Part of the legacy K-frame lineup, the Square D KIL26150 delivers 150A of current-limiting protection for commercial and industrial power distribution. It installs into Square D enclosures, switchboards, and motor control centers using a standard unit mount configuration. Featuring thermal-magnetic trip technology with adjustable magnetic settings, this two-pole breaker provides an exceptional 200kAIC rating at 480V. It is replaced by the JRL26150.
What equipment is the Square D KIL26150 designed to mount in?
This legacy K-frame breaker is engineered for installation in Square D enclosures, switchboards, and motor control centers.
What is the modern replacement for the KIL26150 circuit breaker?
For new installations or upgrades, the legacy KIL26150 is replaced by the PowerPact J-frame series, specifically catalog number JRL26150.
What wire sizes and materials are compatible with the terminals on this breaker?
The factory-installed line and load lugs accept both aluminum and copper conductors ranging from 4 AWG to 350 kcmil.
Are the trip settings adjustable on the KIL26150?
The thermal-magnetic trip unit features a fixed thermal element for long-time overload protection and an adjustable magnetic element for instantaneous short-circuit response.
Does the KIL26150 provide current-limiting protection?
Yes, the KIL frame is a current-limiting molded case circuit breaker designed to restrict let-through fault current, offering a high interrupting capacity of 200kA at 480V.
What does the unit mount and feed-thru configuration mean for installation?
As a unit mount, feed-thru breaker, it is designed to be individually mounted and wired directly via the line and load lugs, rather than plugging into a distribution busbar.
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