Patent ID: 7983049
Filing Date: 2011-07-19
Classification: H05K,Y10S

Abstract:
1. Electrical field device for use in industrial control, comprising: a housing, at least one input, at least one output, and an electronic circuit which has a microcontroller, a memory and a circuit board, wherein an opening is formed on one side of the housing for insertion of an electronic expansion module which has at least one circuit board, wherein the circuit board of the electronic circuit has contacts in a contact region inside of the housing for mechanical and electrical contact-making with mating contacts connected to the circuit board of the expansion module, and wherein an open recess is formed in the circuit board of the electronic circuit such that clearances in air and creepage distances are maintained with respect to an inserted expansion module except in the contact region, so that reliable electrical isolation between the interior of the device and the user is ensured.