6SE6440-2UD33-0EA1
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The Siemens 6SE6440-2UD33-0EA1 is a premium industrial-grade variable frequency drive from the renowned MICROMASTER 440 series. Designed for medium to high power applications, this inverter supports 3-phase AC motors with line voltages from 380 to 480 V and delivers up to 37 kW (50 hp) in low overload mode. It features advanced motor control capabilities including sensorless vector control and multi-point V/f characteristics, ensuring reliable and energy-efficient operation across various industrial environments. Engineered for durability and precision, the MICROMASTER 440 drive offers robust protection with thermal, overvoltage, and short-circuit safeguards to maintain optimal system uptime. This Siemens drive is an ideal choice for automation professionals seeking both performance and flexibility in motor speed regulation.
Key Features of Siemens 6SE6440-2UD33-0EA1
- Supports input voltage range of 380–480 V AC ±10%, 3-phase operation
- Rated output power: 37 kW (50 hp) low overload; 30 kW (40 hp) high overload
- Pulse frequency adjustable up to 4000 Hz for smooth motor control
- Overload capacity: up to 150% output current for 60 seconds
- Sensorless Vector Control options for enhanced dynamic response
- Integrated DC braking and compound braking for precise stopping
- Built-in protection: thermal, overvoltage, undervoltage, ground fault, short circuit
- Fan-cooled design with ambient operation tolerances from -10°C to 50°C
- EMC filters available for electromagnetic compatibility compliance
- Programmable analog and digital inputs/outputs for flexible control integration
Technical Specs of Siemens 6SE6440-2UD33-0EA1
Explore Siemens 6SE6440-2UD33-0EA1 specifications covering voltage, I/O, and communication to ensure system compatibility.
| Parameter | Value |
|---|---|
| Input Phases | 3 AC |
| Line Voltage | 380–480 V ±10% |
| Line Frequency | 47–63 Hz |
| Output Power (LO) | 37 kW / 50 hp |
| Output Power (HO) | 30 kW / 40 hp |
| Pulse Frequency | 4,000 Hz adjustable |
| Output Frequency (V/f control) | 0–650 Hz |
| Overload Capability (LO) | 140% for 3 s; 110% for 57 s (300 s cycle) |
| Overload Capability (HO) | 150% for 60 s (300 s cycle) |
| Ambient Operating Temp. | -10°C to 50°C (depending on load) |
| Cooling | Fan |
| Protection Rating | IP20 |
Applications / Use Case
This Siemens 6SE6440-2UD33-0EA1 is commonly used in industrial automation, process control, and machine automation worldwide. It is well suited for production line systems, packaging and conveyor operations, and factory control panels needing precise motor speed and torque management. Its advanced vector control technology and overload capacity allow reliable operation in demanding environments, making it a preferred drive for both OEMs and system integrators tasked with improving efficiency and uptime in motor-driven processes.
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