Danfoss 134N9363 VLT Soft Starter MCD50579BT5G4X00CV2 soft starter for controlled starting and stopping of industrial three-phase motors with 579 A operational current.
The Danfoss 134N9363, also identified as the MCD5-0525B-T7-G4X-00-CV2, is a heavy-duty VLT® Soft Starter MCD 500 designed to deliver intelligent starting, stopping and protection for large three-phase induction motors. As part of the advanced Danfoss MCD 500 series, it combines adaptive acceleration control, integrated motor protection and comprehensive diagnostics to maximise equipment reliability while reducing mechanical and electrical stress.
Engineered for demanding industrial applications, the MCD 500 series significantly reduces motor inrush current while protecting gearboxes, belts, pumps and driven equipment from excessive mechanical shock. Built-in bypass technology, programmable motor protection and intelligent monitoring help minimise downtime and reduce maintenance costs across a wide range of industries.
With a 525 A rated current, three-phase 380-690 V AC supply and an integrated bypass contactor, the Danfoss 134N9363 is ideally suited for high-power conveyors, pumps, compressors, crushers, fans and process machinery operating in demanding industrial environments.
Soft starters gradually increase the voltage supplied to a motor during start-up, reducing current surges and limiting mechanical shock. This improves system reliability, extends equipment life and lowers maintenance costs for motors and driven machinery operating in demanding industrial environments. The Danfoss VLT® Soft Starter MCD 500 range is trusted worldwide for reliable motor protection and intelligent soft starting.
With programmable control functions, integrated bypass technology and advanced diagnostics, the MCD 500 series integrates seamlessly into industrial automation systems across manufacturing, mining, utilities and process industries.
| Current | 525 A |
|---|---|
| Voltage | 110 V |
| Phase | Three Phase |
| IP Rating | IP00 |
| Series | VLT® Soft Starter MCD 500 |
| Part number | 134N9363 |
| Product type | Soft starter |
| Rated current | 579 A |
| Input voltage | 200–525 V AC |
| Input phases | 3-phase |
| Control voltage | 110 VAC / 220 VAC |
| Frequency | 50 / 60 Hz |
| Protection rating | IP00 |
| Mounting type | Panel mounting |
| Frame size | G4 / Frame size 4 |
| Dimensions (H × W × D) | approx. 470 × 325 × 265 mm |
| Net weight | approx. 19 kg |
| Duty rating | AC53a heavy-duty operation |
The Danfoss 134N9363 provides controlled starting and stopping of large three-phase induction motors while reducing electrical inrush current and mechanical stress.
The Danfoss 134N9363 has a 525 A rated operational current.
The unit operates from a three-phase 380-690 V AC supply.
Yes. The MCD5-0525B-T7-G4X-00-CV2 includes an integrated bypass contactor that improves efficiency and reduces heat generation during normal operation.
It is typically installed inside industrial electrical control panels for heavy-duty motor control and automation applications.
Danfoss VLT® Soft Starter MCD 500 units are trusted worldwide for delivering intelligent motor protection, reliable soft starting and dependable long-term performance 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...