Siemens – 5WG1191‑5AB01 – REG 191/01 Dual-Bus KNX/EIB Rail Connector

The Siemens 5WG1191‑5AB01 (REG 191/01) is a DIN‑rail mounted KNX/EIB bus connector designed to couple and manage two independent KNX trunk lines. It ensures reliable bus voltage distribution, isolation, and secure termination within modular KNX installations.

Key Features:

• Model / Part Number: REG 191/01 / 5WG1191‑5AB01  

• Function: Dual-bus KNX/EIB data rail connector

• Mounting: DIN‑rail; modular form factor (approx. 95×30×80 mm)  

• Bus Lines: Connects two separate KNX/EIB trunk cables

• Isolation: Provides galvanic separation between bus lines for network segments

• Status Markings: Labeled terminals and trunk direction icons (front, side)  

• Certifications: CE marked; UL listed as EIB accessory  

• Weight: ≈55 g ()