What this MCCB carries — and what that means for the panel
The Siemens 3VA2116-5JP42-0AH0 is a SENTRON molded case circuit breaker rated for 160 A continuous current across the full operating temperature range from 40 °C to 70 °C — no derating needed up to that ceiling, which simplifies panel thermal budgeting. 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. That spread covers most industrial distribution voltages in North America and Europe; the 690 V figure is the one to watch if you are feeding a 690 V motor drive line — it still clears a 3.7 kA fault, but upstream coordination needs to respect that floor. The breaker includes a communication function and carries 2 auxiliary switches plus 1 trip alarm switch HQ as standard — so it can report its status to a PLC or SCADA without an add-on module. No undervoltage release or ground-fault monitoring version on this variant; those are separate order-code branches. The basic switch assembly is order code 3VA21165JP420AA0, which is the replaceable switching mechanism inside the molded case.
Panel fit and footprint
Dimensions are 86 mm deep by 140 mm wide by 181 mm tall. 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.