Designed for heavy-duty commercial use, the Square D KHL36150 is a 3-pole, 150-amp molded case circuit breaker providing essential LI overcurrent protection. This unit-mount device fits seamlessly into Square D switchboards and enclosures. For facilities modernizing equipment, this legacy model is replaced by the JGL36150. Equipped with an adjustable magnetic trip, it allows for precise coordination. It boasts a 65 kAIC rating at 240VAC and is HACR rated for HVAC equipment.
What is the modern replacement for the legacy KHL36150 circuit breaker?
For facilities modernizing their electrical infrastructure, this legacy K-frame breaker is typically replaced by the PowerPact J-frame JGL36150. Upgrading to a newer frame style may require mounting adapters or panel modifications.
What types of equipment are compatible with the KHL36150?
This unit-mount circuit breaker is designed for installation in standard Square D enclosures, switchboards, and motor control centers. It features a feed-thru connection and is not compatible with I-Line panelboards.
What does the H in the KHL frame designation signify?
The H indicates that this is a high-interrupting capacity breaker within the Square D K-frame family. It delivers a 35 kAIC rating at 480VAC, offering higher fault current protection than standard KAL or KCL models.
How is the trip unit configured on the KHL36150?
This breaker utilizes a thermal-magnetic trip unit with a fixed thermal element for long-time overcurrent protection and an adjustable magnetic element. The adjustable magnetic trip allows electricians to fine-tune the instantaneous short-circuit response for precise system coordination.
Can the KHL36150 circuit breaker be reverse fed?
Yes, standard thermal-magnetic K-frame breakers can generally be reverse fed. Because it does not have dedicated line and load markings, power can be supplied to either the top or bottom lugs.
Is the KHL36150 rated for HVAC applications?
Yes, this breaker is HACR rated, meaning it is certified for use with heating, air conditioning, and refrigeration equipment, as well as group motor applications.
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