The 6ES7590-5AA00-0AA0: This is the Siemens grounding screw for connecting the protective earth (PE) to the S7-1500 mounting rail. It's a mandatory item when using the 2000 mm mounting rail — without it, the rail isn't bonded to the panel ground.
Compliance and Packaging
RoHS compliant since 25-02-13; REACH lead content > 0,1 % (w/w). Packing box dimensions 13 x 11.1 x 7.5 cm.
