Siemens SENTRON 5SY4350-8FA miniature circuit breaker, 3-pole, D tripping characteristic, 50 A rated current, 10 kA breaking capacity at 400 V AC, 3 width units.
| Parameter | Value |
|---|---|
| Overvoltage category | III |
| Parameter | Value |
|---|---|
| Width | 54 mm |
| Height | 90 mm |
| Depth | 76 mm |
The 10 kA breaking capacity (per EN 60898) tells you it can safely interrupt a fault current up to 10,000 A at 400 V without welding its contacts or cascading damage upstream. That's standard for most industrial panelboards but worth verifying against your available fault current.
The sealable design and touch-protection feature (finger-safe terminals) matter for panels that require a lockable isolator or meet VDE 0106 touch-safety requirements.
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
The 5SY3132-6 is a 3-pole D-curve MCB but at a lower current rating — 32 A vs 50 A. It shares the same 10 kA breaking capacity and DIN-rail footprint, so it can drop into the same panel without rewiring, but only if the load current is within 32 A.
Alternative models and sibling configurations in the same Siemens series. For obsolete or discontinued parts, these models can serve as compatible replacements or functional alternatives for plant maintenance.
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