160 A MCCB with ETU350 — panel fit and interrupting duty
The Siemens SENTRON 3VA2116-7HN42-0AA0 is a 4-pole molded case circuit breaker rated 160 A continuous on a 1 600 A frame, with the ETU350 electronic trip unit governing the protection curve. The 1 600 A frame means the breaker body and bus connections are sized for that maximum — the 160 A rating comes from the trip unit and sensor, not the frame. That matters for panel fill: the physical footprint (86 mm deep, 140 mm wide, 181 mm tall) is the same whether you land a 160 A or a 1 600 A trip, so the enclosure cutout and bus spacing are fixed at the frame size. The interrupting ratings climb with voltage: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, then drops to 3.7 kA at 690 V. At 690 V the breaker is still rated for the full 160 A load but the available fault current must stay under 3.7 kA — a critical check for 690 V lineups.
Thermal derating and operating range
The 160 A rating holds flat across the full ambient range from 40 °C to 70 °C — no derating needed in a warm enclosure. Operating temperature spans -25 °C to 70 °C, storage from -40 °C to 80 °C. Max power loss is 25.5 W at rated load, which matters for heat rise in a sealed panel. Front IP40 protects against tool entry but not washdown; mount where incidental contact is the only exposure.
Lifecycle and sourcing
Current production — the lifecycle stage is listed as current, so this order code is the active catalog number, not a phase-out or NRND variant. No official successor exists because none is needed. For BOM freeze or line-down spares, the 3VA2116-7HN42-0AA0 is the part to specify. Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time.