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137L3666 Danfoss 45kW Three Phase iC7-Automation Variable Speed Drive
Danfoss 137L3666 iC7-Automation frequency converter, an air-cooled three-phase 380-500 V AC industrial drive with 90 A output current, Modbus TCP OS7MT communication and integrated STO safety functionality.
£7,615.50
Why Choose the Danfoss 137L3666 iC7-Automation Frequency Converter?
The Danfoss 137L3666 is a high-performance iC7-Automation frequency converter designed for precise speed and torque control of three-phase motors in demanding industrial automation applications. As part of the advanced Danfoss iC7-Automation drive series, it is engineered for machine builders, panel builders and industrial operators who require reliable motor control, flexible communication and efficient system integration.
This air-cooled frequency converter combines intelligent drive technology with integrated I/O, Ethernet connectivity and functional safety support. Its IP21 / UL Type 1 enclosure provides enhanced installation protection, making it suitable for industrial electrical panels and automation environments where dependable variable speed control is required.
With a rated output current of 90 A and a three-phase 380-500 V AC supply, the Danfoss 137L3666 is ideal for industrial motors used in conveyors, pumps, fans, compressors, processing equipment and automation machinery. The drive includes Modbus TCP OS7MT fieldbus capability, a 2.8 OPX20 control panel and integrated Safe Torque Off (STO) functionality.
Key Advantages
- Advanced frequency converter for industrial automation applications.
- 90 A output current rating for demanding 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.
- Built-in Modbus TCP OS7MT fieldbus protocol support.
- Ethernet connectivity for automation network integration.
- Standard I/O configuration for flexible control connections.
Key Features
- Danfoss iC7-Automation frequency converter series.
- 90 A rated output current.
- Three-phase 380-500 V AC input supply.
- IP21 / UL Type 1 protection rating.
- Frame size FK07.
- 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.
Reliable Motor Control for Industrial Automation
Frequency converters such as the Danfoss 137L3666 regulate motor speed by controlling the voltage and frequency supplied to the motor. This improves process control, reduces mechanical stress and helps optimise energy use in variable-speed motor applications.
The iC7-Automation platform is designed for modern industrial control systems where connectivity, safety and reliable performance are essential. With integrated I/O, Modbus TCP OS7MT, Ethernet connectivity and STO functionality, this drive is well suited to automated machines, industrial panels and process control applications.
Typical Applications
- Industrial conveyors and material handling systems.
- Pumps and pumping stations.
- Fans and ventilation equipment.
- Compressors and process air systems.
- Packaging and production machinery.
- Processing equipment and automation machinery.
- OEM machinery and machine building systems.
- Control panel and cabinet-mounted drive applications.
Technical Specifications
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| Power | 45 kW | |
|---|---|---|
| Current | 90 A | |
| Phase | Three Phase | |
| IP Rating | IP21 | |
| EMC Filter | Commercial | |
| Series | iC7-Automation | |
| Full model code | IC7-60FA3N05-90A0E21F2+ACBC+ALDC+BAMT+BDBA+BEF1+BF20+DAAU | |
| Catalog number | 7FC-AUFA3N05-90A0E21F2-000121952 | |
| Product type | Frequency converter | |
| Rated output current | 90 A | |
| Input voltage | 380-500 V AC | |
| Input phases | 3-phase | |
| Cooling method | Air-cooled | |
| Protection rating | IP21 / UL Type 1 | |
| Frame size | FK07 | |
| EMC category | C2 | |
| Control panel | 2.8 OPX20 | |
| Digital inputs | 4 x DI | |
| Digital I/O | 2 x DI/O | |
| Analogue inputs | 2 x AI | |
| Analogue outputs | 1 x AO | |
| Relay outputs | 2 x RO | |
| Fieldbus protocol | Modbus TCP OS7MT | |
| Other communication | Ethernet port, no protocol | |
| Functional safety | STO, not upgradable |
Frequently Asked Questions
What is the Danfoss 137L3666 used for?
The Danfoss 137L3666 is used to control the speed and torque of 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 90 A.
What supply voltage does the drive require?
The Danfoss 137L3666 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 137L3666 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.
