What the ratings mean for fit
The Siemens 3VA1116-4ED42-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated 160 A continuous at 40 °C, with a TM210 thermal-magnetic release — meaning the thermal element is fixed at 160 A, not adjustable. The 4-pole design handles three-phase plus neutral or switched neutral in distribution panels. Interrupting capacity is 121 kA at 240 V AC and 75.6 kA at 415 V AC, so it stands up to high-fault utility feeds without cascading upstream breakers. At 690 V the rating drops to 11.9 kA; that still covers most industrial motor branch circuits.
Thermal derating and panel integration
The 160 A rating holds flat from 40 °C to 50 °C, then derates to 150 A at 70 °C (–). That matters when the breaker sits in a warm enclosure near other heat sources — you don't lose headroom until well above typical ambient. Dimensions are 101.6 mm wide by 130 mm tall by 70 mm deep (–), a compact footprint for a 4-pole 160 A frame. Front IP40 means tools or fingers won't contact live parts, but the unit is not sealed against washdown; keep it inside a panel.