The Schneider Electric DOM11338SNI is a Domae-series miniature circuit breaker (MCB) for distribution boards. Rated operational voltage is 380...415 V AC at 50 Hz, and the breaking capacity is 4500 A at 400 V AC per IEC 60898-1.
No official successor order code is listed in the lifecycle record. For a replacement, you would need to cross-reference by functional specs: 3-pole, 63 A, C-curve, 4.5 kA breaking capacity at 400 V AC, DIN-rail mount. The Domae family continues in production with current variants, but pin compatibility and footprint should be verified against your existing panel layout.
Clip-on mounting to DIN rail, 3-pole width at 9 mm per pitch (6 pitches total, so 54 mm wide). Toggle control, grey housing. Compatible with comb busbars and distribution blocks for daisy-chaining phases across multiple breakers in the same row.