That makes it a straight drop-in for a 400 A bus or feeder that sees a warm enclosure. Breaking capacity sits at 242 kA at 240 V, 187 kA at 415/440 V, and 121 kA at 500 V; at 690 V it still clears 9 kA. For a line-side fault with those SCCR numbers, this breaker holds coordination without upstream fuses in most industrial panels.
That's a standard SENTRON 3VA2 frame footprint — it occupies the same cutout as other 3VA2 breakers in the 400 A class. The 3-pole construction with line protection design means it's set up for feeder or main breaker duty, not motor circuit protection.
Auxiliaries and releases
If you need remote status or emergency trip, the wiring points are already there; if you need UVR or GF, this isn't the right order code.
Environmental and storage
The storage maximum is the handling limit, not the running limit — the breaker can sit in a cold truck or hot container without damage.