Integrator note — what the ratings mean for fit
The 3VA2163-5HN42-0BA0 is a 4-pole IEC frame 160 circuit breaker from the Siemens 3VA2 series, built for line protection with an ETU350 electronic trip unit. The Icu of 55 kA at 415 V AC puts it in breaking capacity class M — that is the maximum fault current it can safely interrupt once without needing replacement, so it fits panels where the prospective short-circuit current sits at or below that threshold. The In of 63 A is the continuous current rating; overload protection Ir is adjustable from 25 A to 63 A, and short-circuit protection Isd spans 1.5 to 10 times Ir, with instantaneous pickup Ii fixed at 12 x In. That adjustability lets you tune the breaker to the cable and load without swapping the frame. An undervoltage release (24 V DC) is integrated as an accessory — it trips the breaker when control voltage drops, standard for emergency-stop or undervoltage protection schemes in machine-tool and conveyor circuits. The N-conductor protection is adjustable (OFF or 100 %), handy for 4-wire systems where you want to monitor the neutral.
Panel integration and compliance
The 3VA2 frame 160 mounts on a DIN rail or can be screw-fixed to a backplate. The nut keeper kit (included per the description) simplifies panel wiring — no loose hardware to drop into a live cabinet. The 4-pole form factor occupies four module widths; plan your gland plate and fill factor accordingly. Compliance documentation for the 3VA2 series typically includes IEC 60947-2 (the governing standard for molded-case circuit breakers), plus CE marking for EU markets. RoHS and REACH declarations are standard from Siemens. Specific UL/CSA listings depend on the exact variant — verify the nameplate against your local code if the panel requires a UL 489 listing.