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Square D LH36250 Molded Case Circuit Breaker
- 250A
- 3 Pole
- I-Line
Square D
LH36250
Molded Case Circuit Breaker
Brand
Square D
SKU
LH36250
Quantity
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Square D LH36250 - 250A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D LH36250 - 250A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | LH36250 |
| Series | LH |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 50kA @ 250VDC |
| Frame Type | LH |
|---|---|
| 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 | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Lugs (AL400LA) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Push-To-Trip |
Quantity
Square D LH36250 - 250A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | LH36250-R |
| Series | LH |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 50kA @ 250VDC |
| Frame Type | LH |
|---|---|
| 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 | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Lugs (AL400LA) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Push-To-Trip |
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Description
Engineered for commercial and industrial power distribution, this 3-pole, 250A molded case circuit breaker belongs to the legacy Square D L-Frame series. It provides long-time and instantaneous (LI) thermal-magnetic trip functions. Designed for Square D I-Line panelboards and switchboards, it utilizes a plug-on I-Line mounting style. This legacy breaker is replaced by the JGA36250, which requires an HNM1BL filler plate. Rated for 35kAIC at 480VAC, it includes a push-to-trip mechanism.Specifications
| Brand | Square D |
|---|---|
| Part Number | LH36250 |
| Series | LH |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 50kA @ 250VDC |
| Frame Type | LH |
|---|---|
| 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 | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Lugs (AL400LA) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Push-To-Trip |
Product FAQs
6 answersWhat is the difference between the Square D LA36250 and LH36250 circuit breakers?
Both are 250A, 3-pole legacy L-frame breakers, but the LH36250 features a higher interrupting capacity. The LH36250 is rated for 35kA at 480VAC, while the standard LA series has a lower short-circuit current rating.
What is the modern replacement for the legacy LH36250 circuit breaker?
The LH36250 is a legacy L-frame breaker that has been replaced by the PowerPact J-frame series, specifically the JGA36250. When upgrading to the JGA36250 in an existing I-Line panelboard, an HNM1BL filler plate is required to properly fit the panel space.
What is the magnetic trip range for the LH36250 circuit breaker?
The LH36250 features a fixed thermal and adjustable magnetic trip unit. The instantaneous magnetic trip can be adjusted between 1250A and 2500A to coordinate with specific system fault requirements.
How can I manually test the mechanical operation of the LH36250?
The breaker includes a built-in push-to-trip button on the front face. Pressing this button manually trips the breaker mechanism without exposing the operator to live electrical parts, allowing for safe verification of the mechanical linkage.
How does the LH36250 connect to the panelboard bus?
The LH36250 utilizes a plug-on I-Line connection on the line side, which snaps directly onto the panel bus assembly. The load side uses standard mechanical lugs for wire termination. It is designed specifically for Square D I-Line panelboards and switchboards.
Can I use the LH36250 in a standard unit-mount enclosure?
No. The LH36250 is an I-Line style plug-on breaker designed exclusively for I-Line panelboards and switchboards. For a unit-mount application, you would need the LHL36250, which features lugs on both the line and load sides.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
Total 5 star reviews: 2 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
2 reviews
- MLMatthew L.Verified BuyerReviewingSquare D LH36400 - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/21/26Super Breakers Does It Again!
New, in excellent condition, cheaper and faster than the competition
- MGMarkus G.Verified BuyerReviewingSquare D LH36400 - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/4/25it states correctly what it was
Product as described