What this MCCB delivers
The Siemens SENTRON 3VA1116-5EF42-0KA0 is a 4-pole molded case circuit breaker rated for 160 A continuous current at 40 °C, with a TM240 thermal-magnetic overcurrent release and an integrated shunt trip (STL) for remote tripping. Its interrupting capacity reaches 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V — numbers that tell you it handles high-fault utility feeds or transformer secondaries without cascading upstream. Rated insulation voltage is 800 V, and the breaker carries IP40 protection on the front — suitable for enclosed panel mounting where dust ingress is minimal. The 70 mm depth and 101.6 mm width fit standard SENTRON 3VA panel cutouts, so it drops into existing busbar or cable connections without re-drilling.
Thermal derating and real-world current
The 160 A rating holds flat from 40 °C to 50 °C, then begins a gentle derating curve: 153.6 A at 55 °C, 150.4 A at 60 °C, 147.2 A at 65 °C, and 144 A at 70 °C. For a panel that runs warm — say, 55 °C ambient — you still have 153.6 A of continuous capacity, which is tighter than the headline number but still generous for a 160 A frame.
What is not included
The breaker ships without auxiliary contacts, undervoltage release, ground-fault monitoring, phase-failure detection, or communication function. The only integrated auxiliary release is the shunt trip (STL), which uses order code 3VA9688-0BL33 for the trip coil. No trip indicator on the front — you will need an external status signal if remote indication is required.