This is a used door catch handle and microswitch from a Bosch SRS43C12GB/21 dishwasher.

According to www.bosch-home.co.uk this will fit the following models:

SRS43C12GB/21

SRS43C12GB/23

This may be compatible with other models but please check first. 

This includes the microswitch (Part no: 00165926)

Thanks for looking.