What this MCCB carries and where it fits
The Siemens 3VA1116-5EF42-0KH0 is a SENTRON molded case circuit breaker rated for 160 A continuous at 40 °C through 50 °C, with a 4-pole configuration and line protection design. Its interrupting capacity reaches 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V — figures that cover high-fault utility feeds and transformer secondaries without cascading upstream. The 70 mm depth and 101.6 mm width fit standard SENTRON panel cutouts; the 130 mm height leaves clearance for the rotary handle and auxiliary wiring. Rated insulation voltage of 800 V and an operating range from -25 °C to 70 °C mean this breaker handles industrial panel environments where ambient temperature swings and higher system voltages are the norm. The 38 W maximum power loss at rated load is manageable for closed cabinets with moderate ventilation.
Thermal derating and auxiliary complement
The 160 A rating holds flat from 40 °C to 50 °C, then derates to 158 A at 55 °C, 155 A at 60 °C, 153 A at 65 °C, and 150 A at 70 °C. For a panel running at 55 °C ambient, the continuous current limit drops 2 A — negligible for most loads, but worth checking if the circuit is already sized at the breaker's nominal. This order code ships with 2 auxiliary switches and 1 trip alarm switch HQ (the HQ designation indicates a separate alarm contact that changes state only on a fault trip, not on manual switching). A shunt trip (STL) is factory-installed, so you can remote-trip the breaker via a control signal without adding a separate release module.