Danfoss 134N9349 VLT Soft Starter MCD50331BT5G3X00CV2 soft starter for controlled starting and stopping of industrial three-phase motors with 331 A operational current.
The Danfoss 134N9349 is a high-performance VLT® AutomationDrive frequency converter designed to deliver accurate speed and torque control for three-phase AC motors in demanding industrial environments. As part of the advanced Danfoss VLT® AutomationDrive series, it combines exceptional reliability, energy efficiency and flexible integration into modern automation systems. The AutomationDrive platform is engineered for continuous industrial operation and supports both induction and permanent magnet motors.
Built for OEM machine builders and industrial process applications, the VLT® AutomationDrive offers intelligent motor control, integrated diagnostics and a modular architecture that simplifies commissioning and maintenance. Its advanced thermal management and back-channel cooling technology help maximise uptime while reducing operating costs.
The Danfoss 134N9349 is ideally suited for variable speed control of pumps, fans, conveyors, compressors, mixers and production machinery. Its compact panel-mounted design enables straightforward installation inside industrial electrical control cabinets while providing dependable long-term performance.
Variable frequency drives regulate motor speed by adjusting output voltage and frequency, allowing machinery to operate more efficiently while improving process accuracy and reducing energy consumption. The Danfoss VLT® AutomationDrive series is recognised worldwide for its robust construction, intelligent diagnostics and suitability for demanding industrial applications.
With flexible communication capabilities and advanced monitoring functions, the AutomationDrive integrates seamlessly into modern manufacturing facilities, material handling systems and process industries, helping improve productivity and minimise downtime.
| Current | 331 A |
|---|---|
| Voltage | 110 V |
| Phase | Three Phase |
| IP Rating | IP00 |
| Series | VLT® Soft Starter MCD 500 |
| Part number | 134N9349 |
| Product type | Soft starter |
| Rated current | 331 A |
| Duty rating | AC53a 3-30:50-6 |
| Input voltage | 200–525 V AC |
| Input phases | 3-phase |
| Control voltage | 110 VAC / 220 VAC |
| Protection rating | IP00 |
| Mounting type | Panel mounting |
| Frame size | G3 / Frame 3 |
| Gross weight | approx. 32 kg |
| Net weight | approx. 30.2 kg |
| EAN | 5710107953547 |
The Danfoss 134N9349 provides variable speed control for three-phase AC motors used in industrial automation and process applications.
It is an industrial AC variable frequency drive from the Danfoss VLT® AutomationDrive range.
The drive is compatible with both standard induction motors and permanent magnet motors, depending on the application.
Yes. By matching motor speed to process requirements, the drive helps reduce electrical energy consumption while maintaining optimum performance.
It is commonly installed inside industrial electrical control panels serving manufacturing, process control and automation systems.
Danfoss VLT® AutomationDrive frequency converters are trusted worldwide for dependable motor control, outstanding energy efficiency and long-term reliability across demanding industrial applications.
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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...