MICROMASTER 420 inverter 4 kW without filter 200-240V 3AC 6SE6420-2UC24-0CA1

6SE6420-2UC24-0CA1 MICROMASTER 420 without filter 200-240 V 3 AC+10/-10% 47-63 Hz Constant torque 4 kW Overload 150% for 60s Square-law torque 4 kW

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MICROMASTER 420 without filter 200-240 V 3 AC+10/-10% 47-63 Hz Constant torque 4 kW Overload 150% for 60s Square-law torque 4 kW 245x 185x 195 (HxWxD) Degree of protection IP20 Ambient temperature -10+50 °C without AOP/BOP 6SE6420-2UC24-0CA1_datasheet_en

Technical specifications

Technical dataMICROMASTER 420
Mains voltage and power ranges



200 V to 240 V 1 AC ±10 %0.12 kW to 3 kW
200 V to 240 V 3 AC ±10 %0.12 kW to 5.5 kW
380 V to 480 V 3 AC ±10 %0.37 kW to 11 kW
Power frequency47 Hz to 63 Hz
Output frequency0 … 650 Hz, (limitation to 550 Hz in production to comply with legal requirements) 1)
Power factor≥ 0.95
Inverter efficiency96 % to 97 %
Overload capabilityOverload current 1.5 x rated output current (i.e. 150 % overload capability) for 60 s, cycle time 300 s
Inrush currentLess than rated input current
Control methodLinear V/f characteristic; quadratic V/f characteristic; multipoint characteristic (programmable V/f characteristic); flux current control (FCC)
Pulse frequency


16 kHz (standard with 230 V 1/3 AC)
4 kHz (standard with 400 V 3 AC)
2 kHz to 16 kHz (in 2 kHz steps)
Fixed frequencies7, programmable
Skip frequency ranges4, programmable
Setpoint resolution



0.01 Hz digital
0.01 Hz serial
10 bit analog
Digital inputs3 fully programmable isolated digital inputs; switchable PNP/NPN
Analog input1, for setpoint or PI controller (0 V to 10 V, scaleable or for use as 4th digital input)
Relay outputs1, programmable, 30 V DC/5 A (resistive load); 250 V AC/2 A (inductive load)
Analog output1, programmable (0 mA to 20 mA)
Serial interfacesRS-485, optional RS-232
Motor cable lengths 
  • without output choke


max. 50 m (shielded)
max. 100 m (unshielded)
  • with output choke
see variant dependent options
Electromagnetic compatibility


Inverter available with internal EMC filter Class A; available as options are EMC filters to EN 55 011, Class A or Class B
BrakingDC braking, compound braking
Degree of protectionIP20
Operating temperature–10 °C to +50 °C (+14 °F to +122 °F)
Storage temperature–40 °C to +70 °C (–40 °F to +158 °F)
Relative humidity95 % (non-condensing)
Installation altitudeUp to 1000 m above sea level without derating
Standard SCCR
(Short Circuit Current Rating) 2)
100 kA
Protection features for










Earth faults
Short circuit
Stall prevention
Locked motor protection
Motor overtemperature
Inverter overtemperature
Parameter interlock
Compliance with standardsUL, cUL, CE, c-tick
CE markingConformity with low-voltage directive 73/23/EEC
Cooling-air volumetric flow required, dimensions and weights
(without options)




Frame size (FS)Cooling-air volumetric flow required (l/s)/(CFM)H x W x D (mm)



Weight, approx. (kg)
A4.8/10.2173 x 73 x 1491.0
B24/51202 x 149 x 1723.3
C54.9/116.3245 x 185 x 1955.0
Cubic Feet per Minute


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