Siemens MICROMASTER 440 VFD 30kW 200-240V 3-Phase 6SE6440-2UC33-0FA1

Siemens MICROMASTER 440 VFD 30kW – F-Size Vector Drive for High-Power Industrial Applications

The Siemens MICROMASTER 440, model 6SE6440-2UC33-0FA1, delivers 30kW constant torque output power with 200-240V 3-phase input, with square-law torque rating extending to 37kW for pump and fan applications[reference:87]. This F-size unfiltered drive represents the largest chassis in the 200V product line, capable of handling output currents up to 104A[reference:88] for demanding industrial applications.

The F-size chassis (850×350×320mm) is designed for the highest power levels in the MM440 200V series. At 30kW constant torque, output current reaches 104A, requiring substantial supply capacity and careful installation planning. The large enclosure provides enhanced thermal management for continuous operation at these power levels, with oversized heat sinks and forced-air cooling provisions.

Applications at this power level are typically mission-critical: large industrial fans in manufacturing plants where ventilation downtime affects production, primary pumps in water distribution systems where failure impacts public service, and heavy processing machinery where product quality depends on consistent motor performance. The drive's sensorless vector control maintains stable torque delivery despite load variations.

Key Specifications:
- Output Power: 30 kW (constant torque) / 40 HP
- Square-Law Torque Power: 37 kW (pumps, fans, centrifugal loads)[reference:89]
- Input Voltage: 200-240V AC 3-phase, +10/-10%, 47-63Hz[reference:90]
- Input Current: 96 A (constant torque)[reference:91]
- Rated Output Current: 104 A (constant torque)[reference:92]
- Output Frequency: 0-600 Hz[reference:93]
- Overload Capacity: 150% for 60 s, 200% for 3 s[reference:94]
- Protection Class: IP20
- Operating Temperature: -10°C to +50°C
- Dimensions (H×W×D): 850mm × 350mm × 320mm[reference:95]
- Weight: Approx. 50-60 kg
- Filter: Without built-in filter
- Frame Size: F

Typical Applications:
- Large industrial fans and blowers
- High-capacity centrifugal pumps
- Heavy-duty conveyors and material handling
- Large extruders and compounders
- Industrial mixers and agitators
- Compressors (large screw type)
- Centrifuges and decanters

Key Features:
- Sensorless vector control delivers 100% torque down to 0.5 Hz without encoder
- Built-in braking chopper for dynamic braking (external resistor required)
- BiCo technology for flexible I/O signal configuration
- 6 digital inputs, 2 analog inputs, 2 analog outputs, 3 relay outputs
- Integrated Modbus RTU interface
- Flying restart for capturing spinning motors
- DC injection braking for zero-speed holding
- PID controller for closed-loop process control
- Comprehensive protection functions for reliable operation

F-Size Chassis Characteristics:
The F-size chassis is the largest in the MM440 family, measuring 850×350×320mm. This form factor is designed for power levels where heat dissipation becomes a primary engineering consideration. The enclosure includes provisions for optional external cooling and larger terminal compartments for heavy-gauge power cables common at this current level.

Important Notes:
- This product is discontinued (PM410). Available ONLY as a spare part
- Requires 3-phase input only; 104A output at full load requires substantial supply capacity
- For new installations, SINAMICS G120 series is the recommended successor
- Heavy-gauge power cables required for 104A+ current
- Forced cooling may be required depending on installation conditions
- BOP or AOP required for parameter changes beyond factory defaults

FAQ:

Q1: What are the physical installation requirements for this F-size drive?
A: Dimensions 850×350×320mm (H×W×D). Allow 200mm clearance above and below for proper airflow due to high heat dissipation. Ensure mounting surface can support the drive's weight (50-60kg). Forced cabinet ventilation is typically required.

Q2: What is the input current requirement for this 30kW model?
A: Input current is 96A at full load constant torque. For square-law torque applications (37kW), input current will be proportionally higher. This requires appropriately sized supply conductors and protection devices per local electrical code.

Q3: Can this drive operate on single-phase power?
A: No. All F-size models require 3-phase input power only. At this power level, single-phase supply is not practical due to current requirements.

Q4: What is the typical efficiency at this power level?
A: MM440 drives at 30kW+ achieve typical efficiencies of 97-98%. This high efficiency translates to lower cooling requirements and reduced operating costs compared to less efficient drive technologies.

📦 Spare Part – Limited Stock | Tech Support | Please confirm availability before ordering
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