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Solving a KT7 Bus bar Mounting Challenge

Mounting KT7 Motor Controllers on the KT7-32 bus bar can be a challenge if you don’t use the right spacer. If you’re mounting KT7 Motor Controllers in a multiple motor starter panel, and hard wire connecting the line side of each, then the different height between the KTA7-25S and KTA7-25H is not an issue. However, when mounting in a multiple motor starter panel, and connecting the line side of each using compact bus bar, then the different heights pose a slight problem that is easily solved by using the KBH2 spacer.

Before the introduction of the improved KT7-32-DB compact bus bars, this difference in height was managed with the KT7-25-DB25H-54-2 jumper bus bar, which had a staggered bus system that was expensive to mold and produce. That device is obsolete.

The 25S to 25H jumper bus bar was replaced with the KBH2 spacer, a simple inexpensive piece of plastic that increases the height of KTA7-25S to match that of KTA7-25H. This allows the terminals to align at an even level and the redesigned compact bus bar fits nicely into both motor controllers. The KBH2 also aligns both controllers for mounting to a DIN rail. This inexpensive spacer made it possible to remove the staggered design on the new bus bar system, making it a straight and simple line that connects all size controllers seamlessly. This solution covers KTA7 or CL7 (KTA7 + CA7) but CK7 is a little different. The KBH2 is assembled on the second DIN rail position on the back of the CK7 assembly, not on the actual KTA7-25S. Regardless of which product used in the multiple motor panel, using bus bar assemblies are a snap.