Advantech B&B Electronics BB-UHR307 USB Hub Isolated

BB-UHR307 is Advantech B&B Electronics’ seven-port isolated USB 2.0 hub built for industrial environments. The upstream port is a single Type B female high-retention connector, while seven downstream Type A female high-retention ports supply USB connections for peripherals, with a 500 mA per-port downstream power budget. It delivers 4 kV isolation between upstream and downstream ports to guard against ground loops and electrical noise, backed by 8 kV contact and 15 kV air ESD protection and surge protection of ±0.5 kV DC on ports and ±1 kV signal ports. External power (10–30 VDC) is required to meet the total power demand (up to 30 W for the unit), with connections via a terminal block or locking barrel jack. The rugged metal enclosure is IP30-rated and supports DIN rail or panel mounting, measuring about 20.3 cm (8 in) x 12.1 cm (4.75 in) x 3.49 cm (1.38 in) and weighing around 0.64 kg (1.4 lb). It is UL Class 1 Division 2 listed, reflecting suitability for hazardous-location installations when used per its ratings, and features an MTBF of roughly 143,000 hours for reliable long-term operation. This hub is ideal for industrial PCs, PLCs, and remote I/O cabinets requiring isolated USB expansion and robust protection from ground loops, voltage transients, and EMI while delivering a compact, durable USB solution.