The Siemens 3VM1125-3ED26-0AA2 is a 2-pole IEC frame 160 circuit breaker from the 3VM1 series, rated for line protection with a thermal-magnetic TM210 trip unit. The overload protection is fixed at Ir = 25 A (not adjustable), and the short-circuit pickup is set at Ii = 12.8 × In, which means it will hold through motor inrush and moderate transformer energization without nuisance tripping.
Deployment context
The terminal connection style matches the 3VM1 family footprint, so panel layouts using earlier 3VM1 breakers can swap this in without re-drilling the gland plate or re-routing busbars.