What this MCCB carries and where it fits
The 3VA2163-5JQ32-0BC0: It ships with an undervoltage release (UVR) and two auxiliary switches (HQ type) factory-fitted, so you don't have to order those as separate add-on kits. The UVR trips the breaker when control voltage drops below a threshold — useful for safety circuits that need a loss-of-voltage shutdown. Communication function is built in, meaning it can report status to a higher-level system without an external module.
Breaking capacity across voltages — where it works and where it doesn't
The 187 kA at 240 V is the headline number, but the real-world test is at your system voltage. At 415 V it still delivers 121 kA — enough for most industrial distribution boards with a transformer secondary. At 500 V it drops to 75.6 kA, still high. At 690 V it falls to 3.7 kA, which is a hard limit: if your fault current exceeds that, this breaker will not clear it safely. For 690 V applications, step up to the 3VA2 frame with a higher interrupting rating, or coordinate with a current-limiting upstream device.