USA Tech Products
Standard VFD Pump Controller with Bypass
This versatile control panel provides seamless operation of a single pump with the flexibility to select between VFD Mode or full Bypass Mode, ensuring uninterrupted performance even during VFD maintenance or failure.
Key Features
- Operator-selectable VFD or Bypass operation via a clearly labeled switch
- Bypass Mode: Integrated across-the-line motor starter delivers direct full-voltage power for reliable emergency or maintenance operation
- VFD Mode: Clean power output terminals provided for connection to a customer-supplied external variable frequency drive
- Dual run-status indicator lights clearly show the active mode (VFD Running or Bypass Running)
- Motor-running dry contact (normally open) closes whenever the motor is operating in either mode — ideal for chemical controller interlocks, heaters, or UV systems
- Remote start input terminals allow external push-button, chemical controller, or timer operation
Built with heavy-duty components in a NEMA 4X non-metallic enclosure, this panel combines the energy-saving benefits of VFD control with the peace-of-mind reliability of true critical bypass. It is well suited for commercial pools, spas, fountains, and water-feature applications where downtime is not an option.
Simple installation, intuitive operation, and proven field reliability.
UL Listed 508A Control panel. UL/Nema 4X Rated

