What it is and what it does
The Siemens 6ES7928-3EA20-4AA0 is a relay for TPRI with a 110 V AC coil voltage, sold in a packing unit of 4 units. Classified under Group Code R315 and Product Group 9394, this relay is a standard-order item produced to order — not a stocked shelf part, so lead time applies.
Compliance and documentation
RoHS compliant since 26-09-14, with a REACH Article 33 declaration that lead (CAS 7439-92-1) exceeds 0.1% w/w in the product. Export control is AL: N / ECCN: N, so no special licensing is needed for cross-border shipment.
Sourcing and lifecycle reality
Because this is Product class C — manufactured to order — it's not a returnable or stockable item. Each order triggers a production run, so plan for the manufacturer's lead time rather than expecting off-the-shelf availability. Mature lifecycle stage; no end-of-life notice is listed. No official successor is documented.