Siemens 3VU1640-1MJ00 Motor Protection Circuit Breaker – Obsolete SIRIUS Spare Part

Technical Dossier

Product Details And Specifications

Siemens 3VU1640-1MJ00 Motor Protection Circuit Breaker – Obsolete SIRIUS Spare Part

RFQ support for obsolete parts: Send the model number, required quantity and destination so DriveKNMS can confirm sourcing options before quotation.

Technical Specifications

Note: Electrical parameters such as current rating and breaking capacity are not listed here to prevent specification errors. Please contact us with your application requirements for confirmation before ordering.

Solving the Discontinued Hardware Crisis

The Siemens 3VU series motor protection circuit breakers were widely deployed across industrial motor control centers throughout the 1990s and 2000s. These components are embedded in automation infrastructure that continues to operate in chemical processing plants, water treatment facilities, automotive assembly lines, and discrete manufacturing environments worldwide. When Siemens discontinued the 3VU line in favor of the 3RV series, it left a significant installed base without a direct OEM replacement path.

The 3VU1640-1MJ00 is not a commodity item that can be substituted without engineering review. Its mounting footprint, terminal configuration, and trip characteristic curves are specific to the 3VU platform. Replacing it with a non-equivalent part requires panel re-wiring, updated documentation, and in regulated industries, re-certification of the modified assembly. For a plant running 24/7 operations, that process can take weeks and cost far more than the value of the original component.

Condition & Reliability Assurance

Sourcing obsolete industrial components from secondary markets carries real risk. DriveKNMS applies a structured 5-step quality process to every unit before it is offered for sale:

• Step 1 – Visual and Mechanical Inspection: Each unit is examined for housing cracks, terminal damage, and label integrity. Units showing signs of field abuse or improper storage are rejected at intake.
• Step 2 – Electrolytic Capacitor Assessment: Where applicable, internal capacitor condition is evaluated. Aged or bulging capacitors are a primary failure mode in stored electronic components and are flagged for rejection.
• Step 3 – Contact and Pin Corrosion Check: All electrical contacts and connection pins are inspected under magnification. Oxidation or corrosion that would affect contact resistance is documented and units are either treated or rejected.
• Step 4 – Functional Verification: Units are tested for basic operational function where test equipment permits. Trip mechanism actuation and reset function are verified.
• Step 5 – Firmware and Marking Verification: Part markings, date codes, and any embedded firmware identifiers are cross-referenced against known authentic Siemens production records to screen for counterfeit units.

Key Features for System Maintenance

Q: Can this part be used as a direct replacement without an engineer reviewing the application?
A: The 3VU1640-1MJ00 should be replaced with an identical part number to ensure trip characteristic compatibility. If you are uncertain whether your application matches this specific variant, contact us with your existing unit's nameplate data and we will confirm compatibility before dispatch review.