The Siemens SENTRON 3VA1116-3EF36-0BA0 is a 3-pole molded case circuit breaker rated 160 A at 40 °C, with a TM240 thermal-magnetic overcurrent release and an integrated undervoltage release (UVR). The TM240 release is thermal-magnetic — thermal for overload protection, magnetic for short-circuit — no electronic adjustments, no communication module, just a straightforward line-protection device that doesn't need commissioning software.
The breaker measures 130 mm high, 76.2 mm wide, and 70 mm deep — a standard 3-pole MCCB footprint that fits SENTRON distribution boards and most DIN-rail adapter plates. Width matches the 3VA1 family, so if you're replacing a 3VA1112 or 3VA1110 in the same panel, the busbar and mounting holes align without re-drilling.
What the undervoltage release changes
The -0BA0 suffix signals the factory-fitted undervoltage release (UVR). The UVR is a separate auxiliary release, not part of the TM240 overcurrent trip; it operates independently on the shunt mechanism.
Thermal derating — real-world current
At 55 °C it derates to 158 A, at 60 °C to 155 A, at 65 °C to 153 A, and at 70 °C to 150 A. The TM240 release still responds correctly; the thermal element just sees a higher ambient.