What It Is & What the Ratings Mean
The Siemens 3VA1110-4ED32-0AA0-ZD00 is a 3-pole IEC frame 160 molded-case circuit breaker from the 3VA1 series, built for line protection with a TM210 thermal-magnetic trip unit. Overload protection is fixed at Ir = 100 A, and short-circuit protection is fixed at Ii = 10 x In (1000 A). No adjustment dials — set-and-forget for a dedicated load. The nut keeper kit (ZD00 suffix) is a factory-fit option for DC Power OEM builds in China, securing the breaker in high-vibration DC switchgear. The 3VA1 frame is a standard panel-mount design; it occupies the same cutout as other 160-frame breakers, so retrofitting into an existing 3VA or older 3VL lineup is straightforward.
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Integration & Panel Fit
Mounts into a standard IEC 160-frame panel cutout. The nut keeper kit (ZD00) is pre-installed — no loose hardware to lose during assembly. Terminals accept copper or aluminum conductors up to the frame's rated cross-section; torque values are marked on the case. The fixed thermal-magnetic trip means no field calibration required. Just torque the line and load lugs, confirm the bus bar alignment, and close the cover. The breaker ships with the handle in the OFF position.