ABB AC500 V3 Hardware Manual page 982

System assembly, construction and connection
AC500 (Standard) > Mounting and demounting
3.
Mounting with If the terminal base should be mounted with screws, wall mounting accessories TA526
Ä Chapter 2.6.5.5 "TA526 - Wall mounting accessory" on page 1018 must be inserted at the
screws
rear side first. These plastic parts prevent bending of the terminal base while screwing on.
TB560x and TB561x need one TA526, TB562x, TB564x and TB566x need two TA526.
Fig. 187: Terminal bases, Fastening with screws
Fig. 188: Function module terminal bases, Fastening with screws
982
The demounting is carried out in a reversed order.
By wall mounting, the terminal base is grounded through the screws. It is neces-
sary that
– the screws have a conductive surface (e.g. steel zinc-plated or brass nickel-
plated)
– the mounting plate is grounded
– the screws have a good electrical contact to the mounting plate
3ADR010278, 3, en_US 2022/01/31