The 10 kA breaking capacity at 400 V AC (per EN 60898) tells you it can safely interrupt a fault current up to that level; for UL 1077 / CSA C22.2 No.235 applications the rating is 5 kA. The 3-pole design switches all three phases simultaneously, with no neutral conductor switching — standard for a 3-phase load feed. The 76 mm depth and 54 mm width (3 MW) mean it fits standard 18 mm-per-module DIN-rail enclosures. The quick assembly system and any mounting position give flexibility in tight cabinets — no derating needed for horizontal or inverted orientation.
Siemens 5SY4306-7CC SENTRON MCB, C-Curve 3P 400V 10kA
MPN5SY4306-7CC
Siemens SENTRON 5SY4306-7CC, 3-pole miniature circuit breaker, C-curve, 400 V AC, 10 kA per EN 60898, 3 MW units.
Source DocumentedChannel stated on listing & quote
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Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| Parameter | Value |
|---|---|
| Overvoltage category | III |
| Parameter | Value |
|---|---|
| Width | 54 mm |
| Height | 90 mm |
| Depth | 76 mm |
Product details
Frequently asked questions
Where can I buy 5SY4306-7CC and how do I get a price?
Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
Will 5SY4306-7CC drop into a panel specified around 5SY4140-7 without rewiring?
Both are 3-pole SENTRON MCBs on a 3 MW DIN-rail footprint, so the mechanical fit is the same. The 5SY4140-7 is a higher-current variant (40 A vs 6 A for this part); verify the load rating before swapping — the physical drop-in is fine, but the protection curve must match the circuit.
What compliance documentation does this brand provide for 5SY4306-7CC?
The part carries approvals per EN 60898, UL 1077, and CSA C22.2 No.235. It is halogen-free and silicon-free. RoHS and REACH compliance documentation is standard with Siemens SENTRON series breakers.
MPN
5SY4306-7CC