The Siemens 3VA1116-1AA36-0BH0 is a SENTRON switch disconnector in MCCB (molded case circuit breaker) design, built on the IEC frame 160. It is a 3-pole, 160 A rated disconnect that provides no overload or short-circuit protection — it is a straight isolator with an undervoltage release (UVR) for controlled opening under voltage-loss conditions. Rated 160 A continuously from 40 °C through 50 °C ambient, derating to 150 A at 70 °C. This is a load-break rated disconnect, not a circuit breaker — it switches load current but does not trip on overcurrent or short circuit.
At 70 °C it still carries 150 A — useful if the disconnect sits near transformers or drives. The UVR here does not have a leading contact, so the coil and main contacts open simultaneously — no delayed dropout. The trip alarm switch signals when the disconnect has opened due to UVR or manual operation — useful for remote status monitoring.
Front terminal connection with clamp terminals for the main circuit. Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures. Mechanical service life is 15 000 operating cycles typical.