What this MCCB delivers
The Siemens 3VA2116-5HL32-0AJ0 is a SENTRON molded case circuit breaker (MCCB) rated for 160 A continuous current at up to 50 °C, with a slight derating curve above that — 154 A at 55 °C, 148 A at 60 °C, 142 A at 65 °C, and 136 A at 70 °C. That means in a warm panel you still have headroom; the 160 A rating holds through most standard enclosure ambient conditions. It carries a 187 kA interrupting rating at 240 V, 121 kA at 415 V and 440 V, 79 kA at 500 V, and 4.25 kA at 690 V. No voltage trigger, no undervoltage release, no phase-failure detection — this is a straight line-protection breaker, sized for feeder or main-switch duty in a 3-phase system.
Mount it inside a panel with a door; it is not rated for washdown environments. That gives you two independent status signals for your PLC or annunciator, plus a dedicated alarm contact that changes state only on a trip event — useful for remote fault indication without wiring through the aux contacts.
The 160 A continuous rating at 40–50 °C is the number to spec against for a feeder breaker. If your panel ambient runs above 55 °C, use the derated values — 154 A at 55 °C, 148 A at 60 °C — to avoid nuisance tripping on a warm day. The 25.5 W maximum power loss means it dissipates heat; ensure ventilation or spacing in a dense panel. Latching endurance is rated at 20 000 operations — that is the mechanical life for the switching mechanism, not the electrical endurance under load.