KI36175 SQUARE D 3P 175A 600V 100KA I LINE

No — KI, KA, and KD are distinct frame sizes within the Square D I-Line family and are not interchangeable. The KI-frame covers ratings up to 400A at 600V. While all I-Line breakers share the same plug-in bus system, the physical frame dimensions and trip unit calibrations differ between frames, so you must match the frame to your panelboard's breaker space and bus rating. Always verify with your panelboard documentation before substituting.

Square D has transitioned many I-Line offerings to newer series over the years, and availability of specific catalogue numbers can vary. Northern Breaker Group specializes in obsolete and hard-to-find breakers, so even if the KI36175 is discontinued or on long lead time through standard channels, we can often source verified replacement stock. Contact our Calgary, Edmonton, or Vancouver counters for current availability.

The 100kA interrupting capacity at 600V is suitable for many industrial and commercial applications where available fault current is high — often at or near the service entrance of larger facilities. Under the Canadian Electrical Code (CEC), the breaker's interrupting rating must equal or exceed the maximum available fault current at the point of installation. You should have a qualified electrician or engineer perform a short-circuit study to confirm the available fault current at your panel before selecting any breaker.