This connector features an insulated tip to stop big sparks from higher voltage applications. This coupled with the plastic self insulating shroud offers a safe and affective connector package with no shrink tube needed.
When powering on, please connect the plug without yellow collar first, and then connect the plug wth yellow collar.
There is a Aniti Spark Protector in plug with yrllow collar. (Please refer to the picture below.)
Please check picture below.