Siemens 3VA2116-5HN32-0BL0 — 160 A SENTRON MCCB for Line Protection
The Siemens 3VA2116-5HN32-0BL0 is a SENTRON molded case circuit breaker (MCCB) rated 160 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. Three poles, line protection design, fitted with an undervoltage release (UVR) and a full auxiliary switch block: two auxiliary switches, one trip alarm switch, and one electrical alarm switch (HQ). Interrupting capacity is the headline number for this class: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. That 187 kA at 240 V means it can safely clear a bolted fault of that magnitude without rupturing — critical for high-fault-capacity service-entrance or distribution panels where the available fault current is known to be high. Power loss is 28 W maximum at rated current — a figure to check against enclosure thermal rise if the panel is tightly packed. Dimensions: 105 mm wide, 181 mm tall, 86 mm deep. The 86 mm depth is the dimension that matters when the breaker mounts in a distribution panel with a shallow backpan or a cover-mounted handle mechanism.
Integration — Auxiliary Switches and Undervoltage Release
The auxiliary switch block is factory-fitted: two auxiliary switches (form C, typically) plus a separate trip alarm switch and an electrical alarm switch (HQ). That gives four independent signal paths for status feedback to a PLC or annunciator panel — one for breaker open/closed, one for trip indication, one for electrical alarm (e.g., shunt trip or UVR activation). The undervoltage release (UVR) trips the breaker when control voltage drops below a set threshold — standard for applications where loss of control power must open the main disconnect (e.g., emergency-stop chains or safety isolation). Verify the UVR coil voltage rating against your control circuit before wiring. Operating temperature range: -25 °C to +70 °C ambient during operation; storage from -40 °C to +80 °C. The 70 °C operating ceiling matches the continuous-current rating — no derating curve needed within that window, per the spec.