Breaker identity and key ratings
The ABB 1SDA068100R1 is an XT4N 160 molded case circuit breaker rated for 80 A continuous (In) on a 160 A frame (Iu), with a TMA thermal-magnetic trip unit and four poles. The rated voltage is 690 V at 50/60 Hz.
Mounting follows the standard XT4 pattern; verify that the panel cutout and busbar spacing accommodate the 4-pole width before committing the BOM line.
No pin-compatible drop-in alternative exists that matches both the 80 A In and 160 A Iu in a 4-pole fixed version.