Siemens MICROMASTER 430 VFD 75kW 380-480V 3-Phase Pump Fan Drive 6SE6430-2UD37-5FB0

Siemens MICROMASTER 430 VFD 75kW – Heavy-Duty F-Size Drive for Large Industrial Systems

The Siemens MICROMASTER 430, model 6SE6430-2UD37-5FB0, delivers 75kW output power with 380-480V 3-phase input. This unfiltered variable torque drive is engineered for heavy-duty pump and fan applications requiring robust performance and continuous operation in demanding industrial environments [11†L23-L26].

Key Specifications:
- Output Power: 75 kW (variable torque / square-law torque)
- Input Voltage: 380-480V AC 3-phase, +10/-10%, 47-63Hz
- Rated Output Current: 145 A
- Output Frequency: 0-650Hz
- Overload Capacity: 110% for 60s, 140% for 3s
- Protection Class: IP20
- Operating Temperature: -10°C to +40°C
- Dimensions (H×W×D): 850mm × 350mm × 320mm
- Weight: Approx. 56 kg
- Filter: Without built-in filter
- Frame Size: F

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

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 communication module
- Flying restart for spinning motor capture
- DC injection braking and compound braking

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

Why Choose the 75kW Model?
The 75kW model is the mid-range option in the F-size chassis (55kW-90kW range). It provides substantial power for large industrial pumps and fans while maintaining the same compact F-size footprint, allowing straightforward power upgrades within the same cabinet layout.

Important Notes:
- This product is discontinued. Available ONLY as a spare part [11†L31-L32]
- A successor model (6SE6430-2UD37-5FA0) is available for comparison [11†L27-L30]
- A BOP or AOP is required for parameter changes
- SINAMICS G120 series is the recommended successor for new designs

FAQ:

Q1: Is there a successor product available?
A: Yes. Siemens lists a successor model (6SE6430-2UD37-5FA0) for comparison [11†L27-L30]. For new installations, the SINAMICS G120 series is the recommended replacement.

Q2: What is the output frequency range for this drive?
A: The output frequency is 0-650Hz, providing wide speed control capability for pump and fan applications.

Q3: Does this drive include a braking transistor?
A: No. MM430 F-size models do not include built-in braking transistors. For pump and fan applications, dynamic braking is rarely required due to the low inertia load profile.

Q4: Can this drive be used for high starting torque applications?
A: As a variable torque drive, MM430 is optimized for pump and fan loads where starting torque requirements are moderate (typically 30-50% of rated torque). For high starting torque applications, consider MM440 series.

Q5: What is the input current requirement?
A: At full load, the input current is approximately 145A with 380-480V input. Ensure your supply circuit can handle this current with appropriate branch circuit protection.

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