The Siemens 3VA2140-5HN46-0AA0 is a SENTRON 3VA2 molded case circuit breaker (MCCB) rated for 40 A continuous current on a 4-pole frame, fitted with the ETU350 electronic overcurrent release. The ETU350 is a programmable electronic trip unit, so you get adjustable long-time, short-time, and instantaneous pickup settings rather than fixed thermal-magnetic curves — useful when you need selectivity downstream.
The 3VA2140-5HN46-0AA0 carries 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. That steep drop above 500 V is typical for a 40 A frame — at 690 V the arc extinction gets harder. For a 480 V panel (common in North America) you'd interpolate between the 440 V and 500 V figures; the 75.6 kA at 500 V still gives headroom for most service-entrance applications.