The Siemens SENTRON 3VA2116-6HN32-0AD0 is a 3-pole molded case circuit breaker (MCCB) rated for 160 A continuous current across its full operating temperature range of -25 °C to 70 °C — no derating needed from 40 °C through 70 °C, which simplifies panel design in warm enclosures. Its interrupting capacity hits 242 kA at 240 V AC and 187 kA at 415 V, so it handles high-fault utility feeds without cascading upstream — a solid choice for main or tie breakers in industrial switchboards. The unit is designed as a line-protection device (not motor or feeder protection), with three HQ auxiliary switches integrated and no undervoltage release, ground-fault monitoring, or communication function — keep that in mind when specifying for a coordinated distribution scheme.
Sizing and thermal performance
The 160 A rating holds flat from 40 °C to 70 °C ambient — unusual for an MCCB, where most frames start derating above 40 °C. That means you can run this breaker at full nameplate current inside a hot panel without recalculating the wire or coordination study. Rated insulation voltage is 800 V, and the maximum breaking capacity at 690 V is still 3.7 kA — enough for backup protection on a 690 V drive line, but not a primary fault interrupter at that voltage. Maximum power loss is 25.5 W — modest for a 160 A frame, so heat buildup in a multi-breaker lineup stays manageable without forced ventilation.
Physical fit and panel integration
Dimensions: 86 mm deep, 105 mm wide, 181 mm tall. That width is standard for a 3-pole 160 A MCCB — it drops into a typical panel cutout without surprises. The supplied basic switch is order code 3VA21166HN320AA0, and the auxiliary switch block is a 3-switch HQ configuration — one fewer than some full-accessory variants, but sufficient for status feedback on a main breaker. Storage temperature range is -40 °C to 80 °C, so it's fine for unheated warehouses or site containers before installation.