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Square D KHL36250 Molded Case Circuit Breaker
- 250A
- 3 Pole
- Unit Mount
Square D
KHL36250
Molded Case Circuit Breaker
Brand
Square D
SKU
KHL36250
Quantity
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Square D KHL36250 - 250A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D KHL36250 - 250A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | KHL36250 |
| Series | KHL |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | KHL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Enclosures, Switchboards, Motor Control Centers |
| Wire Gauge | 4 AWG - 350 kcmil (Al/Cu) |
| Max Wire | 350 kcmil |
| Min Wire | 4 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, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Lugs (AL250KA) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity, HACR Rated |
Quantity
Square D KHL36250 - 250A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | KHL36250-R |
| Series | KHL |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | KHL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Enclosures, Switchboards, Motor Control Centers |
| Wire Gauge | 4 AWG - 350 kcmil (Al/Cu) |
| Max Wire | 350 kcmil |
| Min Wire | 4 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, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Lugs (AL250KA) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity, HACR Rated |
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Description
Engineered for industrial applications, the Square D KHL36250 provides reliable overcurrent protection in a rugged unit-mount design. This 3-pole, 250A molded case circuit breaker handles demanding 600VAC and 250VDC electrical systems. It installs into compatible Square D enclosures, switchboards, and motor control centers. As a legacy K-Frame component, it replaces older units, while new builds use the JGL36250. Features fixed thermal and adjustable magnetic trip elements with 65kAIC at 240V.Specifications
| Brand | Square D |
|---|---|
| Part Number | KHL36250 |
| Series | KHL |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | KHL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Enclosures, Switchboards, Motor Control Centers |
| Wire Gauge | 4 AWG - 350 kcmil (Al/Cu) |
| Max Wire | 350 kcmil |
| Min Wire | 4 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, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Lugs (AL250KA) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity, HACR Rated |
Product FAQs
8 answersWhat types of enclosures and panels are compatible with the KHL36250?
This unit-mount K-frame breaker is designed for installation in standard Square D enclosures, switchboards, and motor control centers that accept feed-thru wiring.
Is the KHL36250 an I-Line or unit-mount breaker?
The KHL36250 is a unit-mount (feed-thru) breaker that installs using standard line and load lugs. For the I-Line plug-on equivalent, you would need the KHA36250.
What is the magnetic trip adjustment range for this 250A breaker?
The KHL36250 features an adjustable magnetic trip with a range of 1250A (Low) to 2500A (High). The thermal trip is fixed at 250A.
What do the LI trip functions indicate on the KHL36250?
The LI designation means this thermal-magnetic breaker provides Long-Time (L) protection for standard overloads and Instantaneous (I) protection for short circuits.
What wire sizes and materials are accepted by the standard lugs on the KHL36250?
The standard AL250KA lugs accept one 4 AWG to 350 kcmil copper or aluminum conductor per phase.
What is the recommended tightening torque for the standard AL250KA lugs?
The wire binding screws on the standard AL250KA lugs should be torqued to 250 lb-in (28.2 Nm).
What is the modern replacement for the legacy KHL36250?
The Square D PowerPact J-frame series replaces the legacy K-frame. The JGL36250 is the direct modern equivalent, offering the same 250A rating, unit-mount design, and 35kAIC at 480V.
What safety precautions should be taken before installing the KHL36250?
Always de-energize the switchboard or motor control center before installation. Verify that the system voltage does not exceed the breaker's maximum rating of 600VAC or 250VDC, and ensure the available fault current does not exceed 35kA at 480V.
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