How it compares
The closest functional peer is the LV432658, which shares the same 400 A rating and accuracy but uses 4 poles instead of 3. A panel wired for the 3-pole LV432657 cannot accept the 4-pole LV432658 without rewiring the neutral or phase pass-through.
Lifecycle and sourcing
Schneider lists the LV432657 as discontinued. There is no official successor order code in the evidence; sourcing now runs through surplus and broker channels. An RFQ confirms available quantity and lead time for the exact 3-pole 400 A build.