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⚙️ Main technical features

Supply voltage: 230 V / 400 V AC
Rated power: from 0.12 kW to 250 kW
Output frequency: 0–650 Hz
Control modes: vector control or linear V/f
Communication: Modbus, USS, PROFIBUS (on higher versions)
Integrated functions: soft start, dynamic braking, motor thermal protection, self-diagnostics

Thanks to their modularity, MICROMASTER inverters can be quickly installed in electrical panels, automation lines, pumps, fans, and conveyor systems, making them a universal solution for many industrial applications.

🏭 Main Siemens MICROMASTER series

🔹 MICROMASTER 420 – multifunction inverter for standard applications; offers reliable performance and easy parameterization.
🔹 MICROMASTER 430 – designed for pumps and fans, includes energy-saving functions and integrated PID control.
🔹 MICROMASTER 440 – high-performance version featuring vector control, dynamic braking, and a wide range of digital I/O.
🔹 MICROMASTER 411 / 410 / 440-E – compact variants for OEM installations or retrofits of existing systems.

Although now replaced by the SINAMICS G-Series, these families remain widely used and still essential in thousands of production plants across Europe.

🔧 E-Repair services for Siemens MICROMASTER

E-Repair, Siemens Approved Partner – Industry Services, specializes in maintenance, regeneration, and testing of MICROMASTER inverters, ensuring production continuity even for models no longer in production.

Available services:

🧩 Certified repair with original Siemens spare parts
🔁 Electronic regeneration restored to “zero hours”
⚡ Advance shipment of regenerated or new inverters to reduce downtime
🧠 Machine parameter backup and customized tuning
🌐 On-site / remote support (MAAS – Maintenance as a Service)
🧽 Technological washing and functional testing on dedicated test benches
🔒 Warranty up to 24 months

Every intervention is carried out in E-Repair’s Siemens-certified technical laboratory, in accordance with BS 8001:2017, AFNOR XP X30-901:2018, ISO 14064-1 and ISO 27001 standards, aligned with ESG principles and circular-economy practices.

👉 Discover E-Repair services for MICROMASTER

💬 FAQ – Siemens MICROMASTER

1️⃣ Are MICROMASTER inverters still repairable?
Yes. E-Repair can service all versions, using tested components and original Siemens procedures.

2️⃣ Is it possible to receive a regenerated inverter in advance?
Yes. E-Repair’s warehouse includes regenerated, tested, and ready-to-ship MICROMASTER units.

3️⃣ Are the inverters tested before delivery?
Always. Each inverter is tested on original Siemens test benches to verify efficiency and safety.

🔗 Learn more about the Siemens MICROMASTER range

Explore the E-Repair catalog to view all available versions:
👉 https://www.e-repair.com/products-catalogue/micromaster

🟢 Article based on content published on E-Repair’s official social channels.