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Is it normal of the slot position 5° variation of Ring Mount 2 Position LBS?

Is it normal of the slot position 5° variation of Ring Mount 2 Position LBS?

9/20/2024

We received feedback from customers that the slot position of their 2-position load switch was not exactly 90°, but had a deviation of 5°, so we consulted the Eaton Cooper factory on this issue. The specific details are as follows:

 

First of all, to answer the customer's question, this 5° deviation is normal, and it was like this when the product was first designed.

 

This 5° rotation is present on different types of switches and is an attempt to compensate the backlash that occurs in the assembly between the switch, tank wall, installation kit and handle (see attached videos for reference, I took the worst cases to make it more evident).

 

Backlash is unavoidable due to variations in the raw material manufacturing process, tolerances, and wear.

 

In the case of 2 Position Load Break Switch the bushing is rotated with the intention of improving the interaction and perception of the user, with this NIB rotation the backlash is compensated and the switch mechanism will start to move when the indicator/handle is at 0°(as you can see in the video… the mechanism will start to move at 0° even if the switch inside of the tank is misaligned).

 

In summary:

That the switch is not perfectly aligned inside the tank does not represent any risk, it will only be noticed at the time of installation, this has always been part of the design and if you want to double check if this represents any risk it is recommended to perform the complete installation of the switch and validate the functionality considering all the components.

If you have any problem in the final assembly or if this is a special application let me know.