| CATALOG NUMBER | 3-4918-309A |
| Manufacturer | Eaton Moeller |
| Product Name | Eaton DG1 variable frequency drive |
| Catalog Number | 3-4918-309A |
| Model Code | DG1-35650FN-C00C |
| EAN | 4015081941988 |
| Product Length/Depth | 561 mm |
| Product Height | 980 mm |
| Product Width | 1037 mm |
| Product Weight | 410 kg |
| Certifications | Specification for general requirements: IEC/EN 61800-2 |
1. Product Name
Eaton DG1-35650FN-C00C Variable Frequency Drive – Model 3-4918-309A
2. Product Overview
The Eaton DG1-35650FN-C00C (Catalog Number: 3-4918-309A) is a high-performance, industrial-grade variable frequency drive designed for large-scale motor control in demanding applications. It operates from a 600 V AC three-phase power supply, delivers a continuous output current of 590 A, and supports motor ratings up to 400 kW (approximately 536 HP). As part of Eaton’s advanced DG1 series, this drive features an IP00 (open-frame) enclosure, integrated DC link choke, and compliance with international quality and environmental standards including RoHS and ISO 9001. With substantial dimensions (937 mm W × 880 mm H × 561 mm D) and a weight of approximately 330 kg, it is engineered for integration into custom-engineered drive cabinets or motor control centers where thermal management, reliability, and precise torque control are paramount.
3. Product Description
The Eaton DG1-35650FN-C00C represents a sophisticated solution for controlling high-power industrial motors in continuous-duty environments such as water treatment, mining, oil & gas, power generation, and heavy manufacturing. Rated for 600 V three-phase input, this drive provides 590 A of continuous output current, enabling smooth, efficient, and responsive control of 400 kW (536 HP) three-phase induction or synchronous motors commonly used in large pumps, compressors, fans, extruders, and material handling systems.
Designed with an IP00 open-frame architecture, the drive is intended for installation inside dedicated, ventilated enclosures or motor control centers (MCCs). This design maximizes heat dissipation by allowing direct airflow over critical components—essential for maintaining performance under sustained full-load operation in high-ambient-temperature industrial settings. The absence of a sealed housing also facilitates easier inspection, maintenance, and integration with external cooling solutions such as forced-air or liquid-cooling systems.
A defining feature of this model is its integrated DC link choke, which plays a crucial role in improving power quality. By smoothing the DC bus current, the choke significantly reduces harmonic distortion on the AC line side—typically lowering total harmonic distortion (THD) to below 30% without additional filters. This not only enhances system stability but also helps facilities comply with IEEE 519 power quality guidelines, reducing stress on transformers, switchgear, and other connected equipment.
The drive employs advanced vector control technology, supporting both sensorless and encoder-based closed-loop operation. This enables exceptional low-speed torque performance (often exceeding 150% of rated torque at 1 Hz) and rapid dynamic response—critical for applications requiring precise speed regulation, load sharing, or tension control. Whether accelerating a massive centrifugal pump or maintaining constant pressure in a multi-stage compressor train, the DG1-35650FN-C00C ensures stable, efficient operation across the entire speed range.
For seamless integration into modern automation infrastructures, the DG1 platform supports a wide array of industrial communication protocols via optional interface modules, including PROFIBUS, PROFINET, Modbus TCP, EtherNet/IP, and CANopen. This connectivity enables real-time data exchange with PLCs, SCADA systems, and enterprise-level energy management platforms, facilitating remote monitoring, predictive maintenance, and process optimization.
Standard I/O includes multiple programmable digital inputs, analog inputs/outputs (for speed reference or feedback), relay outputs for status signaling, and safety terminals compatible with Safe Torque Off (STO) functions—aligning with functional safety standards such as ISO 13849. These features enhance both operational flexibility and personnel safety during maintenance or emergency shutdowns.
