What this breaker carries
The Siemens 3VA1225-6EE32-0AA0-ZD00 is a 3-pole IEC frame 250 molded case circuit breaker rated for line protection. Its headline number is the 70kA breaking capacity at 415 V — class H in the 3VA1 family — meaning it can safely interrupt a fault current up to that level without welding contacts or venting arc gas into the panel. That rating governs selectivity with downstream breakers: if your fault current at the panel main exceeds 70kA, this breaker is not the right frame. The TM220 thermal-magnetic trip unit gives adjustable overload protection (Ir) from 175 A to 250 A, and fixed short-circuit pickup at Ii = 10 x In.
Integration and mounting
Mounts in a standard distribution panel or motor control center on a DIN rail or bolted bus connection — the 3VA1 frame accepts plug-in or fixed versions depending on the base ordered. The nut keeper kit (part of this ZD00 suffix) is specified for DC Power OEM builds in China, which means the breaker ships with captive hardware to simplify panel assembly in that supply chain. Verify the lug kit and busbar adapter match your panel layout before committing the BOM.