The Siemens 5SJ3125-6RC is a 1-pole miniature circuit breaker from the 5SJ Retail line, rated 25 A with a B tripping characteristic and a 4.5 kA breaking capacity. The 4.5 kA breaking capacity covers most residential and light commercial fault levels; if your installation requires higher SCCR (e.g., 6 kA or 10 kA per IEC 60947-2), this unit stays within its rated limit and coordinates with an upstream fuse or larger breaker.
Siemens 5SJ3125-6RC MCB, 1P 25A B-Curve 4.5kA
MPN5SJ3125-6RC
Siemens 5SJ3125-6RC MCB, 1-pole, 25 A, B characteristic, 4.5 kA breaking capacity, Retail line.
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 5SJ3125-6RC?
The 5SJ3125-6RC has a breaking capacity of 4.5 kA, which is typical for the Retail line and covers standard residential and light commercial fault levels.
Where can I buy the 5SJ3125-6RC?
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
MPN
5SJ3125-6RC