For continuous duty, the 320 A frame (In) with adjustable Ir from 224 A to 320 A lets you match the breaker to the actual cable or busbar rating, not oversize it. The Ii range of 5–10× In means the magnetic trip won't nuisance-trip on motor inrush but still clears a hard fault fast.

Siemens 3VA1332-4EF32-0AA0-ZD00 3VA1 IEC Frame 400, 36kA @ 4
Siemens 3VA1 IEC frame 400, breaking capacity class S, Icu=36kA @ 415V, 3-pole, line protection TM240 ATAM, In=320A, overload Ir=224-320A, short-circuit Ii=5-10xIn, nut keeper kit for DC Power OEM in China.
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Frequently asked questions
What are the key ratings for 3VA1332-4EF32-0AA0-ZD00?
It's a 3-pole IEC frame 400 breaker with 36 kA Icu at 415 V, TM240 ATAM trip unit, 320 A fixed rating, overload adjustable 224–320 A, and short-circuit pickup 5–10× In.
Where can I buy 3VA1332-4EF32-0AA0-ZD00?
This part is sourced to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment.