137L3594 Danfoss 450kW Three Phase iC7-Automation Variable Speed Drive
Danfoss 137L3594 iC7-Automation frequency converter, an air-cooled three-phase 380-500 V AC industrial drive with 799 A output current, Modbus TCP OS7MT communication and integrated STO safety functionality.
Why Choose the Danfoss 137L3594 iC7-Automation Frequency Converter?
The Danfoss 137L3594 is a high-capacity iC7-Automation frequency converter designed for precise speed and torque control of large three-phase motors in demanding industrial automation and process applications. As part of the advanced Danfoss iC7-Automation drive series, it is engineered for reliable motor control, flexible communication and efficient operation in heavy-duty industrial environments.
This air-cooled frequency converter combines robust drive technology with integrated I/O, Ethernet connectivity and functional safety support. Its IP21 / UL Type 1 enclosure provides enhanced protection for industrial installations, while its high current rating makes it suitable for large motor systems and demanding machinery applications.
With a rated output current of 799 A and a three-phase 380-500 V AC supply, the Danfoss 137L3594 is suitable for high-power industrial motors used in pumps, fans, compressors, conveyors and process machinery. The drive includes Modbus TCP OS7MT fieldbus capability, a 2.8 OPX20 control panel and integrated Safe Torque Off (STO) functionality.
Key Advantages
High-capacity frequency converter for demanding industrial automation applications.
799 A output current rating for large motor control systems.
Three-phase 380-500 V AC input compatible with industrial power supplies.
IP21 / UL Type 1 enclosure for enhanced installation protection.
Integrated Safe Torque Off (STO) safety functionality.
Ethernet connectivity for automation network integration.
Standard I/O configuration for flexible control connections.
Key Features
Danfoss iC7-Automation frequency converter series.
799 A rated output current.
Three-phase 380-500 V AC input supply.
IP21 / UL Type 1 protection rating.
Frame size FK11.
Air-cooled industrial drive construction.
Integrated Safe Torque Off (STO) functionality.
Modbus TCP OS7MT communication enabled.
Ethernet port for industrial network connectivity.
Control Panel 2.8 OPX20 included.
Standard I/O configuration with digital, analogue and relay outputs.
EMC category C2 configuration.
High-Power Motor Control for Industrial Automation
Frequency converters such as the Danfoss 137L3594 regulate motor speed by controlling the voltage and frequency supplied to the motor. This allows high-power industrial machinery to operate more efficiently, improves process control and helps reduce mechanical stress across pumps, fans, compressors and production equipment.
The iC7-Automation platform is designed for modern industrial systems where connectivity, safety and high-performance control are essential. With integrated I/O, Modbus TCP, Ethernet connectivity and STO functionality, this drive is well suited to demanding automation, process control and heavy-duty motor applications.
Typical Applications
Large industrial pumps and pumping stations.
High-capacity fans and ventilation systems.
Compressors and process air systems.
Heavy-duty conveyors and material handling equipment.
Production and processing machinery.
Industrial process control systems.
OEM machinery and automation systems.
High-power drive installations in industrial environments.
The Danfoss 137L3594 is used to control the speed and torque of large three-phase AC motors in industrial automation, machinery and process control applications.
What output current is this drive rated for?
The drive has a rated output current of approximately 799 A.
What supply voltage does the drive require?
The Danfoss 137L3594 operates from a three-phase 380-500 V AC supply.
What protection rating does this model have?
This model has an IP21 / UL Type 1 protection rating for enhanced industrial installation protection.
Does the Danfoss 137L3594 include safety functionality?
Yes, the drive includes integrated Safe Torque Off (STO) functionality for machine safety applications.
Trusted by Industrial Automation Professionals
Danfoss iC7-Automation frequency converters are trusted by engineers, machine builders and panel builders worldwide for reliable motor control, efficient operation and flexible automation integration.
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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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...