The Siemens 3VA1116-4GD42-0AA0-ZD00 is a 4-pole IEC frame 160 circuit breaker from the 3VA1 series, built for line protection. It's rated at 160 A continuous (In=160A, Ir=160A fixed) and carries a 36 kA breaking capacity at 415 V (class S). That Icu figure means it can safely interrupt a fault current up to 36,000 amps without welding its contacts or blowing apart — critical for selectivity studies and SCCR compliance in a panel. The fixed thermal-magnetic trip (TM210) gives you short-circuit protection set at 10 x In (Ii = 10 x In), so it clears a hard fault fast while the thermal element handles overloads. It also includes 100% neutral conductor protection and a nut keeper kit, and this particular variant was configured for a DC Power OEM in China.
Mounts on a standard DIN rail in the enclosure — the 4-pole footprint takes up four module widths, so plan your gland plate and fill factor accordingly. The nut keeper kit is a nice touch for the OEM build: it keeps the terminal hardware from wandering off during assembly or field service. No special busbar or adapter needed for the 160 A frame, but watch your cable lug sizing — 160 A continuous calls for at least 70 mm² copper, and the breaker's terminals will accept that. For field service, the TM210 trip unit is fixed, so there's no dial to accidentally bump; what you see on the nameplate is what you get.