Siemens MICROMASTER 430 VFD 30kW 380-480V 3-Phase Pump Fan Drive 6SE6430-2UD33-0DB0

Siemens MICROMASTER 430 VFD 30kW – Maximum D-Size Drive for Large Pump and Fan Systems

The Siemens MICROMASTER 430, model 6SE6430-2UD33-0DB0, delivers 30kW output power with 380-480V 3-phase input. This unfiltered variable torque drive represents the maximum power rating available in the D-size chassis within the MM430 series. Designed for large-scale pump and fan applications, this drive combines high power output with specialized pump/fan software functions for optimal energy efficiency and system control.

Key Specifications:
- Output Power: 30 kW (variable torque / square-law torque)
- Input Voltage: 380-480V AC 3-phase, +10/-10%, 47-63Hz
- Rated Output Current: 62A
- Output Frequency: 0-650Hz
- Overload Capacity: 110% for 60s, 140% for 3s
- Protection Class: IP20
- Operating Temperature: -10°C to +40°C
- Dimensions (HxWxD): 520mm × 275mm × 245mm
- Weight: 17kg
- Filter: Without built-in filter
- Frame Size: D

Typical Applications:
- Large industrial process pumps
- High-capacity exhaust and supply fans
- HVAC central plant systems
- Large cooling tower installations
- Municipal water/wastewater pump stations
- Industrial ventilation systems
- Large air handling units

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
- 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

D-Size Chassis Information:
The D-size chassis (520×275×245mm) is the largest in the MM430 series before transitioning to the E-size chassis (37kW-45kW). All D-size models (18.5kW, 22kW, 30kW) share identical mounting dimensions, allowing straightforward power upgrades within the same cabinet footprint. Proper clearance of 100mm above and below the drive is required for adequate air circulation.

Selection Guide:
The 30kW model is the maximum power rating in the D-size chassis. Choose 30kW when your pump or fan motor is rated 30kW (40 HP) or when the 22kW model is insufficient. For power requirements above 30kW (up to 37kW), step up to the E-size chassis (650×275×245mm) with the 37kW model.

Important Notes:
- This product is discontinued. Available ONLY as a spare part
- DB0 suffix indicates unfiltered version with specific thermal characteristics
- A BOP or AOP is required for parameter changes beyond factory defaults
- SINAMICS G120 series is the recommended successor for new installations

FAQ:

Q1: What is the power range of the MM430 D-size chassis?
A: The D-size chassis covers three power ratings: 18.5kW (38A), 22kW (45A), and 30kW (62A). All share the same dimensions of 520×275×245mm (H×W×D), making them mechanically interchangeable.

Q2: Can this 30kW drive be used for 37kW motor?
A: Not recommended. For variable torque pump/fan applications, the 30kW drive can typically handle a 37kW motor due to the square-law torque curve (at full speed, a 37kW fan would draw 37kW, exceeding the drive rating). It is safer to select the 37kW E-size model for a 37kW motor.

Q3: What is the difference between DB0 and DA0 variants?
A: Both are unfiltered versions in the D-size chassis. The DB0 suffix is the standard configuration for the 30kW model (6SE6430-2UD33-0DB0). The DA0 variant (6SE6430-2UD33-0DA0) may have different accessory compatibility or thermal characteristics.

Q4: Does this drive require external cooling?
A: The D-size chassis is designed for natural air convection cooling. However, ensure 100mm clearance above and below the drive for proper airflow. If mounted in a sealed cabinet, forced ventilation may be required to maintain ambient temperature below 40°C.

Q5: Is there a braking option available for this model?
A: MM430 D-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. If braking is necessary, external braking solutions would need to be configured.

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