A drop-in solution for legacy systems, this 110A Square D MCCB comes with a 12VDC shunt trip for specialized remote tripping needs. It is built to handle rigorous industrial and commercial power distribution tasks. This K-Frame breaker mounts into Square D industrial control panels, enclosures, and switchboards. For modern upgrades, it is replaced by the HGL36110 using a specific retrofit kit. It offers a 25kAIC rating at 480VAC, adjustable magnetic trip, and the Visi-Trip indicator.
What does the 1039 suffix indicate on the KAL361101039 catalog number?
The 1039 suffix designates that this circuit breaker includes a factory-installed 12VDC shunt trip. This allows the breaker to be tripped remotely via an external 12VDC control signal.
Is the KAL361101039 still manufactured, or is there a modern replacement?
The KAL series is a legacy K-Frame breaker. For modern upgrades, it is typically replaced by a PowerPact H-Frame breaker, such as the HGL36110. Upgrading to the newer frame requires a specific retrofit kit to adapt to the existing mounting space.
How does the KAL361101039 perform in DC applications compared to its AC ratings?
While primarily used in AC systems up to 600VAC, this breaker is also rated for 250VDC applications. When used in DC circuits, the interrupting capacity is limited to 10kA, which must be factored into your short-circuit coordination study.
What types of enclosures or panels is this K-Frame breaker compatible with?
This unit-mount breaker is designed for installation in Square D industrial control panels, switchboards, and motor control centers that accommodate legacy K-Frame devices. It utilizes a feed-thru connection rather than an I-Line plug-on mount.
How is the instantaneous magnetic trip adjusted on this breaker?
The KAL361101039 features a dial on the front of the trip unit to adjust the magnetic trip threshold. This allows electricians to fine-tune the short-circuit response to coordinate with specific inrush currents or downstream devices.
Can the continuous current rating be adjusted on the KAL361101039?
No, the long-time thermal protection on this breaker is fixed at 110A. Only the instantaneous magnetic trip threshold is adjustable.
How does the integrated shunt trip enhance system safety?
The 12VDC shunt trip allows the breaker to be opened remotely by an external voltage signal. When the control voltage is applied to the shunt trip coil, it mechanically trips the breaker, making it ideal for emergency stop circuits or automated shutdown systems.
What are the physical mounting requirements for this breaker?
As a unit-mount, feed-thru circuit breaker, it is designed to be bolted directly to a mounting surface or backpan within the enclosure. It does not plug onto a busbar like an I-Line breaker, so proper physical clearance and tapped mounting holes are required.
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Customers rate this product 5.0 out of 5 based on 3 reviews.