The Siemens 3VA1040-2ED42-0AA0-ZD00 is a 4-pole IEC frame 100 circuit breaker from the 3VA1 series, rated at 40 A with a breaking capacity class B Icu of 16 kA at 415 V. It uses a TM210 thermal-magnetic trip unit with fixed overload protection Ir=40 A and fixed short-circuit protection Ii=10 x In.
The fixed Ir=40 A means the thermal overload is not adjustable; if your load draws more than 40 A continuous, this is the wrong frame. The fixed Ii=10 x In (400 A short-circuit pickup) suits motor-starting or transformer inrush without nuisance tripping, but verify coordination with downstream devices.