The Siemens 3VA2510-6KQ32-0AJ0 is a 3-pole IEC frame 1000 circuit breaker in the 3VA2 series, rated for line protection with an ETU860 electronic trip unit providing LSIG protection (long-time, short-time, instantaneous, ground fault). The continuous current rating In=1000A with adjustable overload protection Ir from 400A to 1000A gives you flexibility to match the exact load cable or busbar rating without swapping the breaker frame. The short-circuit protection settings are Isd=0.6..10x In and Ii=1.5..10x In, allowing fine-tuning of magnetic pickup to avoid nuisance trips on motor inrush while still clearing hard faults. Ground-fault protection is adjustable Ig=0.2...1 x In with time delay tg=0.05-0.8s, and neutral conductor protection can be added via an external current transformer up to 160% of In. This makes the breaker suitable for solidly-grounded or resistance-grounded systems where ground-fault coordination is required by code.
The ETU860 trip unit is field-replaceable and communicates via the breaker's internal bus for remote monitoring when paired with a communication module.