USB Isolators

These compact, industrial-grade isolators provide high-voltage USB isolation to protect computers and instruments from electrical surges, spikes, and noise.

It also eliminates ground loop currents flowing between the PC and peripherals which can cause damage and inaccurate measurements.


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USB Isolators

Acromag USB Isolators are compact with industrial grade strength.  They provide a high-voltage isolation barrier between a computer and a connected USB device.

USB Isolators

Firstly, the isolation protects equipment from electrical surges and transient voltage spikes.

Secondly, it also eliminates ground loop currents flowing between the PC and peripherals.  Which can cause damage and inaccurate measurements.

Thirdly, isolation minimises conducted noise from static discharge, magnetic fields, and radio frequency interference.

Acromag’s USB isolator is very easy to use. The isolator inserts in-line with the USB connection and operates transparently. No special software drivers are required. The unit receives power from the PC’s USB port and isolates that power to the connected device. High noise immunity and low radiated emissions ensure reliable data transfer in sensitive applications.


Features & Benefits


  • Isolates and protects a USB peripheral from a USB host
  • Electrical isolation up to 1500V AC / 2100V DC
  • Also common mode filtering on all data lines
  • Built-in surge/transient suppression up to 8kV on all ports
  • Plus it is self-powered through the USB port
  • Supports USB 2.0 full speed (12 Mbps) and USB 1.1 low speed (1.5 Mbps) data rates with jumper-selection
  • LED for power indication and diagnostics
  • Reset button to reinitialise and re-enumerate peripheral devices
  • Output short circuit protection with auto-retry
  • No software or configuration required (transparent operation)
  • Uses standard high-retention USB Type A/B cable connections (includes 1m cable)
  • Compact size and rugged design for harsh environments
  • Wide ambient temperature operation, -40 to 70°C
  • CE, FCC, UL/cUL approvals


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