What this 160 A MCCB does for a motor circuit
The Siemens SENTRON 3VA2216-5MQ32-0AC0 is a 3-pole molded case circuit breaker rated 160 A across the full ambient temperature range from 40 °C to 70 °C — no derating needed as the panel warms up, which simplifies panel layout when grouping breakers. The interrupting rating at 415 V is 121 kA, which gives solid headroom for high-fault installations common in industrial distribution. At 240 V it handles 187 kA, and at 500 V still holds 75.6 kA — only at 690 V does it drop to 4.5 kA, so keep that in mind if feeding a 690 V motor directly.
Many breakers derate above 40 °C, but this one doesn't, so you can pack it tighter in a warm enclosure without losing capacity. The adjustable thermal-magnetic trip range starts at 32 A and goes to 160 A full scale, so it covers a wide motor FLA band. The trip indicator is not present on this variant, so plan for a separate status indication if you need visual trip feedback at the breaker face.