What this 20 A MCCB brings to a panel
It carries a 52.5 kA interrupting rating at 240 V, 32 kA at 415 V, and 13.6 kA at 440 V — numbers that tell you it handles serious fault current without needing an upstream fuse for most industrial panels. The TM210 thermal-magnetic release handles the overload and short-circuit protection. A built-in shunt trip (STL) gives you remote trip capability, which matters when you're tying the breaker into an E-stop string or a safety circuit.
Thermal derating you need to know
Above that it starts to step down: 19.2 A at 55 °C, 18.8 A at 60 °C, 18.4 A at 65 °C, and 18 A at 70 °C.
What fits and what doesn't
The 3VA1020-2ED36-0HA0 measures 70 mm deep, 76.2 mm wide, and 130 mm high — a standard SENTRON compact footprint that drops into most DIN-rail or panel-mount MCCB layouts. The shunt trip accessory is order code 3VA9688-0BL30 if you need a spare or a separate part number for the BOM.