B&R X20HB2881
Hub expansion module 2x Hub 100 BASE-FX The POWERLINK bus controller X20BC8083 and the stand-alone hubs X20HB8880 and X20HB8815 are equipped with a modular hub expansion. An additional 1 or 2 slots are available, depending on the bus base used. The X20HB2881 hub expansion module can be operated in these slots. Note that the hardware revision of the X20BC8083 and the X20HB8880 must be ≥F0. The hub expansion module is a 2x hub. The Ethernet connection is made using 62.5/125 μm or 50/125 µm fiber optic multimode cable with a duplex LC connection. The status of the module and network are indicated by LEDs.
Lifecycle & replacement
No manufacturer-published lifecycle data for B&R part numbers is indexed here yet. Ask IAC to check availability and an upgrade path.
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
Short description
| Hub | 2 Fast Ethernet interfaces for fiber optic cables for hub expansion |
General information
| Diagnostics / Module status | Yes, using LED status indicator |
| Diagnostics / Bus function | Yes, using LED status indicator |
| Certifications / CE | Yes |
| Certifications / UKCA | Yes |
| Certifications / CRA (Cyber Resilience Act) | In preparation |
| Certifications / ATEX | Zone 2, II 3G Ex nA nC IIA T5 Gc IP20, Ta (see X20 user's manual) FTZÚ 09 ATEX 0083X |
| Certifications / UL | cULus E115267 Industrial control equipment |
| Certifications / HazLoc | cCSAus 244665 Process control equipment for hazardous locations Class I, Division 2, Groups ABCD, T5 |
| Certifications / DNV | Temperature: B (0 to 55°C) Humidity: B (up to 100%) Vibration: B (4 g) EMC: B (bridge and open deck) |
| Certifications / CCS | Yes |
| Certifications / LR | ENV1 |
| Certifications / KR | Yes |
| Certifications / ABS | Yes |
| Certifications / BV | EC33B Temperature: 5 - 55°C Vibration: 4 g EMC: Bridge and open deck |
| Certifications / KC | Yes |
| Status indicators | Module status, bus function |
| Power consumption | 2.3 W (rev. <E0: 2.8 W) |
| Additional power dissipation caused by actuators (resistive) [W] | - |
Interfaces
| Transfer / Physical layer | 100BASE-FX |
| Transfer / Half-duplex | Yes |
| Transfer / Full-duplex | No |
| Transfer / Autonegotiation | No |
| Transfer / Auto-MDI/MDIX | No |
| Optical power budget / Glass fiber 62.5/125 µm, NA = 0.275 | 11 dB |
| Optical power budget / Glass fiber 50/125 µm, NA = 0.200 | 7.5 dB |
| Line length / Half-duplex | Max. 175 m between 2 stations (segment length) |
| Line length / POWERLINK | Max. 2 km between 2 stations (segment length) |
| Type | Hub expansion module |
| Variant | 2x female duplex LC |
| Transfer rate | 100 Mbit/s |
| Hub propagation delay | 0.96 to 1 µs |
| Wave length | Typ. 1300 nm Rx range: 1270 to 1380 nm Tx range: 1270 to 1380 nm |
| Cable fiber type | Multimode fiber with 62.5/125 µm or 50/125 µm core diameter On both sides: Male duplex LC connector |
Electrical properties
| Electrical isolation | Power supply isolated from Ethernet (IF1 and IF2) |
Operating conditions
| Mounting orientation / Horizontal | Yes |
| Mounting orientation / Vertical | Yes |
| Installation elevation above sea level / 0 to 2000 m | No limitation |
| Installation elevation above sea level / >2000 m | Reduction of ambient temperature by 0.5°C per 100 m |
| Degree of protection per EN 60529 | IP20 |
Ambient conditions
| Temperature / Operation / Horizontal mounting orientation (with 1 hub) | -25 to 55°C (Rev. <E0: 0 to 45°C) |
| Temperature / Operation / Horizontal mounting orientation (with ≥2 hubs) | -25 to 50°C (Rev. <E0: 0 to 40°C) |
| Temperature / Operation / Vertical mounting orientation (with 1 hub) | -25 to 40°C (Rev. <E0: 0 to 40°C) |
| Temperature / Operation / Vertical mounting orientation (with ≥2 hubs) | -25 to 35°C (Rev. <E0: 0 to 35°C) |
| Temperature / Derating | - |
| 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
| Slot | Hub expansion for X20BC8083 and X20HB8880 |
Documentation & CAD
Files hosted by B&R Industrial Automation; links open the official download page.
Datasheets
Manuals
ECAD / EPLAN
Certificates
- 2226379 CSA Certificate of Compliance X20 X67
- 64331_A1 BV Certificate of Compliance X20
- 64331_A1 BV Certificate of Compliance X20(de)
- ABS Certificate of Product Design Assessment - X20 IO Series
- CCS Type Approval Certificate - X20
- E115267 UL Certificate of Compliance X20
- EU Data Act - X20 IO - Connected Product Information Notice
- EU Declaration ATEX X20
- EU Declaration of conformity PLC X20
- FTZU 09 ATEX 0083X
- KR Type Approval Certificate MIL39390-AC003 (X20 System)
- Lloyds Register (X20 only)
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.