137H3678 Danfoss 4.0kW Three Phase iC7-Automation Variable Speed Drive
Danfoss 137H3678 iC7-Automation frequency converter with 13.5 A output, 380–500 V AC supply, modular architecture and STO safety for industrial automation systems.
Why Choose the Danfoss 137H3678 iC7-Automation Frequency Converter?
The Danfoss 137H3678 is a high-performance iC7-Automation frequency converter designed for advanced industrial automation systems requiring precise motor control, high efficiency and scalable digital integration. As part of Danfoss’ latest generation drive platform, it delivers intelligent control capabilities combined with robust hardware designed for demanding industrial environments.
Engineered for flexibility and reliability, the iC7 series offers modular architecture, integrated industrial IoT functionality and advanced motor control performance. The 137H3678 supports complex automation tasks while maintaining stable operation under variable load conditions, making it suitable for modern production lines and process systems.
With a rated output current of 13.5 A and a three-phase 380–500 V AC supply, this drive is well suited for small to medium industrial motors used in conveyors, pumps, fans, compressors and general automation machinery.
Key Advantages
Advanced iC7-Automation platform for high-precision motor control.
13.5 A output current suitable for medium-duty industrial applications.
380–500 V AC supply range for wide industrial compatibility.
Integrated Safe Torque Off (STO) safety functionality.
High-efficiency motor control for reduced energy consumption.
Built-in industrial IoT readiness for smart factory systems.
Optimised thermal management for continuous operation.
Key Features
Danfoss iC7-Automation series.
Model: 137H3678.
13.5 A rated output current.
380–500 V AC input voltage.
Vector-based motor control for high precision.
Integrated STO safety function (SIL compliant architecture).
Expandable communication modules (fieldbus dependent).
Compact cabinet-mounted design (IP20 enclosure).
High power density for space-efficient installations.
Suitable for continuous industrial duty cycles.
Reliable Motor Control for Industrial Applications
The iC7-Automation platform is designed to deliver precise torque and speed control even in demanding dynamic load conditions. It maintains stable motor performance across a wide operating range, improving process accuracy and energy efficiency.
Its modular architecture allows seamless integration into modern automation systems, supporting scalable communication and digitalisation strategies for Industry 4.0 environments.
Typical Applications
Industrial conveyor systems.
Pumping and fluid handling systems.
HVAC and ventilation systems.
Packaging and production machinery.
Compressors and process equipment.
General industrial automation systems.
Technical Specifications
Power
4 kW
Current
9.2 A
Phase
Three Phase
IP Rating
IP20
Series
iC7-Automation
Product type
Frequency converter
Rated current
13.5 A
Input voltage
380–500 V AC
Input phases
3-phase
Frequency
50 / 60 Hz
Output frequency
0–590 Hz
Protection rating
IP20 (cabinet mounted)
Cooling
Forced air cooling
Frame size
FA03a
Safety
Safe Torque Off (STO)
EMC Filter
None
Frequently Asked Questions
What is the Danfoss 137H3678 used for?
It is used for controlling the speed and torque of AC motors in industrial automation systems.
Does it support industrial communication protocols?
Yes, it supports modular fieldbus options depending on configuration, including Ethernet-based protocols.
Is STO safety included?
Yes, Safe Torque Off (STO) functionality is integrated for safe motor operation.
What type of motors is it suitable for?
It is suitable for standard industrial AC induction motors used in automation and process systems.
Where is it installed?
It is designed for installation inside electrical control cabinets (IP20 environment).
Trusted by Automation Engineers Worldwide
Danfoss iC7-Automation drives provide reliable, intelligent and efficient motor control for modern industrial applications requiring high performance and flexibility.
Power
4 kW
Current
9.2 A
Phase
Three Phase
IP Rating
IP20
Series
iC7-Automation
Product type
Frequency converter
Rated current
13.5 A
Input voltage
380–500 V AC
Input phases
3-phase
Frequency
50 / 60 Hz
Output frequency
0–590 Hz
Protection rating
IP20 (cabinet mounted)
Cooling
Forced air cooling
Frame size
FA03a
Safety
Safe Torque Off (STO)
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.
Can you help specify the correct part?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Do you have stock for urgent orders?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
What are your delivery times and costs?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
What about warranties, returns and faulty items?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
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...