The Siemens SENTRON 3VA1220-5EF32-0AG0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 200 A at 40 °C with no derating until 50 °C. At 70 °C ambient the continuous rating drops to 176 A, so a panel builder placing this breaker near heat sources or in a sealed enclosure should verify the thermal curve.
The 3VA1220-5EF32-0AG0 delivers 187 kA at 240 V and 121 kA at 415 V, with a steep drop to 17 kA at 690 V. The TM240 release uses a fixed thermal-magnetic trip; there is no electronic adjustment or communication function. For selectivity studies, the manufacturer's coordination tables should be consulted — the breaker's 200 A frame and high interrupting capacity make it a candidate for a main or large feeder position, not branch protection.
Dimensions: 158 mm height, 105 mm width, 70 mm depth. The 3-pole footprint matches other SENTRON 3VA frames, so a panel already cut for a 3VA1110 or 3VA1112 will accept this unit without rework — the width and depth are identical across the series for the same pole count.