Square D LA36150-1021 LA361501021 - 150A 3 Pole Molded Case Circuit Breaker
- 150A
- 3 Pole
- I-Line
Quantity
Square D LA361501021 - 150A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built for industrial applications, the Square D LA36150-1021 is a 150A molded case circuit breaker. It features a factory-installed 120-240VAC shunt trip for remote tripping and enhanced control. This L-Frame breaker installs into Square D I-Line panelboards and switchboards. For newer installations, it is replaced by the PowerPacT J-Frame JJA36150SA. Rated for 600VAC, it provides 30 kAIC at 480V. The unit includes an adjustable magnetic trip and a visual trip indicator.Specifications
| Brand | Square D |
|---|---|
| Series | LA |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | L |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and 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 | Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (120-240VAC) |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
6 answersWhat does the 1021 suffix indicate on the LA36150-1021 breaker?
The 1021 suffix signifies that the breaker comes with a factory-installed 120/240V AC shunt trip, allowing for remote tripping of the circuit breaker.
What type of panelboard is required for the LA36150-1021?
This breaker features an I-Line plug-in connection and is specifically designed for installation in Square D I-Line panelboards and switchboards. It will not fit standard unit-mount or load center panels.
What are the wire size limits for the lugs on the LA36150-1021?
The terminal lugs can accommodate either a single 1 AWG to 600 kcmil wire or dual 1 AWG to 250 kcmil wires per phase. Both aluminum and copper conductors are supported.
How is the trip unit configured on the LA36150-1021?
It utilizes a thermal-magnetic trip unit with a fixed thermal element for long-time overload protection and an adjustable magnetic element for instantaneous short-circuit protection.
Is the LA36150-1021 suitable for direct current systems?
Yes, it is rated for use in DC systems up to 250V DC, providing an interrupting rating of 10 kAIC at that voltage.
How can I safely test the mechanical operation of the LA36150-1021?
Square D LA frame breakers feature a push-to-trip button on the front. This allows you to manually trip the breaker and verify the mechanical linkage is functioning properly without exposure to live electrical parts.
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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?