Can I replace an AS-H827-103 primary 27" housing with an AS-H827-209 primary 27" housing?



No. Both are 27" primary housings. The H827-103 is the remote I/O housing. The H827-209 is the local housing for the PLC. The H827-103 has a J890 which will not fit into the H827-209 housing. Therefore, the H827-209 can not be used as a replacement for the H827-103 housing.