does it correct? If it is correct does I can do it better?
The selected components seem correct with improvements recommended in other answers.
You should review the thermal trip setting range of the Schneider GV2ME08. The minimum of the setting range should be no higher than the motor current rating.
Will my conveyor do twitch? Do I need use frequency regulator for smooth start?
The conveyor will probably accelerate to full speed in about a second. That may see quite sudden, but relatively smooth. The need for a frequency regulator, variable frequency drive (VFD), will be determined by the sensitivity of the load. Most such conveyors don't require a VFD, but the need will be difficult to predict.
You should also consider how often the conveyor will be started and stopped. You need to define the action of the conveyor in detail and be sure that you don't need more that the one sensor to get the desired action.
Circuit Breaker Selection and Setting
Based on the table and curves below, I would select the GV2ME05 and set the trip slightly below the maximum setting. The GV2ME06 might be ok with the setting at minimum.
The magnetic trip allows about 15 X setting current. The thermal trip allows 15 X setting current for about 0.7 to 2 seconds and trips in about 10 to 50 seconds at 2 X setting current. The thermal mechanism will not trip below about 1.25 X the setting current. I believe the setting should be at the motor rated current or even slightly below to assure protection from long-term overload or excessive starting and stopping.
The conveyor speed can be calculated from known gear ratio and the main roll diameter. Tomato boxes may slip a little when the conveyor starts, but it seems very unlikely that they would tip over. The acceleration force in unlikely to bruise the tomatoes.
At 1400 RPM, the motor has higher slip than average. The maximum starting current will be less than average. The starting torque will be maximum at standstill and drop steadily as the motor accelerates. The motor has been selected for full-voltage starting, not for use with a VFD.