The Siemens 3VA1116-3EF32-0DH0 is a 3-pole SENTRON molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 160 A at 40 °C and an interrupting capacity of 75.6 kA at 240 V AC. That 75.6 kA figure is the SCCR the breaker can safely clear under fault — critical for ensuring the downstream panel gear is coordinated and the arc flash incident energy stays within the equipment rating. At 415 V the interrupting rating drops to 52.5 kA, at 440 V to 32 kA, and at 500 V / 690 V to 11.9 kA, so the voltage you're switching governs the available fault current the breaker can handle.
Above that the breaker derates: 158 A at 55 °C, 155 A at 60 °C, 153 A at 65 °C, and 150 A at 70 °C. The maximum power loss is 40.5 W, which factors into enclosure thermal calculations.
Built-in undervoltage release and auxiliary switching
It also includes two auxiliary switches plus a separate trip alarm switch (HQ), giving status feedback for PLC or SCADA inputs without an external interposing relay.
That 76.2 mm width is three 25.4 mm pole spaces — standard for a 3-pole MCCB on DIN rail or direct-mount backplate.