SIEMENS SINAMICS S120 CABINET MODULE

Siemens SINAMICS S120 Cabinet Modules

Modular High-Power Drive System for Multi-Motor Industrial Applications

We Tech Power Solutions Ltd supplies Siemens SINAMICS S120 Cabinet Modules for high-performance industrial drive systems, multi-motor applications, production plants and demanding motion-control installations across Ahmedabad, Gujarat, India and international markets.

SINAMICS S120 Cabinet Modules are a modular cabinet-based drive system designed for multi-motor applications with a central supply infeed and common DC busbar. The modular architecture allows line, motor, braking and auxiliary modules to be combined according to the machine's power, performance and cooling requirements.

Siemens currently specifies Cabinet Modules with total power ratings of up to 4500 kW in air-cooled versions and up to 5700 kW in liquid-cooled versions, depending on the configuration.

For accurate product selection and quotation, provide the complete Siemens MLFB/order number, application, motor data, power requirement, supply voltage, cooling requirement and quantity.

What is Siemens SINAMICS S120 Cabinet Modules?

SINAMICS S120 Cabinet Modules are pre-engineered modular cabinet units for high-power drive applications where several motors or machine axes need to be supplied and controlled from a common drive system.

The system combines a central line infeed and common DC busbar with configurable Motor Modules and other drive components. This architecture is particularly suitable for large machines and industrial plants where coordinated multi-motor operation, high power density and flexible system configuration are required.

Cabinet Modules can be configured with different line, motor, braking and auxiliary modules, allowing the drive system to be matched to the actual process requirements.

Why Choose SINAMICS S120 Cabinet Modules?

Modular High-Power Architecture

Configure line and motor sections according to the required power, number of drives and machine architecture.

Common DC Bus

A common DC busbar connects the drive modules and enables energy exchange between connected motor drives.

Flexible Configuration

Siemens allows different modules to be combined to address specific power, space and cooling requirements.

Air- and Liquid-Cooled Options

Cabinet Modules are available with air-cooled and liquid-cooled designs, supporting applications with different thermal and installation requirements.

High Power Capability

The current Siemens D21.3 documentation lists total system power up to 4500 kW for air-cooled Cabinet Modules and up to 5700 kW for liquid-cooled configurations, depending on the selected system.

Efficient Energy Management

The common DC-link architecture allows energy to be exchanged between drive axes, while suitable line modules can support regenerative operation.

Preconfigured Transport Units

Siemens supplies Cabinet Modules as standardized, preconfigured transport units, helping simplify installation and integration.

Engineering Support

The standardized module architecture and SIZER engineering tool help with drive-system selection, planning and configuration.

SINAMICS S120 Cabinet Modules Architecture

A typical Cabinet Modules system can contain several major sections.

Line Connection Module

Provides the connection between the incoming plant power supply and the drive system.

Line Module

The selected Line Module establishes the required DC-link supply. Depending on the application, Siemens offers:

• Basic Line Modules

• Smart Line Modules

• Active Line Modules

Motor Modules

Motor Modules provide the individual motor-drive outputs required for the connected motors. Multiple Motor Modules can be integrated into the common DC-bus architecture.

Central Braking Module

Used where braking energy needs to be managed through an appropriate braking arrangement.

Auxiliary Power Supply Module

Provides auxiliary power functions according to the selected system configuration.

Control Unit & DRIVE-CLiQ

The drive system uses the SINAMICS control architecture and DRIVE-CLiQ communication to connect compatible drive components, feedback systems and system devices.

The exact module combination depends on the application, power requirement and selected Cabinet Module configuration.

Key Features of Siemens SINAMICS S120 Cabinet Modules

• Modular high-power cabinet architecture

• Designed for multi-motor drive systems

• Central supply infeed

• Common DC busbar

• Line Connection Modules

• Basic, Smart and Active Line Module options

• Motor Modules

• Central Braking Modules

• Auxiliary Power Supply Modules

• Air-cooled configurations

• Liquid-cooled configurations

• Flexible power-system configuration

• Regenerative drive options

• DRIVE-CLiQ system communication

• SIZER engineering support

• Industrial-grade cabinet construction

• Suitable for demanding continuous-duty applications

• Scalable multi-drive architecture

Technical Overview

Specification SINAMICS S120 Cabinet Modules

Brand Siemens

Product Family SINAMICS S120

Product Type Modular cabinet drive system

Primary Application Multi-motor / high-power drive systems

Architecture Central infeed + common DC bus

Line Modules Basic / Smart / Active, configuration dependent

Motor Modules Available according to system configuration

Braking Central Braking Module, configuration dependent

Cooling Air-cooled / Liquid-cooled

Maximum Total Power Up to 4500 kW air-cooled; up to 5700 kW liquid-cooled, configuration dependent

