B&B USB 1-Port Isolator – 4KV UH401 Series

Introducing the B&B UH401 1-Port USB Isolator, a compact, in-line solution engineered to safeguard your valuable equipment from ground loops, electrical noise, and transient events that can compromise data integrity. Available in a 4 kV version (with a 2 kV option in the same UH401 family), this device sits between your USB host and peripheral to create a galvanic barrier that prevents harmful current paths from traveling through the USB cable. In environments ranging from factory floors and test benches to clinical labs and data-driven research setups, this isolator keeps communication clean, stable, and dependable.

Ground loops and EMI/RFI noise are common villains in modern electronics ecosystems. The UH401 series tackles these challenges by providing robust galvanic isolation while preserving USB signal quality. With up to 4 kV of isolation, the device protects both ends of the link—your controller, PC, or data logger on one side, and the USB peripheral on the other—from voltage differences, spikes, and leakage currents that can degrade measurements or cause intermittent disconnects. This is particularly valuable for equipment that shares power grounds with motors, servo controllers, medical instruments, or other instrumentation that introduces electrical noise into the USB path.

Designed for real-world use, the UH401 is purpose-built for reliability in demanding environments. Its compact, in-line form factor minimizes cable mess and makes retrofitting straightforward in space-constrained racks, benches, or field deployments. The high-retention USB connectors on both sides ensure a secure, vibration-resistant connection, so you don’t suffer from accidental disconnects during busy testing cycles or portable deployments. By keeping noise and ground potential differences at bay, this isolator supports more accurate data capture, consistent device operation, and longer equipment life.

Beyond protection, the UH401 emphasizes seamless compatibility and ease of use. It’s a plug-and-play accessory that does not require external power, drivers, or complicated setup. You simply connect the host USB port to the isolator input, attach your USB device to the isolator output, and you’re ready to operate. This straightforward approach makes the UH401 ideal for researchers, engineers, technicians, and IT professionals who need reliable USB isolation without added complexity. Its ability to support standard USB data rates means you won’t sacrifice performance for protection, ensuring fast data transfer and responsive peripherals in routine workflows and high-demand applications alike.

Whether you’re safeguarding a USB optical consul, a data acquisition module, a measurement instrument, or a medical device with stringent ground isolation requirements, the UH401 4 kV USB isolator delivers peace of mind. It’s engineered to work with a wide range of USB devices, from USB flash drives and HID peripherals to industrial sensors and field instruments. The combination of robust isolation, compact packaging, and dependable connectors makes it a versatile choice for labs, manufacturing lines, educational facilities, and research centers seeking to minimize risk and maximize data integrity in electrically noisy environments.

• In-line USB isolation for compact installation and minimal cable clutter
• 4 kV galvanic isolation (UH401 family also offers 2 kV versions for lighter duty)
• High-retention USB connectors on both ends for secure connections in vibration-prone setups
• Preserves USB signal quality with support for standard USB data rates (USB 2.0 up to 480 Mbps)
• Plug-and-play installation with no external power, drivers, or configuration required

Technical Details of B&B USB TO USB 1 PORT ISOLATOR - 4KV

• Isolation rating: 4 kV galvanic isolation between host and USB device; UH401 family also includes 2 kV variants for different protection levels
• Data interface: USB 2.0 compliant interface, supporting full-speed and high-speed operation up to 480 Mbps
• Port configuration: Inline, single-port USB isolator designed to sit between host and device cables
• Connectors: High-retention USB connectors on both sides to maintain secure connections in mobile or industrial environments
• Construction and compliance: Compact, rugged enclosure suitable for demanding workspaces; RoHS compliant
• Power and operation: Passive device requiring no external power supply; powered entirely by the USB bus
• Temperature and durability (typical): Built for standard laboratory and industrial conditions with stable operation in common ambient ranges

How to Install B&B USB to USB 1-Port Isolator

• Power down devices if possible, then locate a convenient section of your USB cable trail where the isolator can be inserted without bending the cables sharply
• Connect the USB host (for example, a computer or controller) to the isolator input connector
• Connect the USB peripheral (such as a data logger, instrument, or USB drive) to the isolator output connector
• Inspect both connections to confirm snug, secure seating in the high-retention connectors; avoid forcing connectors into misaligned ports
• Power on the host and peripheral; verify that the device enumerates normally and that data transfer occurs without interruptions or errors

Frequently Asked Questions

• What does the USB isolator protect against? It provides galvanic isolation to prevent ground loops, voltage transients, and electrical noise on the USB data path, reducing data corruption and equipment damage.
• What is the difference between the 4 kV and 2 kV versions? The UH401 family offers both 4 kV and 2 kV isolation ratings; the 4 kV version provides higher protection against voltage differences and transients, suitable for more demanding environments.
• Is external power required? No. The isolator is passive and draws power from the USB bus, simplifying installation and reducing cable requirements.
• What USB speeds are supported? The isolator supports USB 2.0 data rates, up to 480 Mbps, ensuring compatibility with a wide range of devices while preserving performance.
• Is the device RoHS compliant? Yes, the isolator adheres to RoHS standards, aligning with modern environmental and safety requirements.