The Siemens 3VA1132-6GE42-0AA0-ZD00 is a 4-pole IEC frame 160 molded case circuit breaker from the 3VA1 series, with a 70kA breaking capacity at 415V — class H means it handles high prospective fault current without upstream cascading. The TM220 thermal-magnetic trip unit is fixed at 32A continuous (Ir adjustable 22A to 32A), with instantaneous pickup set at 10x In. This variant includes a nut keeper kit and is configured for DC Power OEM applications in China.
What the ratings mean for fit
The 70kA Icu at 415V is the maximum short-circuit current the breaker can safely interrupt once — critical for panels fed from a transformer with high fault current. The TM220 thermal-magnetic curve gives long-time and instantaneous protection; the 10x Ii multiplier means the magnetic trip fires at 320A, so it will hold motor inrush but clear a hard short fast. The 4-pole configuration with 100% N conductor protection means the neutral is switched and protected at full phase rating, required for some IT or corner-grounded delta systems. The nut keeper kit is a mechanical accessory for secure mounting in the DC Power OEM panel.
Deployment context
This breaker is sized for a panelboard or enclosure — the IEC frame 160 footprint fits standard Siemens 3VA1 mounting accessories and busbar systems. The 4-pole form factor suits three-phase plus neutral applications typical in industrial distribution, especially where the neutral must be switched and protected at full rating. The DC Power OEM designation suggests it is built into a DC power supply or rectifier cabinet, where the nut keeper kit ensures the breaker stays torqued under vibration.