Industrial Drive Power Solution – Siemens A5E42881257 | SINAMICS Power Unit
Where This Product Is Used
The Siemens A5E42881257 Power Unit is a core component in high-demand industrial automation environments. Engineers and system integrators specify this module across the following applications:
- CNC Machine Tools – Provides stable DC bus power for multi-axis SINAMICS S120 drive systems in precision machining centers and turning lathes.
- Industrial Robotics – Powers servo drive booksize units in robotic arms and gantry systems requiring fast dynamic response.
- Conveyor & Material Handling – Supplies regulated power to distributed drive topologies in logistics sorting lines and automated warehouses.
- Packaging Machinery – Supports synchronous multi-axis motion in high-speed filling, sealing, and labeling equipment.
- Printing & Paper Processing – Delivers clean power to tension-controlled web drives requiring minimal ripple and fast load response.
- Plastics & Extrusion – Integrated into extruder drive cabinets for continuous-duty high-torque applications.
Technical Specifications
- Part Number: A5E42881257
- Manufacturer: Siemens AG
- Product Family: SINAMICS Drive System – Power Unit
- Module Type: Power Unit / Infeed Module
- Compatibility: SINAMICS S120 Booksize / Chassis drive systems
- Cooling Method: Forced air (internal fan)
- Mounting: DIN rail / panel mount (booksize format)
- Protection Class: IP20
- Operating Temperature: 0 °C to +55 °C
- Storage Temperature: -40 °C to +70 °C
- Weight: Approx. 80 g (module only)
- Country of Origin: Germany
Note: Full electrical ratings (input voltage, output current, power rating) are confirmed upon order. Contact our technical team for datasheet access.
Why Engineers Specify This Model
- OEM-Grade Reliability – Manufactured to Siemens’ stringent quality standards for 24/7 industrial duty cycles.
- Seamless SINAMICS Integration – Plug-and-play compatibility with SINAMICS S120 drive topology; no additional interface modules required.
- Compact Booksize Form Factor – Optimizes cabinet space in multi-axis configurations without sacrificing power density.
- Fast Commissioning – Fully supported by STARTER and TIA Portal V16+ for rapid parameterization and diagnostics.
- Long Service Life – Designed for extended MTBF in continuous industrial operation with minimal maintenance requirements.
Complete System Bill of Materials
For a complete SINAMICS S120 drive system using the A5E42881257 Power Unit, engineers typically specify:
- SINAMICS S120 Active Line Module (ALM) or Smart Line Module (SLM)
- SINAMICS S120 Motor Module (booksize) – per axis
- DRIVE-CLiQ Hub Module (DMC20 / DME20) for topology expansion
- Siemens SINUMERIK 840D sl / 828D CNC controller (for machine tool applications)
- Siemens 1FK7 / 1FT7 Synchronous Servomotor
- Siemens DRIVE-CLiQ cable set (pre-assembled)
- 24 VDC SITOP PSU power supply for control electronics
- Siemens SIRIUS 3RV circuit breaker for upstream protection
Contact [email protected] for a complete BOM quotation tailored to your application.
Compliance & Industry Standards
- CE Marking – Compliant with EU Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU
- UL Listed – Recognized under UL 508C (Power Conversion Equipment)
- RoHS Compliant – Directive 2011/65/EU (restriction of hazardous substances)
- IEC 61800-5-1 – Safety requirements for adjustable speed electrical power drive systems
- EN 55011 / CISPR 11 – EMC emissions standard for industrial equipment
Quality Assurance & Sourcing
Every Siemens A5E42881257 unit shipped from Konmask.com undergoes the following verification process:
- ✅ OEM Traceability Check – Serial number and date code verified against Siemens production records where applicable.
- ✅ Visual & Mechanical Inspection – Connector integrity, PCB condition, and housing checked before dispatch.
- ✅ Anti-Static Packaging – Shipped in ESD-safe bags with foam cushioning to prevent transit damage.
- ✅ Authorized Distribution Network – Sourced through verified Siemens channel partners and authorized surplus distributors.
How to Source This Part
- Request a Quote – Email [email protected] with your required quantity and delivery timeline.
- Technical Consultation – Our engineers confirm compatibility with your existing SINAMICS drive topology at no charge.
- Order & Lead Time – In-stock units ship within 3–5 business days. Ex-stock orders confirmed within 24 hours.
- Global Shipping – DHL / FedEx express delivery available worldwide. Export documentation provided for cross-border shipments.
- After-Sales Support – 12-month warranty on all units. Replacement or refund policy applies to verified defective items.
Application-Specific FAQ
Q: Is the A5E42881257 compatible with SINAMICS S120 booksize drive systems?
A: Yes. This power unit is designed for integration within the SINAMICS S120 booksize drive family. Confirm your firmware version with our technical team before installation.
Q: Can this module be used as a direct replacement for a failed unit in an existing cabinet?
A: In most cases, yes — provided the hardware revision matches. We recommend sharing your existing unit’s nameplate data for cross-reference confirmation.
Q: Do you supply the DRIVE-CLiQ cables and mounting hardware separately?
A: Yes. Konmask.com stocks a full range of SINAMICS accessories. Contact us for a complete accessory kit quote.
Q: What is the lead time for bulk orders (>10 units)?
A: Bulk orders are handled on a project basis. Typical lead time is 7–15 business days depending on stock availability. Contact us for volume pricing.
Q: Is this product covered under Siemens’ standard warranty?
A: New OEM units carry Siemens’ standard warranty. Konmask.com additionally provides a 12-month seller warranty on all units regardless of source condition.
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