56A minimalist blade socket has three entry directions

Rutronik has announced a 56A rated minimalist PCB-mount socket range that accepts 4.8 x 8mm blade plugs from three different directions.

Rutronik Lumberg 4580 01 high current pcb contact

Made by Lumberg and with the base part number ‘4580 01’ it is “a solution for reliable power transmission and is suitable for operating from -40°C to +120°C”, according to Rutronik. “Certified according to LV 215 and VW 80332 standards, it meets all safety and quality requirements, particularly those demanded in high-voltage systems in the automotive industry.”

There are five parts: through-hole (TH), pure surface-mount (SMD) or SMD with a locating pin, for 0.5 or 0.8mm thick blades.


  • 4580 01 SP T0,5 – 0.5mm, TH
  • 4580 01 MP T0,5 – 0.5mm, SMD with
  • 4580 01 OP T0,5 – 0.5mm, SMD without
  • 4580 01 MP T0,8 – 0.8mm, SMD with
  • 4580 01 OP T0,8 – 0.8mm, SMD without

Rutronik Lumberg high current contact three entry directions

As well as being soldered to a PCB, the contacts can also be laser-welded to a bus bar or lead-frame.


Insertion force is ~30N from the top or bottom, and ~18N from the side.

Contact resistance is <1 mΩ and the current rating vary up and down ” depending on the connection to the printed circuit board or busbar, the installation situation and heat dissipation”, according to Lumberg.

Expected life is five mating cycles.

Use is foreseen in electric vehicles, charging infrastructures and with industrial electric motors.

Older members of range have 4580 02 or 4580 03 part numbers, have double or triple the number of contact fingers, have lower contact resistance, higher current capability, but no side-entry option.

Find the 4580 01 OP T0,8 on this Rutronik web page

Steve Bush

Steve Bush is the long-standing technology editor for Electronics Weekly, covering electronics developments for more than 25 years. He has a particular interest in the Power and Embedded areas of the industry. He also writes for the Engineer In Wonderland blog, covering 3D printing, CNC machines and miscellaneous other engineering matters.

Leave a Reply

Your email address will not be published. Required fields are marked *

*