Siemens SINAMICS S120 PM340 Power Modules

Reliable Power Modules for Industrial Drive and Motion Control Systems

The Siemens SINAMICS S120 PM340 Power Module series is designed for industrial drive applications requiring reliable motor power output, flexible system integration and dependable replacement support. As part of the modular SINAMICS S120 drive platform, PM340 power modules are used in configured drive systems for machine automation, production equipment and industrial motion-control applications.

SINAMICS S120 is a high-performance Siemens drive system developed for demanding industrial requirements. Its modular architecture allows machine builders and maintenance teams to configure drive solutions according to the application, motor, control strategy and required system performance. Within this platform, the PM340 Power Module serves as the power-stage component responsible for supplying the connected motor in a compatible S120 drive configuration.

The PM340 series is especially relevant for customers maintaining existing Siemens-driven machinery, replacing installed power modules or sourcing spare parts for industrial automation equipment. Because individual PM340 units differ in output rating, frame size, cooling method and electrical configuration, the complete Siemens order number should always be checked before purchase or replacement.

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What Is a Siemens SINAMICS S120 PM340 Power Module?

A Siemens SINAMICS S120 PM340 is a power module used within a compatible SINAMICS drive system. It is not simply a standalone product selected only by power rating; it must correspond to the required drive configuration, motor data, system voltage and control architecture.

In a typical system, the PM340 Power Module works together with suitable control and commissioning components. Siemens commissioning documentation identifies the PM340 as a Blocksize Power Module used in SINAMICS S120 configurations; for example, a compatible CU310-2 single-axis control unit may be plugged onto a PM340 Power Module in an appropriate system design.

This modular construction makes PM340 units suitable for replacement projects where the original Siemens component needs to be identified accurately and replaced with a corresponding part number.

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Key Features of the SINAMICS S120 PM340 Series

Modular SINAMICS S120 System Integration

PM340 Power Modules form part of the Siemens SINAMICS S120 modular drive platform. This allows the power module to be selected and configured as part of a drive solution suited to the machine’s motor-control and automation requirements.

Designed for Industrial Motor Drive Applications

The PM340 series is intended for industrial equipment where controlled motor operation, repeatable performance and reliable system maintenance are required. Depending on the complete S120 configuration, the system can support precise control of speed, torque and motion-related functions.

Multiple Ratings for Different Machine Requirements

The PM340 family includes different order numbers for different output requirements. Siemens product listings show PM340 variants with different rated output values, such as 4.0 kW, 7.5 kW, 30 kW and 90 kW units within the 380–480 V three-phase product range. The exact specification must be verified by the complete order number of the required module.

Suitable for Replacement and Spare-Parts Procurement

Many PM340 product listings are identified by Siemens as spare parts, making the series particularly relevant to users maintaining installed machines and legacy drive systems. Selecting the correct original order number helps reduce risk during replacement sourcing and installation.

Flexible Drive Control Through the SINAMICS S120 Platform

When configured as part of a compatible S120 drive system, Siemens SINAMICS S120 supports vector control, servo control and V/f control. This allows the system to serve a variety of industrial drive tasks, from controlled continuous operation to demanding motion-control applications.

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Siemens SINAMICS S120 PM340 Series Overview

Item	Series Information
Manufacturer	Siemens
Product Family	SINAMICS S120
Product Series	PM340
Product Type	Converter Power Module / Drive Power Module
Typical Function	Power-stage component for compatible industrial drive systems
Common Voltage Class	Individual PM340 models are available in 3 AC 380–480 V, 50/60 Hz configurations
Output Rating	Varies by complete Siemens order number
Construction	Blocksize PM340 configurations are available
Control Capability	Determined by the complete configured SINAMICS S120 system
Typical Procurement Purpose	Replacement, maintenance, machine repair and spare-parts supply

Important: Output current, rated power, frame size, cooling type and accessory compatibility vary by individual PM340 model. Always verify the full Siemens part number and product nameplate before ordering.

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Typical Siemens S120 PM340 Product Variants

The following examples illustrate how individual PM340 models can differ. These are examples within the series and should not be interpreted as the complete product range.

Siemens Order Number	Product Description	Input	Output / Rated Power
6SL3210-1SE21-0UA0	SINAMICS S120 PM340 Power Module	3 AC 380–480 V, 50/60 Hz	10 A / 4.0 kW
6SL3210-1SE21-8AA0	SINAMICS S120 PM340 Power Module	3 AC 380–480 V, 50/60 Hz	18 A / 7.5 kW
6SL3210-1SE26-0AA0	SINAMICS S120 PM340 Power Module	3 AC 380–480 V, 50/60 Hz	60 A / 30 kW
6SL3210-1SE31-8AA0	SINAMICS S120 PM340 Power Module	3 AC 380–480 V, 50/60 Hz	178 A / 90 kW

The examples above are based on Siemens product listings for the corresponding order numbers. Exact availability and replacement suitability should be confirmed before quotation or installation.

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Industrial Applications of SINAMICS S120 PM340 Power Modules

The Siemens SINAMICS S120 platform is used in demanding industrial motion-control and drive applications. PM340 Power Modules may be found in compatible S120 systems serving equipment such as:

• Packaging machines
• Textile machinery
• Printing and processing equipment
• Plastics machinery
• Woodworking machinery
• Machine tools
• Crane and handling systems
• Test benches
• Automated production equipment
• Industrial machine replacement and maintenance projects

Siemens describes SINAMICS S120 as supporting both single-axis and multi-axis applications in industries including packaging, plastics, textiles, printing, woodworking, cranes, machine tools, rolling mills and test benches.

