What this MCCB delivers on the line side
The Siemens SENTRON 3VA2216-8JQ42-0AA0 is a 4-pole molded case circuit breaker rated for 160 A continuous current, designed specifically for line protection in distribution panels. Its 800 V rated insulation voltage gives headroom for 690 VAC systems, and the ground-fault monitoring version uses summation current formation on L+N conductors — meaning it detects leakage without a separate GFCI module. Breaking capacity is the headline number here: 440 kA at 240 VAC, 330 kA at 415 V and 440 V, 220 kA at 500 V, and still 52.5 kA at 690 V. That SCCR range covers most industrial service-entrance and feeder applications without needing a current-limiting fuse upstream. Rated current holds flat at 160 A from 40 °C through 70 °C ambient — no derating curve to calculate for warm enclosures. The 19.7 W maximum power loss is manageable for a 160 A frame; plan for ventilation if packing multiple units in a sealed cabinet.
Panel fit and integration
Dimensions: 181 mm high, 140 mm wide, 86 mm deep — a standard 4-pole MCCB footprint. Communication function is built in, so this variant supports integration with higher-level monitoring without an external module. For panel builders wiring a BOM that calls out 3VA2216-8JP42-0AA0, the -8JQ42-0AA0 shares the same frame size and terminal layout — it swaps in without rewiring, just confirm the ground-fault logic matches your scheme.