Conn breakaway retainer

Hi all,
Newby question of the day. Does anyone know what a Conn breakaway retainer is for? It came with some JST connectors. Little black pieces of plastic. Thanks!

Are you able to take a picture (and maybe annotate with circles and/or arrows) of what you are talking about?

You mean the TPA retainer ? (TPA = Terminal position assurance). Like the one below ?

They make sure that none of your contacts comes out when you apply force to it.

For the gory details:
http://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=1-1773863-1_TPA_White_Paper&DocType=DS&DocLang=EN

Yes
I think that’s what it is. Thank you for the reply

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