137U6812 Danfoss 630kW Three Phase iC7-Automation Variable Speed Drive
Danfoss 137U6812 iC7-Automation air-cooled frequency converter with 1120 A output current, three phase 380-500 V AC supply, PROFINET RT communication, IP54 UL Type 12 enclosure and integrated Safe Torque Off for high-power industrial motor control applications.
Why Choose the Danfoss 137U6812 iC7-Automation Frequency Converter?
The Danfoss 137U6812 is a high-power iC7-Automation frequency converter designed for demanding industrial motor control, automation and process applications. As part of the advanced Danfoss iC7-Automation series, this air-cooled drive delivers precise speed and torque regulation for large motors and heavy-duty machinery.
This frequency converter is engineered for robust installation in industrial environments, offering strong output performance, integrated functional safety and flexible automation connectivity. With PROFINET RT communication, standard I/O and an IP54 / UL Type 12 enclosure, the 137U6812 is well suited to demanding systems requiring reliable drive operation and protected panel-mounted control.
With a rated output current of 1120 A and a three-phase 380–500 V AC supply, the Danfoss 137U6812 is ideal for high-power pumps, fans, compressors, conveyors, processing machinery and large-scale industrial production systems.
Key Advantages
High-power iC7-Automation variable frequency drive for industrial motor control.
1120 A rated output current for demanding large motor applications.
Three-phase 380–500 V AC input suitable for industrial power systems.
IP54 / UL Type 12 enclosure for enhanced environmental protection.
Integrated Safe Torque Off (STO) functional safety.
PROFINET RT fieldbus protocol for automation network integration.
Standard I/O for flexible machine and process control.
Air-cooled design for reliable thermal performance.
Key Features
Danfoss iC7-Automation frequency converter series.
1120 A rated output current.
Three-phase 380–500 V AC input supply.
IP54 / UL Type 12 enclosure.
Frame size FB12.
EMC category C3.
Integrated Safe Torque Off (STO), not upgradable.
PROFINET RT OS7PR fieldbus protocol enabled.
Ethernet port with no additional protocol enabled.
Control Panel 2.8 OPX20 interface.
Standard I/O: 4 digital inputs, 2 digital input/outputs, 2 analogue inputs, 1 analogue output and 2 relay outputs.
Air-cooled frequency converter construction.
High-Power Motor Control for Demanding Applications
Variable frequency drives such as the Danfoss 137U6812 regulate motor operation by adjusting output frequency and voltage. This allows large industrial motors to operate more efficiently, improving process control while reducing mechanical stress across connected equipment.
The iC7-Automation platform is designed for modern industrial systems where high performance, connectivity and reliability are essential. With PROFINET RT communication, standard I/O and integrated STO functionality, the 137U6812 can be integrated into automation networks and engineered control systems.
Typical Applications
High-power industrial pumps and fan systems.
Large conveyors and material handling equipment.
Compressors and process machinery.
Heavy-duty manufacturing and production lines.
Water treatment and industrial utility systems.
Mining, processing and bulk handling equipment.
OEM machinery and large-scale automation projects.
The Danfoss 137U6812 is used to control the speed and torque of large three-phase AC motors in industrial automation, process control and heavy-duty machinery applications.
What is the output current rating of this drive?
The drive has a rated output current of 1120 A.
What supply voltage does the 137U6812 require?
The Danfoss 137U6812 operates from a three-phase 380–500 V AC supply.
What communication protocol is included?
The drive includes PROFINET RT OS7PR fieldbus communication and an Ethernet port.
Does this drive include functional safety?
Yes. The drive includes integrated Safe Torque Off (STO) functionality, which is not upgradable in this configuration.
Trusted for Heavy-Duty Industrial Automation
Danfoss iC7-Automation frequency converters are trusted by machine builders, automation engineers and industrial operators for high-power motor control, flexible communication and dependable performance in demanding automation environments.
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
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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...