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Siemens MICROMASTER MM550/3 Variable Frequency Drive - 5.5 KW

Name: Siemens 6SE9221-3DC40
Brand: Siemens
SKU: 6SE9221-3DC40
Availability: InStock

Siemens MICROMASTER MM550/3 VFD - 5.5 KW, 380-500V.

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ManufacturerSiemens

Part number6SE9221-3DC40

Part Number 6SE9221-3DC40

Manufacturer Siemens

Series MICROMASTER MM550/3

Input Voltage 380-500V 3AC +/-10%

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5.5 KW Constant Torque rating 380-500V 3-phase input IP20 protection 150% overload capability Precise motor speed control MICROMASTER series

Product description

The Siemens 6SE9221-3DC40 is a MICROMASTER MM550/3 variable frequency drive (VFD) designed for industrial motor control. It operates on a 380-500V 3-phase AC power supply with a frequency of 50/60 Hz. This model is rated for a constant torque output of 5.5 KW and features an overload capacity of 150% for 60 seconds. The drive has an IP20 protection rating.

This VFD is suitable for a wide range of applications requiring precise speed control of AC motors, including pumps, fans, conveyors, and other machinery in manufacturing, material handling, and building automation. Its robust design ensures reliable performance in industrial environments.

Stanlo Automation, a veteran-owned distributor of surplus industrial automation parts, provides the Siemens 6SE9221-3DC40. We offer cost-effective solutions for your drive replacement and automation needs, ensuring you receive quality components.

Technical specifications

Part Number	6SE9221-3DC40
Manufacturer	Siemens
Series	MICROMASTER MM550/3
Input Voltage	380-500V 3AC +/-10%
Frequency	50/60 Hz
Output Power (Constant Torque)	5.5 KW
Overload	150% for 60 sec
Dimensions	215 x 185 x 195 mm (H x W x D)
Protection	IP20
Ambient Temp	0-50 deg C

Common applications

Pump control

Fan control

Conveyor systems

Machine tools

Industrial automation

HVAC systems

Compatible systems

3-phase AC induction motors

Also known as

Siemens MM550/3 drive Siemens 6SE9221 VFD MICROMASTER 550/3

Replaces / compatible with

This MICROMASTER MM550/3 drive is a direct replacement for older units or can be integrated into new systems requiring 5.5 KW motor control. It is compatible with standard AC induction motors.

Technical note

Expert tip

Ensure the drive is installed in an environment with adequate ventilation and within the specified ambient temperature range (0-50°C) to ensure optimal performance and longevity.

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Frequently asked questions

What is the maximum overload capacity of the Siemens 6SE9221-3DC40 VFD?

The Siemens 6SE9221-3DC40 MICROMASTER MM550/3 VFD has an overload capacity of 150% for 60 seconds. This allows it to handle temporary peak loads common in motor starting.