What this 3VA1 MCCB is and what it does
The Siemens SENTRON 3VA1180-3GD42-0AA0-ZD00 is a 4-pole molded case circuit breaker (MCCB) on the 3VA1 IEC frame, rated at 160 A frame size. It carries a breaking capacity class N with Icu = 25 kA at 415 V AC, meaning it can safely interrupt fault currents up to that level on a 415 V line without upstream cascading. The TM210 thermal-magnetic release is set at In = 80 A, with fixed overload protection Ir = 80 A and fixed short-circuit protection Ii = 10 × In (800 A). That fixed trip means no field adjustment — what you order is what you get, which simplifies BOM consistency but locks the protection curve.
Line protection with N-conductor coverage
This breaker is configured for line protection (LI characteristic — long-time and instantaneous) with 100 % N conductor protection. The fourth pole switches the neutral, and the 100 % rating means the neutral path is protected at the same ampacity as the phase conductors. That matters for panels feeding single-phase loads off a three-phase supply where neutral current can approach phase current. The fixed Ir = 80 A and Ii = 10 × In are factory-set; no dials to mis-calibrate on site.
DC Power OEM variant — what that means
The suffix ZD00 designates a DC Power OEM variant produced for the Chinese market. The breaker includes a nut keeper kit for DC power applications. While the AC breaking capacity is specified at 25 kA @ 415 V, the DC performance depends on the system voltage and configuration — the 3VA device manual covers the DC derating curves. If you are sourcing this for a DC bus or battery bank, verify the DC voltage and pole configuration against the manual before committing the BOM line.
Panel integration notes
This is a 4-pole MCCB on the 3VA1 frame. It uses lug terminals for the main current circuit, accepting conductor cross-sections from 12 × 0 mm up to 17 × 6.5 mm (width × thickness). Front-terminal arrangement keeps wiring accessible in a standard panel layout. The IP40 front protection means it is splash-resistant on the face but not sealed for washdown — mount inside a cabinet with a higher enclosure rating if the environment is wet or dusty.
How it compares to the 3-pole 3VA1010-2ED32-0JA0
The closest functional peer in the 3VA1 family is the 3VA1010-2ED32-0JA0, a 3-pole, 100 A frame MCCB with a TM210 release and shunt trip. The key difference for a panel swap: the 3VA1010 is three poles only, no neutral switching, and its Icu at 415 V is higher at 32 kA versus 25 kA on this 4-pole unit. Physically, the 3-pole variant is 76.2 mm wide; the 4-pole unit is wider to accommodate the fourth pole. It will not drop into a 3-pole panel cutout without a mounting adapter or rework of the bus bars.