
Ramcro R1217 (Equivalent to YE00820)
B3 C1221 KNX/EIB Cable
The B3 C1221 KNX/EIB Cable is engineered for reliable communication in intelligent building automation systems based on the KNX (European Installation Bus) protocol. Designed to deliver stable and interference-free signal transmission, it is ideal for connecting controllers, sensors, actuators, lighting systems, HVAC equipment, and other KNX-enabled devices.
Specification | Details |
Product Name | B3 C1221 KNX/EIB Cable |
Brand | B3 International |
Cable Type | KNX / European Installation Bus Cable |
Part Number | C1221 |
Number of Cores | 2 Cores |
Configuration | Pair |
Conductor Material | Solid Bare Copper |
Conductor Diameter | 0.80 mm |
Insulation | Polyethylene (PE) |
Screen | 100% Aluminium/Polyester Foil |
Drain Wire | 0.4 mm Tinned Copper |
Sheath Material | PVC |
Sheath Colour | Green (RAL 6018) |
Overall Diameter | Approx. 5.5 mm |
Operating Voltage | 300 V |
Operating Temperature | -25°C to +75°C |
Standard Length | 305 m / 500 m |
Standards | EN 50290-2, IEC 60332-1, RoHS |

