Siemens MICROMASTER 430 VFD 37kW 380-480V 3-Phase Pump Fan Drive 6SE6430-2UD33-7EB0

Siemens MICROMASTER 430 VFD 37kW – E-Size High-Power Drive for Large Pump and Fan Systems

The Siemens MICROMASTER 430, model 6SE6430-2UD33-7EB0, delivers 37kW output power with 380-480V 3-phase input. This unfiltered variable torque drive represents the highest power rating covered by this product listing and is built in the larger E-size chassis for enhanced thermal management and higher current capacity. Designed for large-scale industrial pump and fan applications, this drive combines robust construction with specialized pump/fan software functions.

Key Specifications:
- Output Power: 37 kW (variable torque / square-law torque)
- Input Voltage: 380-480V AC 3-phase, +10/-10%, 47-63Hz
- Input Current: 72A
- Rated Output Current: 75A
- Output Frequency: 0-650Hz
- Overload Capacity: 110% for 60s, 140% for 3s
- Protection Class: IP20
- Operating Temperature: -10°C to +50°C
- Dimensions (HxWxD): 650mm × 275mm × 245mm
- Weight: Approx. 24kg
- Filter: Without built-in filter
- Frame Size: E

Typical Applications:
- Large industrial process pumps
- High-capacity industrial fans
- HVAC central plant chillers and large air handlers
- Large cooling tower fan arrays
- Municipal water/wastewater pump stations
- Industrial ventilation systems
- Large air handling units for commercial buildings

Key Features:
- Built-in PID controller for closed-loop regulation
- Linear V/f control with Flux Current Control (FCC)
- 6 digital inputs, 2 analog inputs, 2 analog outputs, 3 relay outputs
- 15 fixed frequencies, 4 skip frequencies
- BiCo technology for flexible I/O configuration
- Integrated RS-485 Modbus RTU interface
- Optional PROFIBUS-DP module
- Flying restart for spinning motor capture
- DC injection braking and compound braking
- Integrated PTC/KTY84 input for motor thermal protection

Pump & Fan Special Features:
- Multi-pump switching (staging up to 3 additional pumps)
- Bypass logic with automatic transfer
- Manual/Auto mode with switchover
- Dry well detection / belt break detection
- Energy saving mode with consumption monitoring
- Sleep mode for idle operation
- Motor staging control via output relay

E-Size Chassis Information:
The E-size chassis (650×275×245mm) is designed for higher power applications in the 37kW-45kW range. The larger enclosure provides superior thermal dissipation for continuous heavy-duty operation. Proper clearance for air circulation is essential – allow 100mm above and below the drive for adequate cooling airflow.

Selection Guide:
The 37kW model is the entry point to the E-size chassis. Choose 37kW when your pump or fan motor is rated 37kW (50 HP) or when the 30kW D-size model is insufficient. For higher power requirements (up to 45kW), the next model in the MM430 series would be 6SE6430-2UD34-5EB0.

Important Notes:
- This product is discontinued. Available ONLY as a spare part
- EB0 suffix indicates E-size chassis with specific cooling configuration
- A BOP or AOP is required for parameter changes beyond factory defaults
- For new installations, Siemens recommends the SINAMICS G120 series as the successor
- Available while stocks last

FAQ:

Q1: What is the power range of the MM430 E-size chassis?
A: The E-size chassis covers 37kW-45kW power ratings. The 6SE6430-2UD33-7EB0 is the 37kW model. The higher 45kW model is 6SE6430-2UD34-5EB0 (same E-size chassis dimensions).

Q2: Does this drive include a built-in EMC filter?
A: No. This is the unfiltered version (EB0 suffix). For applications requiring EMC compliance, external filters are available as accessories. Filtered versions with built-in filters are also available (Class A or Class B) with different suffixes.

Q3: What is the recommended clearance for this E-size drive?
A: Allow 100mm clearance above and below the drive for proper air circulation. No side clearance is required for side-by-side mounting, but ensure adequate overall cabinet ventilation if multiple drives are installed.

Q4: Can this drive be used for constant torque applications?
A: While technically possible, MM430 is specifically optimized for variable torque loads (pumps, fans). For constant torque applications like conveyors, mixers, or compressors, the MICROMASTER 440 series would be more suitable.

Q5: How does the 37kW model compare to the 30kW model?
A: The 37kW model provides 25% higher output current (75A vs 62A) and uses the larger E-size chassis (650mm height vs 520mm height) for better thermal dissipation. It is the appropriate choice for 37kW (50 HP) motors where the 30kW model would be undersized.

Q6: Is this product still in production?
A: No. MICROMASTER 430 series has been discontinued. The 6SE6430-2UD33-7EB0 is available ONLY as a spare part for existing installations while stocks last. For new designs, Siemens recommends SINAMICS G120 series.

📦 Spare Part – Very Limited Stock | Tech Support | Please confirm availability before ordering
Contact us for pricing and availability.
 

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