The Siemens 5SY4520-7CV is a miniature circuit breaker (MCB) with a C20 trip curve, rated for a breaking capacity (Icu) of 15 kA at 230/400 V in a 1P+N configuration — one protected pole plus a switched neutral. That 15 kA interrupting rating means this breaker can safely clear a fault current up to 15,000 A without welding its contacts or rupturing the housing, which is the figure that governs coordination with upstream protective devices in a panel schedule.
Siemens 5SY4520-7CV MCB, 1P+N C20, 15kA Icu
MPN5SY4520-7CV
Siemens 5SY4520-7CV MCB, 1P+N, C20, Icu 15 kA at 230/400 V, current lifecycle stage.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Product details
Frequently asked questions
What is 5SY4520-7CV's listed description?
The description is MCB Icu=15KA 230/400V 1P+N C20: a miniature circuit breaker with a 15 kA breaking capacity at 230/400 V, 1 pole plus neutral, C20 trip curve.
Where can I buy 5SY4520-7CV?
This part is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time.
MPN
5SY4520-7CV