The Siemens 5SY4420-7CV is a 4-pole miniature circuit breaker rated C20 (20 A trip threshold) with a rated ultimate breaking capacity Icu of 15 kA at 400 V AC. The C20 curve means the magnetic trip operates at 5 to 10 times rated current (100–200 A), suited for moderate inrush loads like lighting banks or small motor circuits. Thermal bimetal protection handles sustained overloads below that threshold.
Siemens 5SY4420-7CV MCB, 15 kA Icu 400V, 4P C20
MPN5SY4420-7CV
Siemens 5SY4420-7CV, miniature circuit breaker, Icu=15 kA at 400 V, 4-pole, C20 characteristic.
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 5SY4420-7CV?
The rated ultimate breaking capacity Icu is 15 kA at 400 V AC, 4-pole configuration with a C20 trip curve.
Where can I buy the 5SY4420-7CV and get a price?
The 5SY4420-7CV is available to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial response.
MPN
5SY4420-7CV