The 3VA1120-5EF32-0JA0: Rated 20 A continuous at 40 °C, it holds that rating flat through 55 °C, then derates to 19 A at 60 °C and 70 °C — useful to know if this breaker sits in a warm enclosure near other heat sources. The breaking capacity is what makes this part stand out: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and still 17 kA at 500 V and 690 V. That kind of interrupting capability means it can be placed upstream in a high-fault panel without worrying about cascading failure through the switchgear. The shunt trip (STL) allows remote tripping from a control signal, which is essential for emergency-stop circuits or supervisory shutdown schemes.
Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — a standard 3-pole MCCB footprint that drops into SENTRON distribution panels and most DIN-rail or base-mount enclosures without modification.