What this 3VA1 frame 160 MCCB carries
It's rated for 63 A continuous with fixed thermal-magnetic protection (TM210) and a fixed short-circuit pickup of 10 x In. The breaking capacity hits 55 kA Icu at 415 V — class M, meaning it's sized for industrial distribution where fault currents are substantial, not just commercial light-duty panels.
The 63 A continuous rating (Ir fixed at 63 A) and fixed Ii of 10 x In (630 A magnetic pickup) mean this breaker is a straight swap for a feeder or branch circuit where you need a defined, non-adjustable thermal-magnetic curve. The nut keeper kit is a small but real time-saver on the panel build — keeps hardware captive during assembly.
Deployment context
This breaker is a DIN-rail or panel-mount unit for industrial switchboards, typically feeding motor control centers or distribution sub-panels in OEM equipment built for the Chinese DC Power market. The 4-pole configuration suits 3-phase + N systems common in that segment.