Integrator's read on the 3VA1220-5GF42-0AD0
The interrupting capacity is the headline here: 187 kA at 240 V AC, 121 kA at 415 V, 36 kA at 440 V, and 17 kA at 690 V — meaning this breaker handles fault currents up to those levels without upstream coordination failure.
Above that, it derates: 194 A at 55 °C, 188 A at 60 °C, 182 A at 65 °C, and 176 A at 70 °C.
Physical fit and auxiliary contacts
Dimensions: 70 mm deep, 140 mm wide, 158 mm high. That 140 mm width on a 4-pole frame is standard for this class — verify the back-panel cutout matches your existing SENTRON or 3VA-series footprint before ordering. Ships with 3 auxiliary switches HQ (high-qualified) for status feedback to the PLC or annunciator panel.
Listed as current production in the SENTRON 3VA line. This is a standard catalog variant — not a special or phased-out build. For a BOM freeze or volume buy, send the order code and target quantity.