Siemens SENTRON 3VA1216-4EF32-0AH0 — 160 A MCCB, Line Protection
It carries a TM240 thermal-magnetic release — a fixed thermal element with a magnetic trip that handles moderate inrush without nuisance tripping on motor-start or transformer-energizing events.
Breaking capacity — what the voltage ratings mean for your bus
This breaker delivers 121 kA interrupting capacity at 240 V, 75.6 kA at 415 V, 25 kA at 440 V, and 11.9 kA at 690 V. The 690 V figure (11.9 kA) is relevant for 690 V industrial drives or mining gear; not every 160 A frame carries that rating.
Thermal derating — the real-world current you can count on
At 55 °C it drops to 155.6 A, at 60 °C to 151.2 A, at 65 °C to 146.8 A, and at 70 °C to 142.4 A. For a panel that runs warm — say 55 °C ambient inside the enclosure — you lose about 4.4 A off the nameplate. That matters when sizing for a continuous load near the limit; the breaker won't nuisance-trip, but the margin shrinks.
IP40 on the front (protected against tools and small wires), rated for operation from -25 °C to 70 °C and storage from -40 °C to 80 °C.