Siemens – 6SE6420‑2UD24‑0BA1 – MICROMASTER 420 Unfiltered 4 kW VFD

The Siemens 6SE6420‑2UD24‑0BA1 VFD is a factory spare part version of the MICROMASTER 420 series, designed for three-phase motor control on 380–480 VAC mains (±10 %), offering seamless speed regulation and constant torque delivery up to 4 kW. This version comes without input/output filters (unfiltered), making it suitable for OEM or retrofitting applications requiring custom external filtering or space-saving drive installations.  

Key Features:

• Rated Power: 4.0 kW (5 hp) constant torque; overload rated at 150 % for 60 s  

• Supply Voltage: 3-phase AC 380–480 V ±10 %, 47–63 Hz  

• Rated Current: 10.2 A; high-overload (HO) version up to 12.8 A depending on rating mode  

• Output Frequency Range: 0–650 Hz (typically limited to 550 Hz in production units)  

• Interfaces: One RS‑232 serial port, one RS‑485 port; PROFIBUS and DeviceNet support; no Ethernet/profinet  

• Digital/Analog I/O: 3 digital inputs, 1 digital output, 1 analog input, 1 analog output, 1 relay output  

• Cooling: Internal fan; frame size B; IP20 rated housing, open type; ambient temperature operation −10 °C to +50 °C, storage −40 °C to +70 °C  

• Dimensions & Weight: Height 202 mm × Width 149 mm × Depth 172 mm; weight approx. 3.3 kg