The 6SE6440-2UD21-5AA1 is a compact inverter from the Siemens MICROMASTER 440 series. It lacks a built-in filter and is suitable for 380–480 V three-phase AC power grids. It supports both constant torque and square torque power curves and boasts a high overload capacity of 150% for 60 s and 200% for 3 s. It is designed for motor speed control applications requiring high dynamic performance and low-speed, high-torque output. Utilizing vector control technology, it supports an output frequency range of 0–650 Hz, enabling high-precision speed and torque control of asynchronous motors.

Product Status
Original New // Ready in Stock // Same Days Shipping
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Product info
Part Number: 6SE6440-2UD21-5AA1
Brand/ Manufacturer: SIEMENS
Product Description: MICROMASTER 440 Inverter
Condition: In stock
Country of Origin: Germany
Shipping port: Xiamen, China
Warranty: 12 months
Rated input voltage: 3 AC 380–480 V ±10%, 47–63 Hz
Rated output power: 1.5 kW (1.5 kW for both constant torque and square torque curve)
Rated output current: 4.1 A
Overload capacity: 150% rated current for 60 s; 200% rated current for 3 s
Output frequency range: 0…650 Hz
Control mode: V/f, vector control (sensorless/with encoder)
Protection degree: IP20
Ambient temperature: –10°C…+50°C (without derating)
Dimensions (H×W×D): 173 mm × 73 mm × 149 mm
Weight: Approximately 1.3 kg
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