Siemens5WG1140-1AB02KNX / instabus EIB Line and Backbone Coupler, Filter Table, Galvanically Isolated, DIN Rail N-System

Product Description

What this part is:

Siemens KNX / instabus EIB line and backbone coupler, catalogue designation N 140/02. It sits between two KNX twisted-pair bus lines and passes telegrams of up to 64 bytes between them under the control of a loadable filter table. The same hardware covers three roles set in the application program: line coupler joining a line to a main line, area (backbone) coupler joining a main line to an area line, and line amplifier or repeater extending a single line. The two bus lines are galvanically isolated from one another.

Decoding the designation:

5WG1 — Siemens GAMMA instabus / KNX range.

140 — coupler family.

1AB — N-system DIN rail distribution-board housing.

02 — hardware generation. The current production part in the same family is the N 140/13, order number 5WG1140-1AB13.

Specifications:

Communication Standard: KNX / instabus EIB TP1 on both ports; telegram length up to 64 bytes. Nominal Rated Input Voltage: 24 V DC, drawn from the higher-ranking KNX bus line. Mounting Type: 35 mm DIN rail, N-system distribution board device. Connector Style: two separate KNX bus connector terminal blocks, one per line. Protection Degree: IP20. Material: Plastic housing. Controller Platform: Siemens GAMMA instabus / KNX. Unit Quantity: 1.

Dimensions and mounting:

N-system device for a 35 mm DIN rail inside a distribution board. Both bus lines land on separate bus connector terminals. The physical address, application program and filter table are downloaded from the commissioning tool through the learning button. Three front LEDs show operating state and traffic on each side. Operating power for the coupler electronics comes from the higher-ranking line; the subordinate line has its own bus power supply.

Compatibility and replacement:

The N 140/13 is the current-generation replacement in the same family and covers the same three roles. The data-rail version 5WG1140-1AB03 has the same function in a different mechanical mounting. The N 141 series is a DALI gateway, and IP routers such as the N 146 couple KNX to Ethernet.

Frequently asked questions:

What does the Siemens 5WG1140-1AB02 do?

It couples two KNX bus lines, filtering group telegrams so each line carries only the traffic it needs.

Can it be used as a repeater?

Yes, the same hardware works as a line coupler, area coupler or line amplifier, set in the application program.

What replaces the N 140/02?

The N 140/13, order number 5WG1140-1AB13.