What this MCCB delivers on the line
The Siemens SENTRON 3VA2216-5KP32-0AA0 is a 3-pole molded case circuit breaker rated for a continuous current Iu of 160 A, with the same 160 A hold from 40 °C through 70 °C — no derating curve to chase across the panel ambient range. The ETU850 electronic trip unit handles line protection (overload and short-circuit) and includes a communication function for integration into a plant-wide monitoring scheme.
Breaking capacity that keeps selectivity
Rated breaking capacity hits 187 kA at 240 V AC and 121 kA at 415 V AC — numbers that let this MCCB sit upstream of a distribution board with high fault current without cascading. At 690 V AC the rating drops to 4.5 kA, which still covers most 690 V motor control center bus faults. The 800 V rated insulation voltage (Ui) confirms the internal clearances are sized for 690 V systems.
Panel fit and mounting
Dimensions are 105 mm wide, 181 mm high, and 86 mm deep — a footprint that fits standard Siemens SENTRON 3VA mounting bases and busbar systems. The front face carries IP40 protection, meaning it's sealed against tools and small solid objects but not against moisture; keep it inside a panel enclosure rated for the environment.
Trip unit and neutral protection
The ETU850 electronic trip unit provides adjustable overload and short-circuit protection for line (phase) faults. The N-conductor protection is adjustable from OFF through 20 % to 160 % of the phase setting — useful for 4-wire systems where the neutral may carry harmonics or unbalanced current. Maximum power loss is 19.7 W, which matters for thermal budgeting inside a sealed panel.