The Siemens SENTRON 3VA2116-5HN36-0DC0 is a 3-pole molded case circuit breaker rated for line protection, carrying 160 A continuous current (Iu) through the full 40–50 °C ambient window — no derating needed until you cross 55 °C, where it steps down to 154 A, then 148 A at 60 °C, 142 A at 65 °C, and 136 A at 70 °C. That thermal curve means a panel pulling a steady 150 A in a 45 °C enclosure stays within rating; only a hot backplane or undersized ventilation pushes you into the derate band. Breaking capacity hits 187 kA at 240 V, 121 kA at 415 V and 440 V, 79 kA at 500 V, and 4.25 kA at 690 V.
The depth of 86 mm means it clears most shallow backpanels; check gland-plate clearance if you're mounting against a rear wall. The 20 000 mechanical endurance cycles (latching) suit it for panel feeder duty rather than frequent switching applications. The storage range matters for site trailers or unheated warehouses before commissioning.