The Siemens 3VA1180-5EF32-0KH0 is a SENTRON 3VA1 molded case circuit breaker (MCCB) rated for line protection in distribution panels. It carries 80 A continuously at 40 °C and delivers a 187 kA interrupting rating at 240 V — that's the figure that governs fault-clearing capability in low-voltage switchgear. The 3-pole construction with shunt trip (STL) and two auxiliary switches plus a trip alarm switch makes it ready for remote tripping and status feedback in automated lines.
Breaking capacity and derating
The interrupting capacity drops with system voltage: 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. For a 480 V panel in North America, the 75.6 kA at 440 V is the closest published point — expect adequate SCCR headroom for most industrial services. Current rating holds flat at 80 A from 40 °C through 50 °C, then derates to 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C. That thermal curve means no derating needed in a standard 40 °C enclosure; above that, the 74 A floor at 70 °C still covers most 70 A continuous loads.
Integration and panel fit
Mounts on a DIN rail or directly to a backplate. Dimensions are 70 mm deep, 76.2 mm wide, 130 mm tall — a standard 3-pole MCCB footprint that fits most existing SENTRON or third-party distribution blocks. The shunt trip (STL) allows remote opening via a control signal; the two auxiliary switches and one trip alarm switch (HQ design) provide status to a PLC or SCADA without extra interface relays. Power loss is 19.2 W maximum at rated load — plan ventilation if grouping multiple breakers in a sealed enclosure.