Access I/O USB-ISOLATOR Features 4kV Isolation &Industrial Temperature Operation


  • Tru-Iso signal isolation up to 4kV meets EN60601 standards
  • Upstream host port isolated from the downstream port
  • Advanced EFT, Lightning, and ESD protection at ±20kV on all signal pins (air and contact)
  • Full-speed USB 2.0 device, USB 3.1 and 1.1 compatible
  • Rugged, industrial grade (-40°C to +85°C) operation
  • Downstream port capable of low-speed (1.5 Mbps) and full-speed (12 Mbps) transfers aggregate
  • LED status indicator for power from upstream port
  • Compact, low profile enclosure, provision for DIN-rail mounting
  • Industrial grade USB connectors feature high-retention design
  • Max working isolation is 863 Volts peak (Viorm)
  • Embedded miniature USB headers in parallel with type B and type A USB connectors (both upstream and downstream)
  • RoHS standard
  • Designed, made, supported, and manufactured in the USA

For further information, please click “Add to Enquiry” or call us on +44 (0) 1785 879050 (UK).



This product utilizes a high-performance, low-power USB 2.0 isolator with an operating temperature rated for industrial grade environments. Being able to operate at industrial grade temperatures, the USB-ISOLATOR offers its functionality to a wider range of user applications that many competitors’ isolators can’t provide.

Careful attention has been paid to isolation design, including extensive keep-out zones and hand-routed circuit paths, as well as component and material selection. Robust EFT, Lightning, and ESD protection at ±20kV on all signal pins (air and contact). See the Isolation specification in user manual for full details.

Our Tru-Iso™ products are designed under IPC-2221B, UL1577, and UL60950-1. The circuit is isolated with a ≥ 300mil gap between all signal and plane layers (upstream to downstream port). These gaps are rated under IPC-2221B at 1500V (upstream to downstream).

Our circuit uses a chip-level high-frequency DC-DC isolator which is rated at 5000Vrms for 1 minute under UL 1577. This isolation component has an over 50 year isolation lifespan even if the isolation voltage potential is in excess of 846 volts AC. Under UL60590-1 the card design meets or exceeds the DC-DC isolator specification.

The USB-ISOLATOR has an LED that indicates the presence of power from the upstream port. It can be powered from the USB upstream host port providing up to 380mA of isolated power to the downstream port. External power can be used if the downstream port needs more current with our optional medical grade external isolated supply. The USB-ISOLATOR uses a smart switch DC jack to automatically switch between upstream power or external power upon insertion of the power supply plug.

The USB-ISOLATOR is designed to be used in rugged industrial environments but is small enough to fit nicely onto any desk or testing station. The module’s enclosure is 2.5″ x 3.5″ x 1″.


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Bus Type: USB 2.0 Full/Low-speedUSB 3.1 CompatibleUSB 1.1 Compatible
Operating Temperature Range: -40°C to +85°C
Storage Temperature Range: -40°C to +85°C
Humidity: 5% – 95%, non-condensing
Board Dimension: 2.350 x 2.381 inches
Enclosure Dimension: 2.5 x 2.5 x 1 inches2.5 x 3.5 x 1 inches with mounts
Weight: 284.2 grams (in enclosure)56.2 grams (-OEM version)
External Power Supply 0°C to 40°C (4kV isolation)
Power Required: No external power required, 6mA min, up to 500mA from host when self-powered depending on downstream load
Downstream: 380mA available when self-powered
External Power: If external power supply is used, available downstream current is limited by external supply capacity
ESD Protection: ±20kV on all signal pins (IEC 61000-4-2 Level 4)
Tru-Iso: IPC-2221B, UL60590-1, UL1577 (4000V isolation meets EN60601)
Up-to Downstream: 1500V peak (AC or DC)
Max Transient Isolation: 4000V rms
Max Work Isolation: 863V peak
Certification: This product is designed to be in full compliance with CE requirements.

Delivery Information

Orders placed by EMEA customers will be delivered by DHL.

Payment Methods & Options

Accepted payment options for EMEA customers include VISA, Mastercard or bank transfer in GBP.

Warranty & Service Information for ACCES I/O Products (EMEA)

All ACCES I/O products distributed in the EMEA come with a 2 year warranty as standard, with additional extension options available upon request. As an official ACCES I/O partner, we are proud to provide customers with peace of mind and the highest quality products, including any systems which have been configured to meet individual specifications.

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