137H3791 Danfoss 45kW Three Phase iC7-Automation Variable Speed Drive
Danfoss 137H3791 iC7 Automation frequency converter designed for industrial motor control, offering advanced performance for automation and process applications.
Why Choose the Danfoss 137H3791 iC7 Automation Drive?
The Danfoss 137H3791 is a high-performance iC7 Automation frequency converter designed for demanding industrial motor control applications. It delivers precise speed and torque regulation for AC motors, supporting efficient and stable operation across modern automation systems.
As part of the advanced Danfoss iC7 drive platform, this model is engineered for industrial environments requiring high reliability, flexible configuration and seamless integration with modern fieldbus and industrial Ethernet systems. It is widely used in OEM machinery and process automation where performance and uptime are critical.
This drive operates on a three-phase 380–500 V AC supply and is typically configured for industrial motor loads up to around 45 kW, making it suitable for conveyors, pumps, compressors and other medium-duty automation applications. {index=0}
Key Advantages
Advanced iC7 Automation variable frequency drive technology.
Designed for medium-duty industrial motor control.
380–500 V AC input range for broad industrial compatibility.
Integrated Safe Torque Off (STO) safety function.
High efficiency operation for reduced energy consumption.
Flexible integration with industrial communication networks.
Key Features
Danfoss iC7 Automation series frequency converter.
Rated for approximately 90 A output current class.
Supports induction and permanent magnet motor control.
Built-in STO safety functionality.
Advanced control architecture for dynamic load handling.
Modular communication options for industrial automation systems.
Robust design for harsh industrial environments.
Reliable Motor Control for Industrial Automation
The Danfoss iC7 Automation drive regulates motor performance by adjusting output voltage and frequency, enabling precise control of speed and torque. This improves process stability, reduces mechanical wear and enhances overall system efficiency.
Its advanced control system is designed to handle variable load conditions, ensuring consistent performance in demanding industrial environments such as continuous production and process automation.
Typical Applications
Industrial conveyor systems.
Pumping and fluid handling systems.
HVAC and ventilation systems.
Compressors and process equipment.
Manufacturing automation systems.
OEM machine integration and control panels.
Technical Specifications
Power
45 kW
Current
90 A
Phase
Three Phase
IP Rating
IP21
Product family
iC7 Automation
Product type
Frequency converter / variable frequency drive
Input voltage
380–500 V AC
Input phases
3-phase
Input frequency
50 / 60 Hz
Rated current
90 A
Power rating
approx. 45 kW / 60 hp
Protection rating
IP21 / UL Type 1
Frame size
FK07
Control functions
Advanced speed and torque control
Safety function
Safe Torque Off (STO)
Cooling type
Air-cooled
EMC Filter
None
Frequently Asked Questions
What is the Danfoss 137H3791 used for?
It is used to control speed and torque of AC motors in industrial automation and process applications.
What voltage range does it support?
It operates on a three-phase 380–500 V AC supply.
What power range does this model support?
It is typically used for motors around 45 kW / 60 hp depending on configuration.
Does it include safety features?
Yes, it includes Safe Torque Off (STO) functionality for safe motor operation.
What industries use this drive?
It is commonly used in manufacturing, HVAC, pumping systems, conveyors and industrial automation.
Trusted in Industrial Automation Worldwide
Danfoss iC7 Automation drives are widely used across industry to deliver precise motor control, improved energy efficiency and reliable long-term performance in demanding applications.
Power
45 kW
Current
90 A
Phase
Three Phase
IP Rating
IP21
Product family
iC7 Automation
Product type
Frequency converter / variable frequency drive
Input voltage
380–500 V AC
Input phases
3-phase
Input frequency
50 / 60 Hz
Rated current
90 A
Power rating
approx. 45 kW / 60 hp
Protection rating
IP21 / UL Type 1
Frame size
FK07
Control functions
Advanced speed and torque control
Safety function
Safe Torque Off (STO)
Cooling type
Air-cooled
EMC Filter
None
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
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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...