What this MCCB does for a motor circuit
The Siemens 3VA2216-8KP42-0AA0 is a 4-pole SENTRON molded case circuit breaker rated 160 A continuous, with an adjustable overcurrent range from 240 A up to 1 920 A. That adjustable band lets you dial the trip to the actual load without swapping the frame — handy when you're protecting a motor feeder that might get re-rated down the line. Interrupting capacity is the headline here: 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and still 52.5 kA at 690 V. That's fault-current muscle for heavy industrial switchgear — think large motor control centers or transformer secondaries where available fault current is high. The ETU850 electronic trip unit gives you adjustable long-time, short-time, and instantaneous protection plus ground-fault detection. It's rated for continuous duty at 160 A across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. Insulation voltage is 800 V. The front face carries IP40 protection, fine for a dry indoor panel; no washdown rating.
Panel fit and wiring
Dimensions: 86 mm deep, 140 mm wide, 181 mm tall. Four-pole footprint — line and load lugs on both ends. The breaker has a communication function for remote monitoring or trip-data retrieval, though no specific protocol is listed in this spec set. Power loss at rated current is 19.7 W — modest enough that ventilation in a standard MCC bucket handles it. No undervoltage release and no trip indicator; if you need a local trip flag, plan on an auxiliary contact add-on.