MVRNX Series "Next Gen" Medium Voltage Soft Starters
Ratings from 2300V - 4160V up to 3000HP
Reliable MV Technology, Future Ready
Benshaw’s MVRNX Series medium voltage soft start delivers advanced processor speed, motor protection, monitoring and communication capabilities. An easy-to-use, door-mounted HMI operator is included. The HMI displays waveforms and data sampling … ideal for ‘must run’, critical motor applications including pumping systems, compressors, conveyors and more!
Next level NX technology takes motor control into the future delivering all the functionality and rugged, dependable performance that you’ve come to expect from a Benshaw product, while allowing wireless connectivity, seamless troubleshooting, advanced monitoring, and even more configurable options.
The NX controller comes standard with cyber secured Bluetooth capabilities allowing you to seamless and safely connect to your equipment through a phone app to shorten commissioning times and improve troubleshooting. The NX controller has been designed to meet global standards and is RoHS compliant.
The PLC type architecture of the controller allows for options to be easily integrated into the system, and the upgraded HMI shows wave forms and data sampling to quickly troubleshoot any issues to get the system back up and running.

Features & Options
Standard Features
- Expandable system
- Built-in connectivity
- Easy to understand interface
- Versatile starting / stopping options
- Customizable motor protection
- Selectable motor control modes
- Commissioning / troubleshooting tools
- Cybersecurity
- Optional expansion modules
Configurable Options
- Seismic ratings
- Arc resistant design
- Communication options
Ingenious Design
- Bluetooth® connectivity (via iPhone/Android apps)
- RNX controller can handle two motors, each with separate parameters and overload protection
- USB port for downloading waveform capture data
- Designed to meet global standards (RoHS compliant)
- Easy-to-use HMI operator & display
- Advanced monitoring & protection
- Standard & heavy duty ratings
- Horizontal bus options up to 2000A
- Stand-alone units or lineups
Next Gen (NX) Control Features

Benshaw’s MVRNX Series medium voltage soft start introduces a true generational change in processor speed, motor protection, monitoring and communication capabilities. An easy-to-use, door-mounted HMI operator is included. The HMI displays waveforms and data sampling . . . ideal for ‘must run’, critical motor applications including pumping systems, compressors, conveyors and more!
Expandable system
- HMI with full-color display (panel-mount)
- DIN rail-mounted control modules
- Additional DIN rail-mounted modules (can be connected via CAN bus to expand the system and provide additional features)
Built-in connectivity
- Bluetooth Low Energy (BLE) wireless connection to mobile app
- Built-in Modbus RTU
- 6 x digital inputs
- 4 x relay outputs
- Analog output with digital offset and span adjustment
- USB-A socket
- CAN bus-based expansion to other modules
Easy to understand interface
- Plain text menus and displays
- Color-coded status bar
- Informative on-screen metering
Real-time clock - Programmable metering
- Resettable run time and power consumption metering
- Multi-language menus and display
Passcode protection
Motor control modes
- Genius ATL - injection test compatible
- Genius Wye/Delta
- Power loss ride-through
Commissioning/troubleshooting tools
- Extensive trip and event logging
- Versatile trip actions
- High-speed waveform capture during start, stop and faults
- Self-test and run simulation mode
Customizable protection
- Motor overload (thermal model)
- Undercurrent/Overcurrent
- Underpower/Overpower
- Undervoltage/Overvoltage
- Current imbalance
- Stalled motor protection (Excess start time /UTS)
- Line frequency
- Phase sequence
- Phase loss (single phasing)
- Power factor leading/lagging
- Residual or zero-sequence ground fault protection
- Backspin/restart timer
- Starts per hour
- Time between starts
- Power outage ride-through
Cybersecurity
- PIN number protection
- Digitally signed firmware
- Secure Bluetooth pairing
Optional expansion modules
- 8 or 16 RTD inputs, with overload biasing
- Ethernet/IP
- CAN bus isolation
- Profinet
- Profibus









