The 3VA1332-6EF32-0AA0-ZD00 is a 3-pole IEC frame 400 circuit breaker with class H breaking capacity — 70 kA at 415 V. In a petrochemical plant or large industrial switchboard, that headroom lets you coordinate downstream feeders without oversizing the main breaker. The TM240 thermal-magnetic trip unit provides adjustable overload protection: Ir from 224 A to 320 A, set via a dial on the front. For a 320 A continuous load on a 400 V distribution bus, this breaker is sized right for the main feeder or a large motor control center.
Where it fits — panel and system integration
The nut keeper kit for DC Power OEM in China is included, so it ships ready for bolted busbar connections in a DC distribution section. For an OEM building a 400 VAC or 250 VDC switchboard, the 3-pole form factor fits a 3-phase feeder or a two-pole DC circuit with the third pole unused.