Siemens A5E42740246 Power Unit | Replacement, Equivalent & Selection Guide
The Siemens A5E42740246 is a Power Unit module designed for the SINAMICS S120 drive system. It provides regulated DC power to connected drive components and is engineered for demanding industrial automation environments. This page serves as a comprehensive selection, replacement, and compatibility reference for engineers and procurement teams sourcing this module.
Technical Specifications
- Part Number: A5E42740246
- Manufacturer: Siemens AG
- Series: SINAMICS S120
- Module Type: Power Unit
- Function: DC power supply / power conditioning for SINAMICS S120 drive components
- Mounting: DIN rail / panel mount (per S120 booksize/chassis format)
- Communication: DRIVE-CLiQ interface (S120 system bus)
- Cooling: Internal fan / forced air (format dependent)
- Protection Class: IP20 (standard booksize)
- Operating Temperature: 0 °C to +55 °C
- Standards: CE, UL, cUL, RoHS compliant
- Weight: Approx. 80 g (module only)
Note: For full electrical ratings (input voltage, output current, power rating), please refer to the official Siemens SINAMICS S120 documentation or contact Konmask for a datasheet.
Compatible Replacement & Equivalent Models
When the A5E42740246 is unavailable or discontinued, the following Siemens and third-party equivalents may be considered. Always verify electrical and mechanical compatibility before substitution.
- Siemens A5E42740247 – Revised hardware revision of the same power unit family; check firmware compatibility
- Siemens A5E31009462 – Alternative S120 power supply module; verify rated current matches your load
- Siemens 6SL3100-series Smart Line Modules – For applications requiring regenerative capability
- Siemens 6SL3130-series Active Line Modules – Higher-performance replacement for demanding duty cycles
- OEM-compatible power units – Available upon request; tested against Siemens S120 DRIVE-CLiQ protocol
Important: Replacement modules must match the original’s DRIVE-CLiQ firmware version and rated power class. Contact support@konmask.com for cross-reference assistance.
Why Choose the Original Siemens A5E42740246
- ✅ OEM Guaranteed Compatibility – Plug-and-play with existing SINAMICS S120 configurations; no firmware re-parameterization required
- ✅ DRIVE-CLiQ Auto-Recognition – Module is automatically identified by the Control Unit (CU320-2, CU310-2, etc.)
- ✅ Proven Reliability – Siemens industrial-grade components rated for 24/7 continuous operation
- ✅ Full Siemens Warranty & Support – Eligible for Siemens service contracts and spare parts programs
- ✅ Traceable Supply Chain – Konmask sources only from authorized distributors and verified industrial surplus channels
Typical Applications
- CNC machine tool spindle and axis drives
- Industrial robot joint drive systems
- Conveyor and material handling automation
- Printing and packaging machinery
- Textile and winding machine drives
- Pump and compressor variable-speed control
- Crane and hoist drive systems
System Compatibility
The A5E42740246 Power Unit is designed for integration within the Siemens SINAMICS S120 modular drive system. Confirmed compatible components include:
- Control Units: CU320-2 DP, CU320-2 PN, CU310-2 DP, CU310-2 PN
- Line Modules: Basic Line Module (BLM), Smart Line Module (SLM), Active Line Module (ALM)
- Motor Modules: Single-axis and double-axis booksize Motor Modules
- Engineering Software: STARTER, SINAMICS Startdrive (TIA Portal V14+)
- Communication: PROFIBUS DP, PROFINET IO (via Control Unit)
Selection Guide
Use the following criteria to confirm the A5E42740246 is the correct module for your application:
- Step 1 – Identify your drive topology: Confirm you are using a SINAMICS S120 booksize or chassis system
- Step 2 – Match power rating: Verify the module’s rated output current and voltage match your motor module requirements
- Step 3 – Check firmware version: Ensure your Control Unit firmware is compatible (refer to Siemens Compatibility Tool)
- Step 4 – Verify form factor: Confirm physical dimensions and mounting interface match your cabinet layout
- Step 5 – Confirm DRIVE-CLiQ port count: Ensure sufficient DRIVE-CLiQ connections for your topology
Not sure which module fits your system? Send your existing drive configuration or nameplate data to support@konmask.com and our engineers will advise.
Quality Assurance & Sourcing
- Source: Authorized distributors, factory-sealed stock, and verified industrial surplus
- Inspection: Every unit undergoes visual inspection and functional verification before shipment
- Authenticity: Anti-counterfeit checks performed on all Siemens-branded modules
- Packaging: ESD-safe packaging with original or equivalent protective materials
- Documentation: Certificate of conformity and test report available upon request
- Warranty: 12-month warranty against manufacturing defects (new units); 90-day warranty (refurbished/surplus)
How to Order
- Click Add to Cart or Buy Now on this page
- For bulk orders (>5 units) or urgent requirements, email support@konmask.com for a dedicated quote
- Provide your shipping address and preferred freight method at checkout
- Lead time: In-stock units ship within 1–3 business days; special-order units 5–15 business days
- Payment: T/T (bank transfer), PayPal, credit card, and trade assurance accepted
📞 Phone/WhatsApp: +0086 19859288691
📧 Email: support@konmask.com
🌐 Website: https://konmask.com
Replacement & Compatibility FAQ
Q: Can I use A5E42740246 to replace a different A5E-series power unit?
A: Only if the rated power class, DRIVE-CLiQ interface version, and physical form factor match. Contact us for a cross-reference check.
Q: Is this module compatible with SINAMICS S110 or S150?
A: No. The A5E42740246 is designed for the SINAMICS S120 platform. S110 and S150 use different power unit architectures.
Q: Do you supply refurbished units?
A: Yes. Refurbished units are clearly labeled, tested, and carry a 90-day warranty. New units carry a 12-month warranty.
Q: Can you provide a datasheet or wiring diagram?
A: Yes. Email support@konmask.com with your part number and we will send the relevant Siemens documentation.
Q: What is the lead time for out-of-stock units?
A: Typically 5–15 business days depending on sourcing channel. Expedited sourcing available for urgent requirements.
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Contact: support@konmask.com | +0086 19859288691
