The Siemens 3VA2163-5JQ42-0AA0 is a SENTRON molded case circuit breaker (MCCB) with 4 poles, rated at 63 A continuous current across the full 40 °C to 70 °C ambient range — no derating needed up to 70 °C. It carries an ETU560 electronic trip unit, configurable for line protection, with an adjustable N-conductor protection setting (OFF, 40 % to 160 %). Breaking capacity reaches 187 kA at 240 V AC and 121 kA at 415 V and 440 V; at 690 V it still interrupts 3.8 kA.
Panel-builder commissioning notes
The IP40 front protection means it is suited for indoor panel use where no water jets are present. The ETU560 trip unit supports communication (Communication Function: Yes), allowing integration with higher-level monitoring systems. Power loss is max 4 W, negligible for thermal budget in a populated cabinet.