The USB Isolator 2 kV Hi-Speed from Wiesemann & Theis effectively protects USB connections against equalizing currents and electromagnetic interference. Supporting all USB 2.0 speeds (Low-Speed, Full-Speed, and High-Speed up to 480 Mbit/s) and featuring an isolation voltage of at least 2 kV DC, the device meets the highest requirements in professional applications such as data acquisition, control technology, and medical engineering.

Thanks to its transparent operation and automatic speed detection, the isolator is ready for use immediately—without additional drivers or complex configuration. The integrated cable design makes installation especially compact and straightforward.

Galvanic isolation for maximum safety

In critical applications such as medical, measurement, or control systems, even a small equalizing current can cause significant interference or malfunctions. The USB Isolator 2 kV provides galvanic isolation between the USB host and the connected device, preventing any mutual interference.

This prevents:

• Loss or distortion of sensitive measurement data
• Malfunctions in control systems due to electrical interference
• Risk to users when connecting USB devices in medical equipment

The high isolation voltage of 2 kV DC provides robust protection even under harsh operating conditions.

Full support for all USB 2.0 speeds

The isolator supports the following USB 2.0 modes:

• Low-Speed – 1.5 Mbit/s for simple devices (e.g. keyboards, mice)
• Full-Speed – 12 Mbit/s for standard peripherals
• High-Speed – 480 Mbit/s for data-intensive devices (storage, cameras)

Automatic detection of bus speed ensures that the isolator adapts seamlessly to different devices—without manual configuration.

Interfaces and compact cable design

A USB socket (Type A) on the downstream side connects to the USB device, while a USB plug (Type A) connects to the host. Isolation takes place between these two ports.

The in-cable design offers the following advantages:

• Compact construction without a separate housing
• Simple plug-in integration
• No additional cabling required

External power supply for high-consumption devices

For devices with high power requirements, the isolator provides an external power supply on the downstream side. It is connected via a screw terminal and relieves the host’s USB interface.

This function is particularly useful for:

• External hard drives
• Industrial sensors with additional features
• Measuring instruments with internal signal processing

Standards compliance and industrial robustness

The USB Isolator complies with international standards such as:

• EN 61000-6-2 – Immunity
• EN 55032:2015 + A1 Class B – Emissions
• EN 61000-3-2 / EN 61000-3-3 – Power line compatibility

CE and UL certifications confirm suitability for worldwide use. The robust design is intended for 24/7 continuous operation. The five-year warranty underscores the high quality and durability of the device.

Typical applications

• Data acquisition: Protection of precision sensors and data collection systems.
• Medical technology: Safe connection of diagnostic devices to PCs without electrical hazards.
• Control engineering: Interference-free communication between control devices and host systems.
• Laboratory automation: Reliable integration of USB-based measuring instruments.

Advantages of transparent operation

Support for all common operating systems (Windows, Linux, macOS) without driver installation makes the isolator particularly easy to integrate. The connection is immediately operational, and bus speed is automatically detected.

Compact protection for professional USB applications

The USB Isolator 2 kV Hi-Speed from Wiesemann & Theis combines galvanic isolation with full USB 2.0 performance, external power support, and a ready-to-use design. In sensitive areas such as medical engineering, industrial control, or high-precision data acquisition, it ensures safety, stability, and data integrity—in a compact, user-friendly in-cable form.