Siemens SENTRON 3VA1020-4ED36-0AH0 — 20 A MCCB with TM210 Release
The interrupting capacity hits 121 kA at 240 V and 75.6 kA at 415 V — numbers that tell you this breaker handles high-fault-current scenarios without cascading upstream. The TM210 thermal-magnetic release is fixed, so there's no dial to adjust the trip curve; what you see on the nameplate is what you get in the panel. Thermal derating is flat from 40 °C through 50 °C at 20 A, then drops to 19.2 A at 55 °C and 18 A at 70 °C.
Integration — Panel Fit and Auxiliary Wiring
The 3VA1020-4ED36-0AH0 measures 76.2 mm wide, 130 mm tall, and 70 mm deep — a standard 3-pole MCCB footprint that drops into most SENTRON distribution panels without re-drilling the mounting plate. Wire it as a standalone line protector, not as a remote-controlled or communicating device.