What this MCCB carries — and where the ratings matter
The Siemens SENTRON 3VA1116-5EF36-0JA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, fitted with a TM240 thermal-magnetic overcurrent release and an integrated shunt trip (STL) for remote opening. It carries 160 A continuously at 40 °C ambient, derating to 150 A at 70 °C — the thermal curve governs the real panel load, not the 160 A headline. The interrupting ratings are the key fit check: 121 kA at 415 V and 75.6 kA at 440 V, so it handles high-fault downstream of a transformer or in a distribution board where SCCR demands are stiff. Rated insulation voltage is 800 V, which covers 690 V systems with margin.
Panel fit and integration notes
Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — standard 3-pole MCCB footprint for a 160 A frame. Mounts on DIN rail or panel-mount via the SENTRON base adapter. The shunt trip (STL) occupies the auxiliary slot; no undervoltage release is fitted. The basic switch order code is 3VA11165EF360AA0 for reference. No communication function, no ground-fault monitoring — this is a straight thermal-magnetic breaker with remote trip capability.
What the TM240 release means for coordination
The TM240 release is a fixed thermal-magnetic trip unit — not electronic, not adjustable. The thermal element tracks cable heating; the magnetic instantaneous pickup is fixed at the factory. For selectivity studies, the 121 kA at 415 V and 75.6 kA at 440 V are the let-through values to coordinate with downstream breakers. Power loss is 38 W maximum at rated load — heats the enclosure, so account for it in a sealed panel.