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Why Choose Siemens SINAMICS S120 PM340 Power Modules?

Reliable Replacement for Existing Siemens Drive Systems

When an installed PM340 module requires replacement, sourcing the correct Siemens part number can help maintain alignment with the original machine design. This is particularly important for industrial equipment where electrical rating, cabinet dimensions and system configuration must correspond correctly.

Suitable for Industrial Maintenance and Spare-Parts Supply

For factories, machine builders and repair service providers, maintaining access to Siemens drive spare parts can reduce equipment downtime and simplify maintenance planning. PM340 Power Modules are relevant for servicing machines already equipped with SINAMICS S120 drive solutions.

Scalable Selection by Application Requirement

Different PM340 order numbers provide different power and current ratings. This allows the correct module to be selected according to the installed system requirement rather than relying on a generic replacement approach.

Supported by the Siemens SINAMICS Drive Platform

SINAMICS S120 provides flexible configuration, diagnostic support and drive engineering capabilities for industrial applications. Siemens states that S120 can be configured and commissioned through SINAMICS Startdrive in TIA Portal from version V15 onward.

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How to Select the Correct PM340 Power Module

A Siemens SINAMICS S120 PM340 replacement should be selected according to the exact installed product and application requirements. Customers should not rely only on appearance or a general description such as “S120 PM340 inverter.”

Before ordering, confirm the following:

Selection Item	Why It Matters
Complete Siemens Order Number	Identifies the exact module configuration
Input Voltage	Must match the existing electrical system
Output Current	Must correspond to the drive and motor requirement
Rated Power	Helps verify the appropriate capacity
Frame Size	Important for cabinet mounting and physical replacement
Cooling Method	Relevant to installation and thermal management
Existing Control Unit	Helps verify system compatibility
Required Condition	Confirm whether new, surplus, used or refurbished supply is acceptable
Nameplate Photo	Reduces identification errors during quotation

For replacement projects, providing a clear photograph of the original Siemens nameplate is strongly recommended. Similar PM340 units may look alike while having different power ratings or mechanical configurations.

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Replacement and Maintenance Considerations

When maintaining a SINAMICS S120 drive system, proper handling and installation are essential. PM340 Power Modules operate within industrial electrical systems and should be installed, commissioned and serviced only by qualified personnel.

Maintenance and replacement planning may include:

• Confirming the original order number before purchasing
• Checking cabinet ventilation and surrounding environmental conditions
• Inspecting wiring and terminal condition during scheduled shutdowns
• Matching the replacement module to the existing system rating
• Reviewing drive parameters and commissioning requirements after replacement
• Confirming compatibility with installed control and communication components

A correctly identified replacement module can support faster machine restoration and reduce the risk of purchasing a product that does not match the original application.

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Frequently Asked Questions About Siemens SINAMICS S120 PM340

What is the Siemens SINAMICS S120 PM340 series?

The Siemens SINAMICS S120 PM340 series consists of Power Modules used in compatible Siemens industrial drive systems. These modules provide the power-stage functionality required for motor operation in suitable S120 configurations.

Is the PM340 a complete inverter?

The PM340 is more accurately described as a Power Module within a configured SINAMICS drive system. A complete functioning drive application may require compatible control, commissioning and system components.

What voltage range is available for Siemens PM340 modules?

Individual Siemens PM340 product listings include versions specified for 3 AC 380–480 V, 50/60 Hz input. Always verify the exact order number, as electrical and mechanical specifications vary between products.

Are all PM340 modules the same power rating?

No. PM340 products are available in different output ratings. For example, official Siemens product listings include PM340 variants rated at 4.0 kW, 7.5 kW, 30 kW and 90 kW.

Can SINAMICS S120 be used for precision motion-control applications?

Yes. Siemens describes SINAMICS S120 as a modular high-performance drive system for demanding motion-control applications. Depending on configuration, it supports vector, servo and V/f control modes for speed, torque and position-control tasks.

How do I identify the correct replacement PM340 module?

The safest method is to provide the complete Siemens order number and a photograph of the original product nameplate. Power rating, voltage, frame size, cooling configuration and system compatibility should all be confirmed before ordering.

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Supply of Siemens SINAMICS S120 PM340 Power Modules

We supply Siemens SINAMICS S120 PM340 Power Modules for industrial equipment maintenance, drive-system replacement and spare-parts procurement requirements.

Whether you are sourcing a specific PM340 order number or identifying a replacement for an existing Siemens drive module, please send us your product details for availability checking and quotation support.

For faster product identification, please provide:

• Complete Siemens order number
• Required quantity
• Product condition requirement
• Clear nameplate photo, where available
• Destination country
• Required delivery schedule

Request a Quote for Siemens S120 PM340 Power Modules

Looking for a Siemens SINAMICS S120 PM340 Power Module for an existing industrial drive system?

Send us your required Siemens part number or product nameplate photograph. We can assist with model identification, availability confirmation and quotation support for Siemens industrial drive spare parts.