The Siemens 3VA1020-2ED36-0CC0 is a SENTRON molded case circuit breaker (MCCB) for line protection, built for three-pole switching at a rated current of 20 A across the 40 °C to 55 °C band — it only starts to derate to 19 A at 60 °C and holds there through 70 °C. It carries a 52.5 kA interrupting capacity at 240 VAC, dropping to 32 kA at 415 V, 13.6 kA at 440 V, and 7.5 kA at both 500 V and 690 V — giving you a clear picture of where it can clear a fault without upstream coordination headaches.
Built-in undervoltage release and auxiliary switches
The breaker measures 130 mm high, 76.2 mm wide, and 70 mm deep — a standard 3-pole MCCB footprint that drops into most SENTRON panelboards and distribution blocks without re-drilling the mounting plate.