Danfoss 137U3970 iC7-Automation enclosed variable frequency drive, 200 kW low harmonic AC drive with PROFINET RT communication, STO safety functions and 380-500 V AC operation.
Why Choose the Danfoss 137U3970 iC7-Automation Enclosed Drive?
The Danfoss 137U3970 is a high-performance iC7-Automation enclosed variable frequency drive (VFD) engineered for demanding industrial applications requiring advanced motor control, energy efficiency and reliable operation. As part of the innovative Danfoss iC7-Automation drive platform, this enclosed drive delivers exceptional performance for heavy-duty machinery, process automation and industrial systems.
Designed for complex industrial environments, the iC7-Automation series combines advanced control functionality, integrated safety features and extensive communication capabilities. The enclosed cabinet design simplifies installation while providing robust protection and dependable operation in industrial facilities.
With a rated output power of 200 kW (300 HP), a 380-500 V AC three-phase supply and a 385 A current rating, the Danfoss 137U3970 is ideally suited for large motors used in manufacturing, material handling, processing plants, water treatment facilities and other demanding industrial applications.
Key Advantages
High-performance enclosed variable frequency drive for industrial automation.
200 kW / 300 HP power rating suitable for demanding motor applications.
385 A current rating for large industrial motor control.
Integrated Safe Torque Off (STO) and SS1-t safety functions.
Built-in PROFINET RT communication for automation integration.
Low harmonic design helps improve power quality.
Enclosed IP21 cabinet simplifies installation and commissioning.
Advanced automation features improve productivity and operational efficiency.
Key Features
Danfoss iC7-Automation enclosed drive series.
200 kW (300 HP) rated output power.
385 A rated current.
Three-phase 380-500 V AC input supply.
Integrated PROFINET RT communication interface.
Low harmonic drive technology.
Safe Torque Off (STO) and SS1-t safety functions.
Control Panel 2.8 OPX20 operator interface.
24 VDC control power supply.
Industrial enclosed cabinet construction.
Advanced Industrial Motor Control
The Danfoss iC7-Automation platform is designed to provide precise motor speed and torque control while improving energy efficiency and process performance. Low harmonic technology helps reduce electrical network distortion while maintaining high operational efficiency.
Integrated industrial communication, advanced safety functions and scalable automation capabilities make the 137U3970 an excellent choice for complex manufacturing and process control environments where reliability and uptime are critical.
Typical Applications
Manufacturing and production machinery.
Material handling and conveyor systems.
Water and wastewater treatment plants.
Industrial pumps and compressors.
Process industries and chemical plants.
Mining and heavy industrial equipment.
Large fan and ventilation systems.
OEM automation and machine building projects.
Technical Specifications
Power
200 kW
Current
385 A
Voltage
500 V
Phase
Three Phase
IP Rating
IP21
Series
iC7-Automation
Product type
Enclosed AC variable frequency drive
Rated output power
200 kW (300 HP)
Rated current
385 A
Input voltage
380-500 V AC
Input phases
3-phase
Drive type
Low harmonic drive
Protection rating
IP21 / UL Type 1
Communication protocol
PROFINET RT
Safety functions
STO, SS1-t
Control supply
24 VDC
Cooling
Air cooled
Net weight
Approx. 690 kg
Gross weight
Approx. 810 kg
Frequently Asked Questions
What is the Danfoss 137U3970 used for?
The Danfoss 137U3970 is an enclosed industrial variable frequency drive used to control large three-phase motors in demanding automation and process applications.
What motor power can this drive support?
This model is rated for 200 kW (300 HP) motor applications.
What supply voltage does the drive require?
The drive operates from a three-phase 380-500 V AC power supply.
What communication protocols are available?
The 137U3970 includes integrated PROFINET RT communication for industrial automation networks.
What safety functions are included?
The drive includes integrated Safe Torque Off (STO) and SS1-t safety functionality to support modern machine safety requirements.
Trusted by Industrial Automation Professionals
Danfoss iC7-Automation drives are trusted worldwide for demanding industrial applications requiring high efficiency, advanced connectivity, reliable motor control and long-term operational performance.
Power
200 kW
Current
385 A
Voltage
500 V
Phase
Three Phase
IP Rating
IP21
Series
iC7-Automation
Product type
Enclosed AC variable frequency drive
Rated output power
200 kW (300 HP)
Rated current
385 A
Input voltage
380-500 V AC
Input phases
3-phase
Drive type
Low harmonic drive
Protection rating
IP21 / UL Type 1
Communication protocol
PROFINET RT
Safety functions
STO, SS1-t
Control supply
24 VDC
Cooling
Air cooled
Net weight
Approx. 690 kg
Gross weight
Approx. 810 kg
No documents available for this product.
Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
Priority sourcing and supply support
Flexible payment terms for qualifying organisations
Support for engineering, maintenance, and operations
500 +
Stock lines ready to ship
1,000 +
Same day dispatches
3500 +
Customers supported
28
Trusted Manfacturers
● frequently asked questions
Common questions about our products and support
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
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We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...