The Siemens 3VA1132-3EE32-0AA0-ZD00 is a 3-pole IEC molded-case circuit breaker on the 3VA1 frame, sized at 160 A frame rating with a 32 A thermal-magnetic trip unit (TM220, ATFM). The headline breaking capacity is 25 kA at 415 V — that is the Icu (ultimate short-circuit breaking capacity) under IEC 60947-2, meaning it can safely interrupt a fault current up to 25,000 A at that voltage without welding its contacts or rupturing the case. For a 415 V three-phase distribution panel feeding motor control centers or lighting sub-distribution, this is a standard class N breaker; it coordinates downstream with smaller branch breakers as long as the prospective fault current at its line side stays under 25 kA. Overload protection is adjustable via the TM220 thermal element: Ir is set between 22 A and 32 A, so the breaker can be fine-tuned to the continuous load current of the feeder. Short-circuit magnetic pickup is fixed at Ii = 10 x In (320 A), which is typical for a line-protection (non-motor) application — it will hold through moderate inrush but trip instantaneously on a hard fault. The nut keeper kit in the description indicates this variant includes hardware for DC Power OEM installations in China, likely for panel-mounting in solar or battery-energy-storage enclosures where vibration resistance matters.
Deployment context
The 3-pole, 160 A frame footprint is standard for panel-building; the nut keeper kit secures the breaker against mechanical shock in DC Power OEM applications. For a 415 V distribution board feeding inverter drives or UPS systems, the 25 kA Icu rating provides adequate fault-clearing headroom for most commercial and light-industrial installations.