The Siemens 5SY4263-7CV is a 2-pole miniature circuit breaker (MCB) with a C-trip curve, rated 63 A. Its interrupting capacity is 15 kA at 400 V AC — the Icu value that governs fault clearing in a 400 V three-phase panel.
Siemens 5SY4263-7CV MCB, 63A C-Curve 2P 15kA 400V
MPN5SY4263-7CV
Siemens 5SY4263-7CV, MCB Icu=15kA 400V 2P C63.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Product details
Frequently asked questions
What is 5SY4263-7CV's rated breaking capacity?
It is rated Icu = 15 kA at 400 V AC, 2-pole, C-curve, 63 A.
Where can I buy 5SY4263-7CV?
This part is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time.
MPN
5SY4263-7CV