SIEMENS 6SL3352-7DX00-0AA0 (RT78726) DC Busbar | Replacement, Equivalent & Selection Guide
The SIEMENS 6SL3352-7DX00-0AA0 (also referenced as RT78726) is a DC Busbar designed for use within the SINAMICS S120 drive system. It serves as a critical power distribution component connecting DC link sections across chassis-format drive modules. Konmask.com supplies this part with full traceability, supporting B2B industrial buyers who require verified, spec-accurate components.
Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | SIEMENS |
| Part Number | 6SL3352-7DX00-0AA0 |
| Reference / Alias | RT78726 |
| Component Type | DC Busbar |
| Product Series | SINAMICS S120 |
| Form Factor | Chassis / Booksize compatible |
| Weight | 5,000 g (approx.) |
| Country of Origin | Germany |
| Condition | New / Surplus New |
Compatible Replacement & Equivalent Models
When the original 6SL3352-7DX00-0AA0 is unavailable or discontinued, the following alternatives may be evaluated depending on your drive configuration:
- SIEMENS 6SL3352-6BE00-0AA0 — DC busbar variant for booksize modules (verify frame size compatibility)
- SIEMENS 6SL3352-7AX00-0AA0 — Alternative busbar for S120 chassis units (confirm DC link voltage rating)
- Third-party OEM-equivalent busbars rated for SINAMICS S120 DC link sections
Note: Always verify mechanical dimensions, current rating, and DC link voltage before substituting. Contact support@konmask.com for cross-reference assistance.
Why Choose the Original Model
- Factory-engineered for precise fit within SINAMICS S120 chassis drive assemblies
- Ensures full compliance with SIEMENS drive system safety and EMC standards
- Eliminates integration risk associated with third-party substitutes
- Backed by SIEMENS global service and spare parts documentation
- Reduces commissioning time — plug-and-play replacement with no re-engineering
Typical Applications
- CNC machine tool spindle and axis drives
- Industrial conveyor and material handling systems
- Pump and fan variable-speed drive installations
- Crane and hoist drive systems
- Printing press and paper machine drive lines
- Automotive assembly line servo drive infrastructure
System Compatibility
- SINAMICS S120 Chassis Format — primary target platform
- Compatible with SIEMENS Active Line Modules (ALM) and Motor Modules in chassis design
- Integrates with SINAMICS S120 DC link capacitor modules and braking modules
- Works within SINAMICS S120 booksize power sections where busbar geometry matches
Selection Guide
Use the following criteria to confirm 6SL3352-7DX00-0AA0 is the correct part for your application:
- Drive Series: Confirm your drive is SINAMICS S120 (not S150, G120, or G130)
- Format: Chassis-format modules — verify frame size (FSD, FSE, FSF, etc.)
- DC Link Voltage: Match rated DC link voltage of your line module
- Current Rating: Confirm busbar current capacity meets your system’s peak demand
- Mounting Position: Verify busbar orientation (horizontal / vertical) matches cabinet layout
If you are unsure, share your drive order number or nameplate data with our team for a free selection check.
Quality Assurance & Sourcing
- All units sourced from authorized distributors or verified surplus channels
- Pre-shipment inspection: visual, dimensional, and label verification
- Serialized traceability records available on request
- Packaging: original SIEMENS packaging where available; ESD-safe alternative packaging otherwise
- Export compliance: ECCN classification and export documentation provided for international orders
How to Order
- Add 6SL3352-7DX00-0AA0 to cart and proceed to checkout, or
- Email support@konmask.com with your quantity, delivery location, and required lead time
- For bulk / project orders, request a formal quotation — we support NET payment terms for qualified accounts
- International orders: we handle customs documentation, HS code declaration, and freight forwarding coordination
Replacement & Compatibility FAQ
Q: Can I use a third-party DC busbar instead of the original SIEMENS part?
A: Mechanically possible in some cases, but not recommended without engineering review. Dimensional tolerances and current ratings must match exactly to avoid drive faults or thermal issues.
Q: Is 6SL3352-7DX00-0AA0 still in production?
A: Contact us to confirm current production status. We maintain surplus stock and can advise on lifecycle and replacement options.
Q: What is the RT78726 reference number?
A: RT78726 is an internal or regional catalog alias for 6SL3352-7DX00-0AA0. Both numbers refer to the same component.
Q: Do you ship internationally?
A: Yes. Konmask.com ships globally with full export documentation. Lead times and freight options vary by destination.
Q: Can you provide a certificate of conformity or test report?
A: Yes, upon request for qualified orders. Contact our team before placing your order.
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Contact: support@konmask.com | +0086 19859288691
