The Siemens SENTRON 3VA1116-6EF36-0DC0 is a 3-pole molded case circuit breaker rated 160 A continuous at 40 °C, holding that rating through 50 °C before a gradual derate to 150 A at 70 °C. At 440 V it still interrupts 75.6 kA; above that, 17 kA at 500 V and 690 V.
Footprint is 76.2 mm wide by 130 mm tall by 70 mm deep — three standard 25 mm module widths on a DIN rail. Max power loss is 40.5 W, so account for that heat inside the enclosure when stacking breakers side-by-side; the derating curve above 50 °C already assumes free air convection, so forced ventilation or wider spacing may be needed if ambient in the panel runs hot.