What this 3VA1 breaker carries
The Siemens 3VA1163-3ED32-0DH0 is a 3-pole IEC circuit breaker from the 3VA1 frame-160 series, rated 63 A with a fixed thermal-magnetic TM210 trip unit. The breaking capacity lands at 25 kA at 415 V AC — class N on the IEC scale, which covers most industrial distribution panels where the fault current at the main switchboard stays under that threshold. The overload protection Ir is fixed at 63 A, and the short-circuit pickup Ii is fixed at 10 x In (630 A). That means no adjustment dials on the trip unit; what you see on the nameplate is what the breaker does. The part ships with an undervoltage release rated 208–230 V AC 50/60 Hz, plus two auxiliary changeover switches and one trip alarm changeover switch. These are factory-fitted accessories inside the 3VA1 accessory slot — no field wiring guesswork for the UVR coil or the signal contacts. The nut keeper kit is also included, so the breaker lands on the busbars ready to torque.
Lifecycle and sourcing posture
For a BOM line that calls out the 3VA1163-3ED32-0DH0, the supply posture is straightforward: the part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
What the ratings mean for panel coordination
The 25 kA Icu at 415 V is the ultimate short-circuit breaking capacity — the breaker can interrupt a fault at that level once and still be usable afterward (though you'd replace it after a fault anyway in practice). The fixed Ii of 10 x In (630 A) means magnetic trips happen fast on hard shorts, but the breaker won't nuisance-trip on motor inrush if the motor FLA plus locked-rotor stays under 630 A. For a 63 A feeder feeding a group of smaller loads, that's usually fine; for a single large motor, check the starting curve against the TM210's time-delay band.
Integration notes for the panel builder
The 3VA1 frame-160 mounts on standard DIN rail or can be bolted to a mounting plate. The undervoltage release coil draws continuous power when the breaker is closed — if the control voltage drops below about 70 % of rated, the UVR trips the breaker open. That's by design for safety circuits (loss of control power = open breaker). The two auxiliary switches give you one N/O + one N/C changeover each; the trip alarm switch signals only on a fault trip, not on manual open. Wire the UVR ahead of the breaker's line side so it stays powered when the breaker is off.