ABB AX521

XC = eXtreme Conditions
Extreme conditions
Terminal bases for use in extreme ambient conditions have no sign for
XC version.
The figure 3 in the Part no. 1SAP3... (label) identifies the XC version.
31.1 Assembly
31.2 Disassembly
XC Version
TB56xx-2ETH
Disassembly
2019/11/15 3ADR024117M02xx, 11, en_US 235