137G9866 Danfoss 22kW Three Phase iC7-Automation Variable Speed Drive
Danfoss 137G9866 VLT Micro Drive FC 51 variable frequency drive for efficient AC motor speed control, automation and industrial machinery applications.
The Danfoss 137G9866 VLT® Micro Drive FC 51 is a compact and highly reliable AC variable frequency drive (VFD) engineered for precise speed control of AC motors in industrial and commercial applications. As part of the trusted Danfoss VLT Micro Drive series, it provides dependable motor control, energy efficiency and simple commissioning in a space-saving design.
Designed for OEMs, panel builders and industrial automation professionals, the VLT Micro Drive combines advanced motor control functionality with straightforward installation and operation. Its user-friendly interface, integrated protection features and robust construction make it suitable for a wide range of machinery and process control applications.
With support for variable speed motor control, integrated communication capabilities and compact panel mounting, the Danfoss 137G9866 helps reduce energy consumption while improving process performance and equipment longevity. Its reliable design ensures consistent operation even in demanding industrial environments.
Key Advantages
Compact variable frequency drive for industrial motor control.
Designed for OEM machinery and automation systems.
Improves energy efficiency through variable speed operation.
Simple commissioning with intuitive parameter structure.
Integrated motor protection and monitoring functions.
Reliable operation with high-quality Danfoss engineering.
Key Features
Danfoss VLT® Micro Drive FC 51 series.
Compact panel-mounted design.
Built-in RS485 communication interface.
Integrated PID controller functionality.
Automatic Energy Optimiser (AEO).
Electronic thermal motor protection.
Short-circuit, temperature and earth fault protection.
User-friendly local control panel operation.
Reliable Motor Control for Industrial Applications
The Danfoss VLT Micro Drive range is designed to deliver reliable and efficient control of AC motors while minimising installation complexity. Variable speed control enables improved process accuracy, reduced mechanical wear and lower energy consumption compared with fixed-speed motor operation.
Built with the same engineering principles as the wider Danfoss VLT drive family, the 137G9866 offers dependable performance, intuitive operation and robust protection features for industrial automation, machinery and process applications.
Typical Applications
Industrial conveyors and material handling systems.
Packaging and production machinery.
Pumps and booster systems.
Fans and ventilation equipment.
Mixers and processing machinery.
OEM machine building and automation systems.
Technical Specifications
Power
22 kW
Current
43 A
Phase
Three Phase
IP Rating
IP20
Series
VLT® Micro Drive FC 51
Part number
137G9866
Product type
AC variable frequency drive
Motor control
Variable speed AC motor control
Protection rating
IP20
Mounting type
Panel mounting
Integrated functions
PID controller, AEO, motor protection
Motor protection
Electronic thermal relay (ETR)
Cooling
Optimised heat dissipation design
Compliance
RoHS compliant
EMC Filter
None
Frequently Asked Questions
What is the Danfoss 137G9866 used for?
The Danfoss 137G9866 is a VLT Micro Drive designed to provide efficient variable speed control of AC motors in industrial and commercial applications.
Does this drive help reduce energy consumption?
Yes. Variable speed motor control and the integrated Automatic Energy Optimiser help improve overall energy efficiency.
What communication options are available?
The drive includes an integrated RS485 communication interface with support for Modbus RTU communication.
What protection features are included?
The drive includes electronic thermal motor protection, temperature protection, earth fault protection and short-circuit protection.
Where is the drive typically installed?
The Danfoss 137G9866 is typically installed inside electrical control panels, automation cabinets and industrial machinery.
Trusted by Industrial Automation Professionals
Danfoss VLT Micro Drives are widely used by machine builders, panel manufacturers and industrial engineers who require reliable motor control, energy efficiency and dependable long-term performance.
Power
22 kW
Current
43 A
Phase
Three Phase
IP Rating
IP20
Series
VLT® Micro Drive FC 51
Part number
137G9866
Product type
AC variable frequency drive
Motor control
Variable speed AC motor control
Protection rating
IP20
Mounting type
Panel mounting
Integrated functions
PID controller, AEO, motor protection
Motor protection
Electronic thermal relay (ETR)
Cooling
Optimised heat dissipation design
Compliance
RoHS compliant
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
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.
What product ranges do you supply
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...