What the ratings mean for fit
The Siemens SENTRON 3VA2116-6HL32-0KL0 is a 3-pole molded case circuit breaker rated for a continuous current of 160 A at 40 °C, with the same rating holding up to 50 °C — no derating needed in a typical 40 °C panel. Above that, it steps down: 154 A at 55 °C, 148 A at 60 °C, 142 A at 65 °C, and 136 A at 70 °C. That thermal curve governs whether this breaker fits a hot switchgear lineup without nuisance tripping. Interrupting capacity is the headline here: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 5 kA at 690 V. Those numbers mean it can safely clear a fault up to those levels without upstream fuses or a larger breaker — critical for high-fault panels near utility transformers or large motor banks. The ETU320 electronic trip unit provides line protection with a voltage trigger and a trip indicator. Auxiliary contacts include 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch (HQ version) — enough to signal status back to a PLC or annunciator without adding external relays.