USB Isolators

UHR401 & UHR402

Features and Benefits

  • 4 kV Isolation
  • High Retention USB Connectors
  • ESD Protection – 15 kV Air
  • Heavy Duty Case – Panel Mount with DIN Rail Adapters
  • Wide Operating Temperature (-40 to 80°C)
  • USB 2.0 – Full Speed
  • One and Two Port Version

The UHR401 and UHR402 are One and Two Port Ruggedized Isolators. They are designed and tested to meet heavy industrial EMC standards. High retention USB connectors hold standard USB cables tight and are perfect for high vibration applications – requiring up to 3.2 lbs-force to disconnect them. They have 4 kV Isolation between the upstream and downstream USB ports to protect expensive equipment from dangerous ground loops and to help ensure data integrity. They are also suitable for integration into medical applications requiring 60601-1 certification.

The Heavy Industrial EMC specifications allow these isolators to operate in unfriendly electrical environments – such as near variable frequency drives, motor control centers, welding, and other large electrical loads.

They are powered from an external 10 to 30 VDC power supply unit. The product comes with an international power supply that has US, EU, and UK blades. There are also power options with a locking barrel plug that can be purchased separately – refer to the ordering information.

The downstream port(s) provides up to 500 mA of power to connected USB devices.

Remember B&B Electronics when it comes to USB applications in harsh electrical environments.

Ordering Information
1 Port Rugged USB Isolator
2 Port Rugged USB Isolator
Wall Power Supply, 12 VDC US, EU, UK Blades (Included)
Stripped and Tinned Power connector for use with industrial power supply.Locking Barrel Connector.Sold Separately.
Power Supply 12VDC, Medical Grade US, EU, UK Blades, Locking Barrel Connector. Sold Separately
DIN Rail Adapter - Sold Separately

Choose from 2 speeds

The world’s most compact USB isolators

UH401 series isolators are USB bus powered and provide up to 100mA of current to attached downstream devices. LED indicates power supplied via upstream USB port.

These isolators comply with the USB 1.1 Standard and transfer data at 12Mbps or 1.5 Mbps depending on model of isolator. Standard USB cables of up to 5 meters may be used on either side.

Two speed options are available. Select a low speed isolator, Models UH401SL or UH401SL-2KV, if you are using a low speed device, such as a mouse or keyboard.

Use the full speed version, Models UH401 or UH401-2KV for full speed USB devices such as a scanner or test instrument.



  • Meets 60601-1 for medical applications
  • Up to 4 kV isolation, 8 kV contact, 15 kV air ESD
  • High retention USB connectors
  • Connectors: Type B-Upstream, Type A-Downstream
  • Ultra compact
  • Includes 1 meter USB cable
  • Operating temperature -40 to 80°C
  • USB bus powered


  • Strong enough for industrial, hospital, medical applications
  • Ensures high reliability and protects equipment
  • Solid connections that won’t pull lose easily (3.4lbs withdrawal force)
  • Easily fits in-line with existing applications
  • Easily fits into available space
  • No additional accessories required
  • Adaptable to a wide range of applications
  • No need for external power


  • Industrial
  • Medical
  • Lab
  • Point-of-Sale
  • In Vehicle
USB Speed
USB to USB 1-Port Isolator
4 kV
Full (12 Mbps)
USB to USB 1-Port Isolator
4 kV
Full (12 Mbps)
USB to USB 1-Port Isolator
2 kV
Low (1.5 Mbps)
USB to USB 1-Port Isolator
2 kV
Low (1.5 Mbps)