Communication DRIVE-CLiQ and applicable system interfaces

Engineering Siemens SIZER / applicable Siemens engineering tools

Installation Cabinet / plant installation

Control Servo / vector / V/f functions, configuration dependent

Safety Safety functions, configuration dependent

Selection Based on complete MLFB, power, current, motor and application

Siemens' January 2026 D21.3 documentation identifies Cabinet Modules as a modular cabinet system for multi-motor drives with a central supply infeed and common DC busbar. The stated maximum total power is configuration-dependent and reaches up to 4500 kW air-cooled and 5700 kW liquid-cooled.

Important: SINAMICS S120 Cabinet Modules are not one fixed-rated product. The final specifications depend on the selected Line Module, Motor Modules, cooling arrangement, braking system, cabinet configuration and complete MLFB.

Air-Cooled vs Liquid-Cooled Cabinet Modules

Feature Air-Cooled Liquid-Cooled

Cooling Air Liquid

Typical Advantage Conventional industrial installation High power density / restricted environments

Installation Suitable for standard plant environments Useful where cabinet footprint or thermal conditions are demanding

Maximum System Power Up to 4500 kW* Up to 5700 kW*

Application Heavy industrial machinery High-power / space-constrained systems

*Maximum values are configuration-dependent and based on Siemens' current D21.3 documentation.

Siemens also highlights liquid-cooled compact modules for space-constrained applications and demanding environments such as marine and offshore installations.

Typical Applications

SINAMICS S120 Cabinet Modules are particularly suitable for large industrial machines and processes requiring multiple coordinated motors.

Paper Machines

High-performance multi-motor drive systems for paper production and web-processing machinery.

Rolling Mills

Suitable for coordinated high-power motor drives in metal-processing and rolling applications.

Hoisting Equipment

Used in demanding lifting and hoisting systems where controlled acceleration, braking and motor coordination are required.

Test Bays

Suitable for high-power test stands requiring flexible motor-drive configurations.

Marine & Offshore

Liquid-cooled configurations can support space-constrained marine and offshore drive applications.

Conveyors

Useful for large conveyor systems requiring multiple synchronized motor drives.

Production Lines

Suitable for continuous production equipment requiring multiple coordinated drive axes.

Industrial Processing

Can be configured for high-power process machinery requiring centralized drive architecture.

Industries

• Steel & Metals

• Paper & Pulp

• Marine & Offshore

• Material Handling

• Mining

• Cement

• Industrial Processing

• Heavy Machinery

• Manufacturing

• Test & Research Facilities

• Large Production Lines

• Hoisting & Cranes

• Energy & Infrastructure

Siemens specifically cites applications such as paper machines, rolling mills, test bays and hoisting gear for Cabinet Modules.

SINAMICS S120 Cabinet Modules vs S120 Booksize

Both belong to the SINAMICS S120 family, but they target substantially different installation and power requirements.

Feature S120 Cabinet Modules S120 Booksize

Main Positioning High-power cabinet system Compact modular drive system

Primary Application Multi-motor / high-power plants Multi-axis machine applications

Construction Cabinet-based Compact Booksize modules

Power Scale High / very high power Typically machine-level modular power

Common DC Bus Yes Yes

Cooling Air / liquid Primarily cabinet air cooling

Installation Ready cabinet / transport-unit architecture Control cabinet, side-by-side modules

Typical Applications Paper, rolling mills, hoisting, test bays Packaging, machine tools, robotics, plastics

System Scale Plant / heavy machine Machine / OEM

Siemens describes Booksize as a compact modular system for multi-axis motion applications, while Cabinet Modules are designed as modular cabinet systems for multi-motor drives with central supply and a common DC busbar.

SINAMICS S120 Cabinet Modules vs Cabinet Modules-2

Siemens also offers the SINAMICS S120 Cabinet Modules-2 generation.

Cabinet Modules and Cabinet Modules-2 should not be treated as interchangeable products simply because their names are similar. The exact generation, module type, power rating, compatibility and replacement suitability should be checked against the complete MLFB and existing system architecture.

Siemens' current D21.3 documentation lists Cabinet Modules-2 separately and specifies air-cooled total system power up to approximately 3590 kW, depending on configuration.

