160 A MCCB with Motor Protection — What the Ratings Mean for Your Panel
The Siemens SENTRON 3VA2216-5MN32-0AB0 is a 3-pole molded case circuit breaker rated for 160 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. That flat thermal curve simplifies panel sizing: you can load it to 160 A in a warm enclosure without recalculating. Its interrupting capacity hits 187 kA at 240 V AC, dropping to 121 kA at 415/440 V, 75.6 kA at 500 V, and 4.5 kA at 690 V. For a 160 A frame, that 187 kA figure at 240 V is exceptionally high — it handles high-fault scenarios like transformer secondaries or large motor control centers without needing a current-limiting upstream breaker. This is a motor protection design, meaning its trip curve is shaped for motor inrush — it rides through starting current without nuisance tripping, unlike a standard distribution breaker. Phase failure detection is built in, so it will trip on a lost phase, protecting the motor from single-phasing.
Panel Fit and Integration
Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep — a standard 3-pole MCCB footprint that fits SENTRON panelboards and most DIN-rail adapter plates. The 86 mm depth is shallow enough for 200 mm deep enclosures with wiring space left over. Maximum power dissipation is 19.7 W — modest for a 160 A frame, so thermal management in a sealed panel is straightforward. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.
Built-in Auxiliary Switches and Trip Options
This breaker ships with two HP auxiliary switches for remote status indication — open/closed and tripped signals back to a PLC or annunciator. No undervoltage release, no ground-fault monitoring, and no communication module are fitted; those are add-on accessories if needed. The trip indicator is not present — you'll rely on the auxiliary switch or handle position for status. No voltage trip trigger is built in.