Danfoss 137N1851 iC7 Automation frequency converter with three-phase 380-500 V AC input, 9.2 A rated current, IP20 open type enclosure, Modbus TCP communication and integrated Safe Torque Off functionality.
£1,480.00
The Danfoss 137N1851 is a high-performance iC7 Automation frequency converter designed for precise and efficient control of three-phase AC motors in demanding industrial automation applications. As part of the advanced Danfoss iC7 Automation drive series, it is engineered for machine builders, OEMs and industrial facilities that require reliable motor control, flexible communication and dependable operation.
This frequency converter provides advanced motor control functionality while supporting efficient machine performance and reduced mechanical stress. The iC7 Automation platform is designed for easy integration into modern automation systems, with built-in Ethernet connectivity, Modbus TCP communication and integrated functional safety.
With a three-phase 380–500 V AC supply and a 9.2 A current rating, the Danfoss 137N1851 is suitable for industrial motors used in conveyors, pumps, fans, packaging machinery and production systems. Its IP20 open type construction and compact panel-mounted format make it ideal for installation inside electrical control cabinets.
Frequency converters such as the Danfoss 137N1851 regulate motor speed by adjusting the output frequency and voltage supplied to the motor. This enables improved process control, smoother acceleration and deceleration, lower energy consumption and reduced wear on mechanical components.
The Danfoss iC7 Automation platform is designed to support modern industrial networks and control architectures. With integrated safety, flexible I/O and Ethernet-based communication, the 137N1851 provides a dependable motor control solution for advanced machine automation and production environments.
| Power | 4 kW |
|---|---|
| Current | 9.2 A |
| Phase | Three Phase |
| IP Rating | IP20 |
| Series | iC7 Automation |
| Catalogue number | 7FC-AUFA3N05-09A2E20F3-000131285 |
| Product type | Frequency converter |
| Cooling method | Air cooled |
| Input voltage | 380–500 V AC |
| Input phases | 3-phase |
| Rated current | 9.2 A |
| Protection rating | IP20 / Open Type |
| Frame size | FA02b |
| EMC category | C3 |
| Control panel | Control Panel 2.8 OPX20 |
| Standard I/O | 4x DI, 2x DI/O, 2x AI, 1x AO, 2x RO |
| Fieldbus protocol | Modbus TCP OS7MT |
| Other protocol support | Ethernet port, no protocol |
| Functional safety | Safe Torque Off (STO), not upgradable |
| Mounting type | Cabinet / panel mounting |
| EMC Filter | Industrial |
The Danfoss 137N1851 is used to control the speed and torque of three-phase AC motors in industrial automation, machine building and production applications.
The drive operates from a three-phase 380–500 V AC supply.
The Danfoss 137N1851 has a rated current of 9.2 A.
Yes, it includes integrated Safe Torque Off (STO) functional safety, which is not upgradable on this model.
The drive has Modbus TCP OS7MT fieldbus protocol enabled and includes an Ethernet port.
Danfoss iC7 Automation frequency converters are widely used by automation engineers, machine builders and industrial maintenance teams to deliver reliable motor control, efficient operation and seamless integration into modern production systems.
● Service Agreements
Credit Accounts
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.
● frequently asked questions
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.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
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.
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.
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.
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.
● latest blog
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...