SIEMENS 6SL3351-1AE37-5BA1 Power Block | Replacement, Equivalent & Selection Guide
The SIEMENS 6SL3351-1AE37-5BA1 is a high-performance Power Block module from the SINAMICS S120 series, designed for demanding servo and vector drive applications. This page provides full technical specifications, compatible replacement models, and a structured selection guide to help engineers and procurement teams make confident sourcing decisions.
Technical Specifications
| Part Number / SKU | 6SL3351-1AE37-5BA1 |
| Manufacturer | SIEMENS |
| Series | SINAMICS S120 |
| Module Type | Power Block |
| Rated Current | 75 A |
| Voltage Class | 380–480 V AC (3-phase) |
| Cooling Method | Internal air cooling |
| Protection Rating | IP20 |
| Communication Interface | DRIVE-CLiQ |
| Weight | approx. 300 g |
| Country of Origin | Germany / EU |
Compatible Replacement & Equivalent Models
The following models are functionally compatible or serve as direct/near-direct replacements for the 6SL3351-1AE37-5BA1. Always verify electrical ratings and firmware compatibility before substitution.
| Part Number | Brand | Type | Compatibility Notes |
|---|---|---|---|
| 6SL3351-1AE36-0BA1 | SIEMENS | Power Block | Lower current rating (60 A); verify load requirements |
| 6SL3351-1AE38-4BA1 | SIEMENS | Power Block | Higher current rating (84 A); drop-in for upgraded capacity |
| 6SL3351-1AE37-5AA1 | SIEMENS | Power Block | Earlier revision; functionally equivalent, check firmware |
| 6SL3351-1AE37-5BA0 | SIEMENS | Power Block | Previous hardware revision of same rating |
Note: Third-party equivalents may exist. Contact [email protected] for cross-reference assistance.
Why Choose the Original Model
- Guaranteed Compatibility: Factory-matched to SINAMICS S120 Motor Modules and Control Units via DRIVE-CLiQ.
- Firmware Integrity: Original hardware revision ensures seamless firmware updates without compatibility flags.
- Warranty & Traceability: Full SIEMENS traceability with serial number and production batch records.
- Reduced Commissioning Risk: No parameter re-mapping or hardware adaptation required.
- Long-Term Support: Covered under SIEMENS spare parts lifecycle program.
Typical Applications
- CNC machine tool spindle and axis drives
- Industrial robot joint servo control
- Printing and packaging line servo axes
- Textile and winding machine tension control
- Conveyor and material handling automation
- Injection molding machine hydraulic servo axes
System Compatibility
The 6SL3351-1AE37-5BA1 is designed to operate within the following SINAMICS S120 system configurations:
- Control Units: CU320-2 DP, CU320-2 PN, CU310-2 DP/PN
- Motor Modules: Single-axis and double-axis booksize Motor Modules (SINAMICS S120)
- Line Modules: Active Line Module (ALM), Smart Line Module (SLM), Basic Line Module (BLM)
- DRIVE-CLiQ Topology: Star or daisy-chain wiring supported
- SIMATIC Integration: Compatible with S7-300, S7-400, S7-1500 via PROFIBUS DP / PROFINET IO
Selection Guide
Use the following criteria to confirm the 6SL3351-1AE37-5BA1 is the correct module for your application:
- Current Rating: Confirm motor rated current ≤ 75 A continuous. For higher loads, consider 6SL3351-1AE38-4BA1.
- Voltage Supply: Verify DC bus voltage matches your Line Module output (typically 540–720 V DC for 400 V AC input).
- Cooling: Confirm cabinet airflow meets internal cooling requirements; no external heatsink needed.
- Hardware Revision: Match revision suffix (BA1) to existing system for firmware consistency.
- DRIVE-CLiQ Port Count: Verify available DRIVE-CLiQ ports on your Control Unit for topology planning.
- Certifications: CE, UL, cUL — confirm regional certification requirements before ordering.
Quality Assurance & Sourcing
- All units sourced from authorized distributors or verified surplus channels with full traceability.
- Pre-shipment inspection: visual, label verification, and functional power-on test where applicable.
- Anti-static packaging with humidity indicator card for safe international shipping.
- Certificate of Conformity (CoC) available upon request.
- Konmask.com maintains a strict no-counterfeit policy — all parts are subject to authenticity verification.
How to Order
- Add 6SL3351-1AE37-5BA1 to cart and proceed to checkout.
- For bulk orders (5+ units), contact [email protected] for volume pricing.
- Lead time: In-stock units ship within 1–3 business days; sourced units 5–15 business days.
- Export documentation (commercial invoice, packing list, CoC) provided for international orders.
- Payment: T/T, PayPal, credit card accepted. LC available for orders above USD 5,000.
Replacement & Compatibility FAQ
Q: Can I use 6SL3351-1AE37-5BA0 instead of 6SL3351-1AE37-5BA1?
A: The BA0 is a previous hardware revision. It is generally functionally equivalent but may require firmware downgrade. Verify with your SIEMENS service engineer before substitution.
Q: Is this module compatible with SINAMICS G120?
A: No. The 6SL3351 series is specific to SINAMICS S120 booksize architecture. G120 uses a different power module form factor (6SL3224 series).
Q: What is the difference between a Power Block and a Motor Module?
A: In S120 booksize, the Power Block is the power electronics section that pairs with a Control Interface Module (CIM) to form a complete Motor Module. They are sold and replaced separately.
Q: Do you provide a warranty?
A: Yes. Konmask.com offers a 12-month warranty on all stocked units. Warranty terms are detailed in our Return & Warranty Policy.
Q: Can Konmask.com help identify the correct replacement if my part number is damaged?
A: Yes. Send us the drive nameplate photo or system configuration details to [email protected] and our engineers will assist.
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