Beckhoff Automation GmbH & Co. KG
BK3120 | PROFIBUS bus coupler; network protocol: PROFIBUS; number of Bus Terminals: 64 (255 with K-bus extension); max. number of bytes fieldbus: 128 byte input and 128 byte output
Manufacturer part number: BK3120ESYS SKU: BK3120
Net unit price, VAT 0%
€237.60
VAT 25.5% and delivery are shown separately in the request summary.
Current availability
Current available stock: 0 pcs
- Minimum order
- 1 pcs
- Order increment
- 1 pcs
- Availability checked
- 1 Sept 2026, 08:40
Beckhoff Automation GmbH & Co. KG BK3120 is a PROFIBUS bus coupler. Key selection facts are network protocol: PROFIBUS; number of Bus Terminals: 64 (255 with K-bus extension); max. number of bytes fieldbus: 128 byte input and 128 byte output.
Direct ordering is unavailable for this item.
Send the part number and quantity to ESYS for availability or compatibility confirmation.
Information for product selection
Typical applications
- Use BK3120 in the documented equipment configuration when the design calls for network protocol: PROFIBUS.
- Choose BK3120 for the documented equipment configuration that must provide number of Bus Terminals: 64 (255 with K-bus extension).
- Before ordering BK3120, verify max. number of bytes fieldbus: 128 byte input and 128 byte output against the the documented equipment configuration design.
Key specifications
- Product type
- PROFIBUS bus coupler
- Number of Bus Terminals
- 64 (255 with K-bus extension)
- Max. number of bytes fieldbus
- 128 byte input and 128 byte output
- Transmission rate
- automatic detection up to 12 Mbaud
- Bus interface
- 1 x D-sub 9-pin socket with shielding
- Transmission medium
- shielded copper cable, 2 x 0.25 mm²
Show additional verified specifications
- Power supply
- 24 V DC (-15%/+20%)
- Input current
- 70 mA + (total K-bus current)/4, 500 mA max
- Current supply K-bus
- 1750 mA
- Network protocol
- PROFIBUS
- Power contacts
- max. 24 V DC/max. 10 A
- System family
- PROFIBUS Economy plus Bus Coupler
Lifecycle
- Status
- Active
Compatibility and related parts
PROFIBUS system
System: Documented manufacturer system or product-family context; does not imply interchangeability with every member
