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Data sheet:

USB Isolator 2kV Hi-Speed

Galvanic isolation for USB devices

The High-Speed W&T USB Isolator model #33003 galvanically isolates USB 2.0 connections from the USB host to protect the USB interface and connected devices. All USB 2.0 speeds (Low, Full and High Speed) are supported. The negotiated bus speed is automatically detected.

The Isolator works fully transparently and requires no additional drivers.



  • 1 x USB socket, type A
  • 1 x USB male, Type A
  • Galvanic isolation between the ports
    • Isolation voltage min. 2kV DC

Management and connectivity:

  • Full USB 2.0 support (Low, Full and High Speed up to 480 Mbps)
  • Automatic bus speed detection
  • Solution integrated into USB cable for plug-in

Power supply:

  • External supply voltage for the downstream side
    • enables connection of power-hungry USB devices

Standards & more

  • Conforms to standards both in office and industrial environments:
    • High noise resistance per EN 61000-6-2
    • Low noise emission per EN 55032:2015 + A1 Cl. B, EN 61000-3-2 & EN 61000-3-3
  • 5 year guarantee

Worth knowing

USB interface:

USB interfaces in stationary computers unfortunately have the basic drawback of having no galvanic isolation for the signal lines.

In many applications in the consumer world this limitation is irrelevant, since the USB devices connected to the PC are generally supplied through the bus and do not have any reference to a second ground or to the ground conductor.

In the areas of measurement reading, process control or for example medical technology, galvanic isolation of the connected devices is mandatory in order to prevent ground loops on the USB line.

For this purpose W&T offers a family of USB isolators that differ in their mechanical configuration, the supported speed as well as power requirement and degree of isolation voltage.

Technical data

Connections and displays:

  • USB port:
    • 1x Type A male
    • 1x Type A female
  • USB speed:
    • Automatic detection of
    • Low Speed (1.5 Mbps)
    • Full Speed (12 Mbps)
    • High Speed (480 Mbps)
  • Galvanic isolation:
    • Isolation voltage min. 2kV DC
  • Supply voltage:
    • +5V DC
  • Current consumption:
    • depending on the connected device:
      • - Idle: typ. 20 mA
      • - Low Speed: typ. 20 mA
      • - Full Speed: typ. 20 mA
      • - High Speed: typ. 100 mA
      • plus device power up to max. 900 mA
  • Supply connection:
    • USB Type C - socket
  • Indicators:
    • 1x LED Power IN
    • 1x LED Power OUT

Housing and other data:

  • Housing:
    • Plastic small housing
    • 55 x 31 x 16 mm (L x W x H)
  • Enclosure rating:
    • IP20
  • Weight:
    • approx. 35 g
  • Ambient temperature:
    • Isolator:
    • Storage: -40..+70 °C
    • Operating: 0..+70 °C

    • Power supply:
    • Storage: -40..+70 °C
    • Operating: 0..+40 °C
  • Permissible relative humidity:
    • 5..90% relative humidity, non-condensing
  • Scope of delivery:
    • USB Isolator 2 kV
    • USB power supply 5V / 1.0 A (only with Euro plug)
    • Manual

* Our offering is intended only for commercial users. We will be happy to refer private end customers to trading partners through whom our products can be purchased.