160 A MCCB with flat thermal derating and 242 kA SCCR headroom
The Siemens 3VA2116-6JQ36-0AA0 is a SENTRON molded case circuit breaker rated for 160 A continuous current (Iu) across its full ambient temperature range — it holds 160 A from 40 °C through 70 °C with no derating step, which simplifies panel sizing in warm enclosures. The 242 kA interrupting rating at 240 V gives substantial fault-current headroom for high-capacity transformer-fed distribution, dropping to 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V.
That gives you consistent ampacity in a hot panel without oversizing the frame.
The 3VA2116-6JQ36-0AA0 measures 105 mm wide, 181 mm high, and 86 mm deep — a 3-pole frame that fits standard MCCB panel cutouts. The optional motor drive extension allows remote closing or opening. The ETU560 electronic trip unit supports communication, so you can integrate status and trip data into a BMS or PLC over the breaker's communication interface.