Original Siemens Power Supply Board 6SL3352-6BE00-0AA0 6SL33526BE000AA0 6SL3352-6BEOO-OAAO 6SL3 352-6BE00-0AA0

Siemens 6SL3352-6BE00-0AA0 | SINAMICS/MICROMASTER PX Replacement Power Supply — 380–480V 3AC Internal Drive Control Supply

Part Number: 6SL3352-6BE00-0AA0

Manufacturer: Siemens AG (Austria)

Overview

The 6SL3352-6BE00-0AA0 is the original production revision of the SINAMICS/MICROMASTER PX internal replacement power supply. It shares the same function and application as the later 6SL3352-6BE00-0AA1 — both serve as the cross-platform internal switching power supply for SINAMICS and MICROMASTER drive modules at 380–480V 3AC input — but this 0AA0 revision represents the initial design generation.

The 0AA0 to 0AA1 revision step within the same base part number reflects Siemens' standard production engineering change process: incremental component updates, layout refinements, or reliability improvements implemented while maintaining full functional and application compatibility. Both revisions perform the same role — converting the 380–480V AC supply to the regulated DC rails that power the drive's control electronics, gate drivers, and communication interfaces.

This board is the power source for the entire drive control section. When it fails, the drive becomes completely unresponsive: no display, no fault codes, no communication. Identifying a failed PX power supply is straightforward — the symptom is total silence from the drive with confirmed AC supply present.

Key Specifications

0AA0 vs 0AA1 — Revision Relationship

Within the 6SL3352-6BE00-0AA series, the final three alphanumeric digits identify the revision. 0AA0 is the first revision; 0AA1 is the next. Both serve the same application with the same function and the same 380–480V 3AC input specification.

For most practical maintenance purposes — sourcing a replacement power supply for a SINAMICS or MICROMASTER drive in this application — the two revisions are functionally equivalent. The 0AA1 revision is the more commonly available of the two in the aftermarket, as it was produced after the 0AA0 and therefore has a larger installed base from which exchange units are drawn.

When sourcing, if a 0AA0 is specifically required and a 0AA1 is offered as an alternative, confirm with the supplier that the application compatibility has been verified before accepting the substitution.

Drive Symptom: Total Unresponsiveness

The failure presentation of a dead PX power supply is distinctive: the drive shows no display activity, no LED illumination, and no response on any communication interface — PROFIBUS, PROFINET, or local operator panel. This happens because the control section has lost all power. The drive's protective circuits and fault detection systems require the PX supply to operate; without it, even fault logging is impossible.

Before concluding that the 6SL3352-6BE00-0AA0 has failed, confirm that the AC supply is present at the drive's input terminals, that any internal or external AC fuses are intact, and that the 24V external control supply (if present) is within specification. If all external supplies check out and the drive remains completely silent, the PX power supply is the fault.

FAQ

Q1: The drive is completely dead with confirmed AC supply. Can the PX power supply be tested in-circuit before removing it?

In-circuit testing of the PX power supply requires measuring the secondary DC output voltages at the board's output connectors — typically 24V, 15V, and 5V rails. If any secondary rail is absent or significantly out of specification, the supply has failed. Secondary rail voltages can usually be measured at accessible test points in the drive's control section even with the drive non-operational, using a calibrated multimeter and the drive's circuit diagram.

Q2: A 6SL3352-6BE00-0AA1 is available as a substitute. Can it replace the 0AA0 directly?

The 0AA1 is the production successor to the 0AA0 and serves the same drive applications with the same input and output specification. In most cases, a 0AA1 installs directly in place of a 0AA0 with no other changes required. The drive does not distinguish between the two revisions electrically — both supply the same DC output rails. Confirm the physical connector and mounting dimensions are identical before installing if there is any uncertainty.

Q3: The PX power supply is obsolete. What is the best sourcing strategy?

Specialist industrial drive repair companies hold tested exchange stock for both the 0AA0 and 0AA1 revisions. Some also offer board-level repair of failed units — viable when the failure is localised to a component such as a failed primary-side switching transistor or a degraded output capacitor. An exchange programme — returning the faulty board for credit toward a tested replacement — is cost-effective and commonly available for this part.

Q4: After replacing the 6SL3352-6BE00-0AA0, should any parameters be re-entered or re-configured?

No. The PX power supply stores no drive parameters. All configuration data resides on the drive's Control Unit or its associated memory card. After installation, the drive powers up normally and reads its parameters without requiring any re-entry or re-commissioning steps.

Q5: The drive worked normally until a brief mains voltage surge, after which it became completely unresponsive. Is the 6SL3352-6BE00-0AA0 the only component likely to have failed?

Mains voltage surges can damage multiple components simultaneously. Besides the PX power supply, check: the AC input fuses, any MOV (metal oxide varistor) surge protection devices at the drive's input terminals, and the drive's DC bus pre-charge circuit. If the surge was severe, the Control Unit may also have sustained damage. Replace the PX supply first, then power up and observe whether the drive initialises normally. If fault codes appear after the supply is restored, further investigation of the control electronics is required.