B&R 0AC808.9-1
8-port industrial hub (layer 2), 24 VDC, 10/100 Mbit/s with autonegotiation, automatic MDIX, order terminal block TB704 separately!
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IAC stocks legacy spares and exchange units and quotes upgrade paths. Send us the nameplate details and we will confirm a compatible replacement.
Technical specifications
General information
| Diagnostics / Bus function | Yes, using LED status indicator |
| Diagnostics / Hub power supply | Yes, using LED status indicator |
| LED name / Network activity | RX (orange) |
| LED name / Link/Collision | L/C (Link = Green, Collision = Red) |
| LED name / Supply voltage | OK (orange) |
| Certifications / CE | Yes |
| Certifications / CRA (Cyber Resilience Act) | In preparation |
| Certifications / UL | cULus E115267 Industrial control equipment |
| Certifications / LR | ENV1 |
| Status indicators | Network activity for each channel, link/collision for each channel, supply voltage |
| Type | 8-port industrial hub (layer 2) |
Interfaces
| Transfer / Physical layer | 10BASE-T/100BASE-TX |
| Transfer / Half-duplex | Yes |
| Transfer / Full-duplex | No |
| Transfer / Autonegotiation | Yes |
| Transfer / Auto-MDI/MDIX | Yes |
| Signal | Ethernet |
| Variant | Shielded RJ45 |
| Line length | Max. 100 m between 2 stations (segment length) |
| Transfer rate | 10/100 Mbit/s |
| Hub propagation delay | 0.64 to 0.68 µs |
Power supply unit
| Input voltage range | 18 to 30 VDC |
| Current consumption | Max. 150 mA |
| Power consumption | Max. 3 W |
| Variant | Switched-mode power supply with reverse polarity protection diode, no overvoltage protection |
Electrical properties
| Electrical isolation | Ports isolated from each other, ground and power supply. Power supply and ground isolated. |
Operating conditions
| Mounting orientation / Face-up | Yes |
| Mounting orientation / Vertical | Yes |
| Installation elevation above sea level | Max. 2000 m |
| Degree of protection per EN 60529 | IP20 |
Ambient conditions
| Temperature / Operation / Face-up | -25 to 60°C |
| Temperature / Operation / Vertical | -25 to 60°C |
| Temperature / Storage | -40 to 85°C |
| Temperature / Transport | -40 to 85°C |
| Relative humidity / Operation | 5 to 95%, non-condensing |
| Relative humidity / Storage | 5 to 95%, non-condensing |
| Relative humidity / Transport | 5 to 95%, non-condensing |
Mechanical properties
| Dimensions / Width | 115 mm |
| Dimensions / Height | 43 mm (51 mm with top-hat rail) |
| Dimensions / Depth | 86 mm |
| Note | Order 1x terminal block TB704 separately. |
| Installation | Top-hat rail installation, top-hat rail adapter is included in delivery. |
Documentation & CAD
Files hosted by B&R Industrial Automation; links open the official download page.
Datasheets
3D CAD models
ECAD / EPLAN
Get a quote for a replacement
Industrial Automation Co. stocks, sources, and repairs B&R parts — new, refurbished, or exchange units with warranty.
Specifications from the official B&R product catalog. Always confirm against the datasheet for your exact revision.