2-pole C-curve MCB, 3 A, 230 V, 6 kA — line-down spare fit
The 5SL6203-7YA: It lives in the 5SL6 series — Siemens' standard DIN-rail MCB family for building and light industrial distribution boards. The 6 kA interrupting rating at 230 V covers most sub-distribution fault levels in residential and commercial panels.
Active production — current lifecycle status
For a panel builder or MRO planner, that means the 5SL6203-7YA is a standard stock item through Siemens distribution. No need to chase surplus or worry about last-time-buy windows.