It is a 4-pole unit designed for line protection, with a maximum interrupting capacity of 187 kA at 240 V AC, dropping to 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. The basic switch assembly is order code 3VA21165JP420AA0, which is the replaceable switching mechanism inside the molded case.
That 140 mm width is the standard 4-pole MCCB footprint for the SENTRON 3VA2 frame — it occupies the same DIN-rail or mounting-plate real estate as other 4-pole breakers in the series, so swapping in this unit for a like-frame 3VA2 variant should not require drilling new holes or reworking gland plates. Depth of 86 mm leaves room for rear-access busbars in a typical 600 mm deep enclosure.