For retrofit or replacement projects, always provide the existing drive's complete order number before selecting an alternative.

How to Select the Correct SINAMICS S120 Cabinet Modules

1. Define the Application

Identify the machine or process:

• Rolling mill

• Paper machine

• Hoisting system

• Conveyor

• Test stand

• Production line

• Marine/offshore equipment

• Other high-power machinery

2. Calculate Total Motor Power

Determine the combined motor power and individual motor requirements.

3. Determine Number of Motors

Confirm how many motor drives need to be connected to the common DC bus.

4. Select the Line Module

The required Basic, Smart or Active Line Module depends on the incoming supply, regeneration requirements and application.

5. Select Motor Modules

Motor Modules must be matched to the motor rated current, peak current, overload requirements and control mode.

6. Choose Cooling

Determine whether air cooling or liquid cooling is more appropriate for the installation environment, cabinet footprint and thermal requirements.

7. Check Braking Requirements

Determine whether braking modules or regenerative operation are required.

8. Check Control & Communication

Confirm the Siemens controller, DRIVE-CLiQ architecture and applicable network interfaces.

9. Verify Safety Requirements

Select the required Safety Integrated functions based on the machine's safety architecture.

10. Confirm Complete MLFB

The complete Siemens MLFB/order number should always be verified before purchasing or replacing Cabinet Modules.

Siemens SINAMICS S120 Cabinet Modules Supplier in Ahmedabad, Gujarat & India

We Tech Power Solutions Ltd provides Siemens industrial automation and drive sourcing support from Ahmedabad, Gujarat for customers across India.

We can assist with:

• SINAMICS S120 Cabinet Modules identification

• MLFB verification

• Line Module selection

• Motor Module selection

• Air/liquid cooling selection

• Drive-system configuration support

• Replacement and retrofit requirements

• Technical comparison

• Commercial quotation support

• OEM and industrial project sourcing

For an existing installation, send the complete Siemens order number, cabinet nameplate, module photographs and motor details for more accurate identification.

Siemens SINAMICS S120 Cabinet Modules Supplier for UAE & Gulf

We support industrial automation sourcing requirements for customers across:

• UAE

• Dubai

• Abu Dhabi

• Saudi Arabia

• Qatar

• Oman

• Kuwait

• Bahrain

For high-power drive projects, we recommend sharing the complete system requirements before quotation so the Line Modules, Motor Modules, cooling arrangement and auxiliary components can be evaluated together.

Why Choose We Tech Power Solutions Ltd?

• Siemens industrial automation sourcing support

• High-power drive selection assistance

• Ahmedabad-based technical support

• MLFB and product identification

• Application-based drive configuration

• Replacement and retrofit assistance

• OEM project support

• India-wide sourcing

• Gulf-region sourcing support

• Technical and commercial quotation assistance

Frequently Asked Questions

What are Siemens SINAMICS S120 Cabinet Modules?

SINAMICS S120 Cabinet Modules are modular cabinet-based drive systems designed for multi-motor applications with a central supply infeed and common DC busbar.

What is the maximum power of SINAMICS S120 Cabinet Modules?

Siemens' current D21.3 documentation lists total power up to 4500 kW for air-cooled Cabinet Modules and up to 5700 kW for liquid-cooled versions, depending on the complete system configuration.

What cooling options are available?

SINAMICS S120 Cabinet Modules are available in air-cooled and liquid-cooled configurations. Liquid cooling can provide high power density and is useful where installation space or thermal conditions are challenging.

What applications use S120 Cabinet Modules?

Typical applications include paper machines, rolling mills, hoisting systems, test bays, conveyors and other high-power multi-motor industrial systems.

What is the difference between S120 Cabinet Modules and S120 Booksize?

S120 Booksize is a compact modular drive format widely used for multi-axis machine applications, while Cabinet Modules provide a larger cabinet-based architecture for high-power multi-motor systems.

Can We Tech Power Solutions Ltd help with S120 Cabinet Module replacement?

Yes. Share the existing Siemens MLFB/order number, cabinet nameplate, module photographs, motor information and application details. We can assist with product identification and replacement/quotation support.

Need Siemens SINAMICS S120 Cabinet Modules Pricing or Selection Support?

Planning a high-power multi-motor drive system, replacement or retrofit?

Share your Siemens MLFB/order number, motor details, total power requirement, application and required quantity with We Tech Power Solutions Ltd for product identification and quotation support.