Power Connector 6FX2003-OLU00 6FX2 003-OLU00 6FX2OO3-OLUOO

Siemens 6FX2003-0LU00 | MOTION-CONNECT Power Connector — Size 1, 6-Pole Socket with Screw Cap

Part Number: 6FX2003-0LU00

Cross Reference: 6FX20030LU00

Manufacturer: Siemens AG (Germany)

Product Type: Power Connector — Socket Insert for Servo Drive Motor Cable

Product Series: MOTION-CONNECT 

Connecting Drives to Motors

The 6FX2003-0LU00 is the Size 1, 6-pole power connector socket from Siemens' MOTION-CONNECT range — the mating connector used to terminate the power cable that runs between a servo drive amplifier and an AC servo motor. It is a field-termination component: the engineer assembles this connector onto the cut motor cable end, creating the plug that inserts into the motor's power input socket.

The kit contents give a complete termination solution in one part: the 6-pole insulator housing, eight socket contacts rated for 1–2.5 mm² conductors, and two cable strain relief clamps covering the outer diameter ranges 7.5–12 mm and 9–15 mm. The screw cap locks onto the insulator after wiring, sealing the assembly and providing the strain relief clamping force.

In Siemens' SINUMERIK and SINAMICS drive systems, the MOTION-CONNECT power cable system uses standardised connectors to allow modular cable assembly. The connector size — Size 1 — is matched to the current rating of the cable and motor power class. Size 1 covers the lower-to-mid power range; higher-power motors use Size 2 or Size 3 connectors.

Key Specifications

FAQ

Q1: How many conductors does a 6-pole motor power connector carry?

The 6-pole connector carries the three motor phase conductors (U, V, W), the protective earth conductor (PE), and the two brake conductors (if the motor has an electromagnetic brake). The eight socket contacts accommodate these connections, with unused positions on braked or unbraked motor variants left open.

Q2: The cable termination range covers 7.5–12 mm and 9–15 mm outer diameters. Which applies to which cable?

The two cable termination entries are for two different cable outer diameter ranges in the same connector assembly — one clamp accommodates the motor cable (typically the power cable's overall outer jacket, which varies by cable type), and the other accommodates a different cable variant. Select the clamp that matches the outer diameter of the cable being terminated.

Q3: Can the 6FX2003-0LU00 be assembled without special tools?

Yes. The screw-type contacts require only a standard slotted or Phillips screwdriver and a wire stripper. The cable outer clamp uses a standard screw fastener. No crimping tools are needed. Siemens' MOTION-CONNECT assembly instructions specify conductor strip length and screw torques for correct termination.

Q4: What Siemens servo motor series are compatible with the Size 1 connector?

The Size 1 connector is used with SINUMERIK and SINAMICS-compatible servo motors in the lower-to-mid power class. Motor series typically using Size 1 include 1FK7, 1FT7, and related series in the power range served by 1–2.5 mm² conductors. Confirm the connector size from the motor's terminal designation or MOTION-CONNECT cable ordering documentation for the specific motor model.

Q5: Is the 6FX2003-0LU00 connector reusable if the cable is re-terminated?

The socket contacts are screw-termination type, allowing the cable to be removed and re-inserted. However, SIEMENS recommends replacing the contacts if the conductor has been over-torqued or the insulation is damaged at the strip point. The insulator housing is reusable provided it is undamaged. For critical drive connections, replacing the entire connector kit on re-termination is the safest practice.