The busbar to suit use to be 4BB4/12, however that part is no longer available. It has been replaced by the schneider model
21501.
| Description | Ratings |
| Rated operational current at 40°C (Ie) | 80 A |
| Rated conditional short-circuit current of an assembly (Isc) | Compatible with the breaking capacity of Schneider E lectric circuit breakers |
| Insulation voltage (U i) | 440 V |
| Rated voltage (U e) | 230 V (P4 + N) - 400 V (3Ph + N) |
| Rated impulse withstand voltage (U imp) | 6 kV |
| Degree of protection | IP20 |
| F ire resistance to IE C 69 5-2-1 | Self-ext inguishing 9 60°C 30 s |
| Colour | RAL 7035 |
| Number of 18 mm modules Comb busbar 1 | 12 |
