The Siemens 3VA1120-6ED32-0AA0-ZD00 is a 3-pole IEC frame 160 molded-case circuit breaker with a breaking capacity class H rating of 70kA at 415V. That class-H rating means it clears fault currents up to 70kA without rupturing — critical for high-fault installations like transformer secondaries or large motor control centers where available fault current exceeds standard 36kA or 50kA breakers. It carries TM210 line protection: thermal-magnetic trip with a fixed Ir of 20A (overload) and a fixed short-circuit pickup Ii of 16 x In (320A instantaneous). The fixed Ir means no adjustment dial — the overload protection is locked at 20A, so the breaker is sized for a continuous load at or below 16A (per NEC 80% rule for continuous loads) or 20A for non-continuous. The 16x In magnetic pickup suits motor starting inrush or transformer energization without nuisance tripping. This specific order code includes a nut keeper kit and is configured for a DC Power OEM in China — the nut keeper prevents fastener loosening under vibration in transport or in the panel, a detail that matters if the breaker is shipped as part of a pre-wired assembly.
Mounts in a standard IEC frame 160 footprint — occupies three pole spaces on a DIN rail or panel-mount base. The 3VA1 series accepts plug-in accessories (auxiliary contacts, shunt trips, undervoltage releases) that snap into the accessory slots without removing the breaker from the bus.