Stäubli contact socket BL3N
The Stäubli contact socket BL3N with part number 02.0002 is a contact bushing with external thread M8x0.75. It is used when a contact needs to be screwed into a contact block system or a busbar with a through-hole. In practice, it is a mechanical and electrical connection part that is included in the construction of a safe contact connection.
Internally, it is designed with MULTILAM lamella type LAIII. This is the part that provides the actual contact surface and makes the connection suitable for professional current conduction. For this size, an extraction force of 8 N and an insertion force of 10 N are specified, so that a clear, firm connection is obtained during assembly.
During assembly, it is important to adhere to the tightening torque of 2.5 Nm. This is also stated in the manufacturer's assembly instructions MA021. Here, Stäubli describes how the bushing should be correctly mounted and which tools should be used. These are precisely the details that matter in daily installation and maintenance, where you want a stable connection without overloading the components.
The BL3N is rated for 40 A at 80 °C and 55 A at 150 °C. The contact resistance is stated to be 200 µΩ, and the short-circuit values are 0.6 kA for 1 s and 0.65 kA for 3 s. The rated peak short-circuit current is 3 kA. The weight is 0.005 kg.