thru circuit breaker designed to be bolted directly to a mounting pan or enclosure backplate.
Can the LAL363001021 be used in motor control centers?
Yes, this unit-mount breaker is suitable for use in industrial enclosures, switchboards, and motor control centers that accommodate legacy LA frame breakers.
What is the purpose of the Push-to-Trip button on this breaker?
The Push-to-Trip feature allows you to manually trip the circuit breaker to verify the mechanical operation of the tripping mechanism without exposing yourself to live parts.
Is the LAL363001021 HACR rated?
Yes, this breaker is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment.
What type of trip unit does the LAL363001021 use?
It features a thermal-magnetic trip unit with fixed thermal protection for overloads and an adjustable magnetic trip for short-circuit protection.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 13 reviews.
- RGRobert G.Verified BuyerReviewingSquare D LA36400 - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/16/26LA36400
Perfectly boxed and arrived on time. Thanks for the shirt and stickers as well.
- CECraig E.Verified BuyerReviewingEaton / Cutler-Hammer LA3600 - 600A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars10/13/25Westinghouse breaker
Excellent customer service and quick shipping
- CLClifton L.Verified BuyerReviewingSquare D LA36400 - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/30/25estimator
Good
- BCBenjamin C.Verified BuyerReviewingEaton / Cutler-Hammer LA3225 - 225A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/4/25Refurbished Breaker
Breaker seems to be working great, no complaints from Client
- JMJerry M.ReviewingEaton / Cutler-Hammer LA3400 - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/14/23Where is my breaker?
Where is my breaker?