What it is and what it does
The SENTRON 3VA2116-8HN46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 160 A continuous current, fitted with an ETU350 electronic trip unit. It is designed for line protection in distribution panels and industrial switchboards where high fault-current interruption is required. Breaking capacity reaches 440 kA at 240 V AC, 330 kA at 415 V and 440 V AC, 220 kA at 500 V AC, and 53 kA at 690 V AC — figures that place it in the high-interrupting category for large industrial services or transformer secondary protection. Rated insulation voltage is 800 V, and the breaker carries a maximum power loss of 19.7 W at rated current.
Ratings and what they mean for fit
The 160 A rating holds flat from 40 °C up to 70 °C — no derating needed even in a warm enclosure, which simplifies panel thermal calculations. Neutral protection is adjustable: OFF, 50 %, or 100 % of the phase current, selected via a DIP or rotary on the trip unit. This matters when the neutral conductor is undersized or when you need full neutral protection on a 4-pole breaker feeding a non-linear load. The ETU350 release offers an adjustable short-time delay response time (tr) from 0.5 s to 17 s, enabling selective coordination with downstream breakers. Front-face protection is IP40 — suitable for enclosed distribution boards; not rated for washdown or outdoor exposure without a cabinet. Operating temperature range spans –40 °C to +70 °C; storage range extends to 80 °C. The –40 °C lower limit supports cold-climate installations without auxiliary heating.
Where it fits in a panel
Dimensions are 181 mm height, 140 mm width, 86 mm depth.