12 Pin PLC Programmable Logic Controller Signal Connector 6FX2003-OSA12

Siemens 6FX2003-0SA12 Signal Connector

Overview

The 6FX2003-0SA12 is a 12-pole signal connector in the male thread pin version. Siemens product data identifies it with 1 × 12-pole insulator, 12 pin contacts for 0.08–0.22 mm² conductors, 12 pin contacts for 0.20–0.56 mm² conductors, and 2 cable terminals for 6.5 to 10 mm and 10.1 to 13 mm cable diameters, packed as 1 unit.

Siemens support and datasheet listings also present it as a signal-connector accessory rather than as an active electronics module.

This connector is used where the installed cable system requires the male-thread pin version of the 12-pole signal interface.

In cable replacement and machine service work, that mechanical distinction matters just as much as the pole count, because the mating side and cable assembly structure depend on the exact connector type. Keeping the same connector style helps preserve the original signal-side connection format.

Technical Data

Application Value

This connector fits signal-cable termination, sensor or encoder cable assembly, motion/control harness replacement, and Siemens connector-system maintenance where the original interface requires the male thread pin version.

Because it includes the correct insulator, pin contacts, and cable terminals, it supports full connector-end assembly with matched mechanical parts.

Where the installed machine already uses this connector family, replacing it with the same model helps preserve the original mating structure and cable-end layout.

That is important in systems where the connector itself is part of a defined signal-cable standard rather than just a generic field plug.

Selection Notes

The main checks are the 12-pole requirement, the male thread pin connector style, the supported wire cross-sections, and the cable outside-diameter ranges.

Those details determine whether the connector will fit the cable correctly and mate with the intended counterpart in the system.

FAQ

Q1: What is 6FX2003-0SA12?
It is a 12-pole Siemens signal connector in the male thread pin version. Siemens product data lists the insulator, two pin-contact size groups, and cable-terminal parts in the package, so it is intended for complete signal-connector assembly or replacement.

Q2: How is this different from a socket-style connector?
This model is the male thread pin version, not the socket version. That difference affects the mating side of the connector and must match the original connection arrangement of the cable and its counterpart. The distinction is part of the core product identity.

Q3: Why are the pin-contact size ranges important?
The included pin contacts are specified for 0.08–0.22 mm² and 0.20–0.56 mm² conductors. Matching the contact size to the wire size is necessary for correct termination and secure signal connection.

That is one of the key checks during connector rebuild or cable replacement.

Q4: Why do the cable terminal ranges matter for this connector?
They define which cable outside diameters can be clamped correctly inside the connector assembly.

Siemens lists 6.5 to 10 mm and 10.1 to 13 mm, which helps ensure proper cable support and mechanical stability after termination.

Q5: What should be checked before ordering?
Check the installed connector code, confirm that the system requires the 12-pole male thread pin version, verify the conductor size, and make sure the cable diameter fits one of the listed terminal ranges.

Those points determine whether the connector matches the existing cable assembly.