ABB – 1SNA631125R1500 (BRI 1621 N) – Decoupling Interface Module

The ABB part number 1SNA631125R1500 (type BRI 1621 N) is a DIN‑rail mounted decoupling interface module designed for industrial automation wiring systems. It features a pluggable screw‑clamp connection type, suitable for TH35 mounting rails, and provides a neat solution for signal isolation and relay interfacing in control cabinets.