What the 15 kA Icu means for panel coordination
The 5SY4602-7CV is a 3-pole-plus-neutral miniature circuit breaker rated for a 15 kA interrupting capacity at 400 V AC. That Icu figure — the maximum fault current it can safely interrupt without welding contacts or rupturing the case — puts it in the high-breaking-capacity tier for a DIN-rail MCB. In a distribution board fed by a transformer sized for 630 kVA or larger, fault levels at the main sub-distribution can hit 10–12 kA; this breaker holds headroom above that, so you don't need an upstream current-limiting fuse just to protect the downstream MCB.
C-curve and 2 A rating — what it protects
The C2 trip characteristic means the magnetic release operates at 5–10× rated current (10–20 A), so it tolerates the inrush of small contactor coils, control transformers, or lighting ballasts without nuisance tripping, while still clearing a hard short. At 2 A per pole, this is sized for control circuits, signaling loads, or instrumentation supplies — not motor feeders. On a 24 VDC control bus drawing 1.5 A steady, the C2 holds fine; on a 0.75 kW motor, the inrush would push past the magnetic threshold on every start.
Lifecycle and supply posture
The lifecycle stage is listed as current, meaning Siemens has not issued a phase-out or last-time-buy notice on this order code. For a shutdown planner or MRO buyer, that reduces the urgency to stockpile — the part is still in the catalog and factory-supported. We source it against an RFQ through independent distribution channels; availability and current pricing are confirmed at quote time, not on a public shelf.
DIN-rail fit and panel integration
Standard 35 mm DIN-rail mount, 4 modules wide (72 mm at 18 mm per pole). The 3P+N format takes the neutral through a switched pole, not a solid bar — verify that your downstream neutral bar is bonded correctly if used in a TN-S system where the neutral must remain solid. Spring-cage terminals accept 0.75–25 mm² copper; torque to 2.5 Nm per the terminal marking.