The Siemens 5SY4504-7CV is a miniature circuit breaker (MCB) with a C4 tripping characteristic, rated for 4 A. It breaks fault currents up to 15 kA at 230/400 V, which means it can safely interrupt high-energy short-circuits on a 400 V three-phase supply without welding its contacts or cascading the fault upstream — a critical spec for panel builders coordinating selectivity with upstream breakers.
Siemens 5SY4504-7CV MCB, Icu=15kA 230/400V 1P+N C4
MPN5SY4504-7CV
Siemens 5SY4504-7CV, MCB, Icu=15kA 230/400V, 1P+N, C4 curve.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Product details
Frequently asked questions
What is the breaking capacity of the 5SY4504-7CV?
The 5SY4504-7CV has an Icu of 15 kA at 230/400 V, which is its rated ultimate short-circuit breaking capacity. This means it can safely clear a fault up to 15,000 amps without damage, making it suitable for high-fault-capacity industrial panels.
Where can I buy the 5SY4504-7CV?
The 5SY4504-7CV is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment.
MPN
5SY4504-7CV