Square D KHL26150 Molded Case Circuit Breaker
- 150A
- 2 Pole
- Unit Mount
Quantity
Square D KHL26150 - 150A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Designed for heavy-duty commercial environments, the Square D KHL26150 is a 2-pole, 150A molded case circuit breaker. It features fixed thermal and adjustable magnetic trip settings for precise LI protection. This unit-mount breaker installs into compatible Square D enclosures and motor control centers. Facilities looking to upgrade can replace this legacy K-Frame model with the PowerPacT JJL26150. It is rated for 600VAC and 250VDC, offering a 35kAIC rating at 480VAC and HACR certification.Specifications
| Brand | Square D |
|---|---|
| Part Number | KHL26150 |
| Series | KHL |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 1 |
| 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 | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Trip-Free Mechanism |
Product FAQs
7 answersWhat equipment is the Square D KHL26150 designed to be installed in?
This 150A K-Frame breaker is compatible with Square D enclosures, switchboards, and motor control centers.
Can the KHL26150 be used in 480V systems with high fault current?
Yes, it provides a 35kA interrupting rating (AIC) at 480VAC, making it suitable for many commercial and industrial 480V applications. It also offers up to 65kAIC at 240VAC and 25kAIC at 600VAC.
What wire sizes and materials are supported by the KHL26150 lugs?
The standard feed-thru lugs on this breaker accept both aluminum (Al) and copper (Cu) conductors ranging from 4 AWG up to 350 kcmil.
How does the thermal-magnetic trip unit on the KHL26150 operate?
It provides standard LI (Long-Time, Instantaneous) protection. The thermal (long-time) element is fixed at 150A, while the magnetic (instantaneous) element is adjustable to allow coordination with downstream devices.
Is the KHL26150 an I-Line or unit-mount circuit breaker?
The KHL26150 is a unit-mount, feed-thru circuit breaker. It is designed to be bolted or surface-mounted rather than plugging into an I-Line panelboard bus.
Is the KHL26150 part of a current or legacy Square D product line?
This breaker belongs to the Square D Legacy MCCB family (K-Frame). It is typically sourced for maintenance, replacements, or retrofits in existing electrical infrastructure.
Can the KHL26150 be used in DC applications?
Yes, in addition to its AC ratings (up to 600VAC), this breaker is rated for use in DC systems up to 250VDC with a 10kA interrupting capacity.
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