Robust internal protection mechanisms safeguard against overcurrent, overvoltage, undervoltage, phase loss, ground faults, overheating, and short circuits. Combined with high-grade power semiconductors, oversized busbars, and thermally optimized layout, these protections ensure long service life and minimal unplanned downtime—even in electrically noisy or mechanically harsh environments.
Manufactured under ISO 9001-certified processes and compliant with RoHS directives, the drive reflects Eaton’s commitment to quality, sustainability, and global regulatory alignment. Backed by extensive engineering support and a worldwide service network, the DG1-35650FN-C00C delivers scalable, future-ready motor control for industries where performance, efficiency, and reliability are non-negotiable.
4. Product Advantages
The Eaton DG1-35650FN-C00C offers compelling advantages through its high power density, superior power quality, and intelligent control architecture. Its 400 kW / 590 A rating at 600 V makes it ideal for mid-to-large industrial processes that demand consistent, high-torque motor performance without compromise.
The integrated DC link choke is a significant differentiator—it reduces input current harmonics, stabilizes the DC bus voltage, and improves overall system efficiency. This built-in feature often eliminates the need for costly external harmonic filters, simplifying system design and reducing footprint in control rooms.
The IP00 open-frame construction, while requiring cabinet integration, provides unmatched thermal performance. Direct cooling of power electronics allows the drive to operate at full capacity even in ambient temperatures up to 50°C (with derating), ensuring reliability in tropical climates or enclosed plant areas with limited ventilation.
Advanced vector control enables precise torque and speed regulation, even at very low speeds—making the drive suitable for applications like hoists, extruders, or test stands where mechanical precision is critical. Optional encoder feedback further enhances positioning accuracy for synchronized multi-motor systems.
Comprehensive communication options transform the drive into a smart node within an IIoT ecosystem. Real-time access to parameters such as energy consumption, motor temperature estimates, and fault history supports data-driven maintenance strategies and operational optimization.
Safety is reinforced through configurable I/O and Safe Torque Off (STO) capability, enabling integration into safety circuits per ISO 13849 PLd/SIL2 requirements—without adding external contactors, thus reducing response time and component count.
Finally, as part of Eaton’s modular DG1 family, this drive benefits from standardized firmware, scalable accessories, and global parts availability—streamlining commissioning, training, and lifecycle support across multinational operations.
5. Application Scenarios
The Eaton DG1-35650FN-C00C is widely deployed in industries where reliable, energy-efficient control of 400 kW motors directly impacts productivity and operational cost. In municipal water and wastewater infrastructure, it drives large booster pumps, sludge recirculation systems, and aeration blowers—adjusting flow dynamically to match demand while avoiding water hammer and reducing electricity use by up to 40% compared to fixed-speed alternatives.
In oil & gas processing, the drive controls glycol dehydration pumps, produced water injection systems, and gas compression skids. Its ability to maintain constant differential pressure despite fluctuating backpressure ensures process integrity and prevents equipment damage from surge or cavitation.
Within mining operations, it powers conveyor belts transporting ore over long distances, ventilation fans in underground tunnels, and mill discharge pumps. The robust electrical design withstands voltage sags, dust ingress (within the cabinet), and mechanical vibration—common challenges in remote extraction sites.
In district heating and cooling networks, the drive regulates primary and secondary circulation pumps in central plants, optimizing flow based on outdoor temperature or building load profiles. This contributes to lower pumping energy and improved thermal comfort across entire communities.
Additionally, in heavy manufacturing—such as pulp & paper machines, plastic extrusion lines, or cement kiln drives—the DG1 unit enables synchronized multi-axis control with accurate torque distribution, preventing web breaks, material jams, or uneven product quality.
From desalination facilities to chemical processing plants, the Eaton DG1-35650FN-C00C delivers the power, intelligence, and durability required to keep critical industrial systems running efficiently, safely, and sustainably—making it a cornerstone of modern electromechanical automation at scale.
