The Siemens 3VA1040-4ED32-0CH0 is a 3-pole SENTRON molded case circuit breaker rated 40 A continuous at 40 °C, with a 121 kA interrupting capacity at 240 V — that's the SCCR headroom that keeps a fault from cascading upstream in a high-fault panel.
Interrupting ratings by voltage — where it clears
This breaker's interrupting capacity drops as line voltage rises: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. For most 480 V panels the 52.5 kA at 440 V is the relevant figure (close enough to 480 V for coordination studies).
The 40 A rating holds flat from 40 °C up to 50 °C, then derates to 38.4 A at 55 °C, 37.6 A at 60 °C, 36.8 A at 65 °C, and 36 A at 70 °C. Maximum power loss is 13.3 W, which matters for enclosure heat load calculations.
The trip alarm switch gives a separate dry contact that closes only on a fault trip, not on manual switching, which simplifies remote fault annunciation.