Its adjustable trip module spans 600 A minimum to 3 000 A maximum, covering motor circuits, feeders, and distribution sub-mains. Breaking capacity hits 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 5.2 kA at 690 V — numbers that tell you this is a high-interrupting frame for fault-current-heavy industrial services, not a light distribution breaker. The 3-pole design and built-in undervoltage release (UVR) mean it drops the load on loss of control voltage — a standard requirement for emergency-stop chains and safety circuits where a sag or dropout must open the main disconnect.
Starter-protection design — built for motor duty
This MCCB carries the product-designation "Starter protection", meaning its trip curve and internal construction are tuned for motor-start inrush rather than pure distribution — a detail that matters when you're coordinating a feeder breaker with a motor starter's overload relay. Dimensions are 105 mm wide × 181 mm high × 86 mm deep — a 3-pole frame that fits the standard Siemens 3VA2 cutout and bus-bar pattern, so a retrofit into an existing SENTRON panel requires no drilling or bus rework.
The basic switch variant is 3VA2220-7MS32-0AA0 — the same frame without the UVR — which is useful to know for cross-referencing spare-part inventories or if a downstream spec calls for the no-release version.
Environmental and compliance range
Operating temperature spans -25 °C to 70 °C, with storage from -40 °C to 80 °C — the storage floor matters for winter site staging; the operating ceiling matches the 70 °C full-load rating, so no additional derating curve to apply.