Siemens 3VA2216-7KP32-0EL0 — 160 A MCCB with ETU850 Trip Unit
The Siemens 3VA2216-7KP32-0EL0 is a SENTRON 3VA2 molded case circuit breaker rated for 160 A continuous current (Iu) across three poles, fitted with an ETU850 electronic trip unit for line protection duty. Its interrupting capacity reaches 330 kA at 240 V AC and 242 kA at 415 V AC, dropping to 4.5 kA at 690 V AC — the 690 V figure governs its use in 690 V distribution where fault current is limited. The ETU850 provides adjustable protection curves and communication capability, making this breaker suitable for selective coordination studies in low-voltage switchgear.
Thermal Derating and Panel Fit
The breaker carries its full 160 A rating from 40 °C through 50 °C ambient, then derates linearly to 136 A at 70 °C — a curve that matters when packing multiple breakers into a closed enclosure. At 55 °C it's 154 A; at 60 °C, 148 A; at 65 °C, 142 A. The 105 mm width and 181 mm height fit standard 3-pole MCCB panel cutouts; the 107 mm depth leaves clearance for rear-mounted busbars or cable lugs. Front IP40 protection handles typical switchgear environments; no washdown rating here.