What It Is and Where It Fits
The Siemens 6ES7928-5CA20-4AA0 is an enclosure cover for TP3 32-bit connection modules, sold in a VPE of 4 units. It belongs to the SIMATIC S7-300 family of I/O and connection hardware, specifically the Ordering Data Overview product family. This is the plastic cover that snaps onto the front of a TP3 connection module once wiring is complete, protecting the 32-bit terminal block and maintaining the IP2x finger-safe rating of the assembly. The part carries Group Code R315 and Product Group 9394, which are Siemens internal cataloging codes used for cross-referencing in the Industry Mall and spare-parts lists. If you are maintaining a cabinet with TP3 modules, this is the correct cover for the 32-bit variant.
Sourcing and Lifecycle Reality
The packaging dimensions are 10.00 x 19.00 x 22.5 cm for the VPE of 4 units. The export control classification is AL: N / ECCN: N, meaning no special export license is required for most destinations.
Compliance and Documentation
The part has been RoHS compliant since 26 September 2014. Under REACH Article 33, it contains lead (CAS 7439-92-1) above 0.1% w/w on the candidate list. This is standard for many Siemens industrial connectors and covers — the lead is typically in the brass contacts or solder points inside the module, not in the plastic cover itself, but the declaration applies to the entire assembled unit. If you are shipping into a jurisdiction that enforces REACH downstream notification, factor this into your supplier communication.