The Siemens 3VA1163-6EF32-0AA0-ZD00 is a 3-pole IEC frame 160 molded case circuit breaker in the 3VA1 series, rated for breaking capacity class H with an Icu of 70 kA at 415 VAC. It carries a TM240 thermal-magnetic trip unit with ATAM (adjustable thermal, adjustable magnetic) — overload protection Ir adjustable from 44 A to 63 A, and short-circuit protection Ii adjustable from 5 to 10 times In (315 A to 630 A at the 63 A rating). The suffix ZD00 adds a nut keeper kit for DC Power OEM applications in China.
What the ratings mean for fit
The 70 kA Icu at 415 V places this breaker in breaking capacity class H — it can safely interrupt fault currents up to that level without upstream cascading, suitable for high-fault installations like industrial substations or large motor control centers. The TM240 ATAM trip unit gives the panel builder independent adjustment of thermal (Ir) and magnetic (Ii) thresholds, so the same breaker can be tuned to different cable or load protection profiles without swapping the trip unit. The 63 A In with Ir range 44–63 A covers motor feeder or distribution branch circuits in the 45–60 A range, common for 22–30 kW motor loads at 400 V.
Integration note
Mounts in a standard IEC frame 160 panel cutout or DIN-rail adapter. The nut keeper kit (ZD00 suffix) is specific to DC Power OEM builds in China — verify the gland plate and busbar drilling pattern matches your enclosure before specifying. Spring-cage or box lug terminals accept 16–70 mm² conductors; torque to the values on the nameplate label.