Benshaw RMSO Overload Relay Ranges

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To determine the AMP range on any Benshaw RMSO thermal overload relay, simply take the smaller number on the dial and the largest number on the dial and that will be the AMP range. This is applicable to all Benshaw RMSO32, RMSO63 and RMSO95 overloads.  Be sure not to use the 32, 63 or 95 on the dial as that is simply the frame size designation to determine which contactors this overload would directly mount.  Once you have the AMP range, make sure that the motor's FLA (full load AMPS), falls within that range to ensure maximum motor protection.