What this MCCB carries and where it fits
The Siemens 3VA2116-5KP46-0AA0 is a SENTRON 3VA2 molded case circuit breaker (MCCB) rated for 160 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. Its 4-pole construction and ETU850 electronic trip unit make it a line-protection device with communication capability, suited for main or feeder breakers in distribution panels where selectivity and remote monitoring matter.
Breaking capacity — what the numbers mean for your fault level
This MCCB delivers 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. Those are the interrupting ratings at each system voltage — the breaker can safely clear a fault up to that level without welding contacts or venting arc gas into the enclosure. For a 480 V panel with a 100 kA available fault current, this breaker holds 75.6 kA at 500 V, which covers the 480 V case with headroom. The 690 V figure (3.7 kA) is a reminder that at higher voltages the arc extinction challenge grows; this is not a 690 V main breaker for high-fault installations.
Physical fit and panel integration
Dimensions are 181 mm high, 140 mm wide, and 86 mm deep — a 4-pole MCCB footprint that fits standard Siemens 3VA2 mounting accessories. The IP40 front protection means it is suitable for enclosed panel mounting where the door or cover provides the outer seal; not rated for washdown or outdoor exposure without an additional enclosure. The 25.5 W maximum power loss at rated current should be factored into the panel thermal budget, especially in a sealed cabinet with multiple breakers.