SENTRON 3VA2 MCCB with undervoltage release — 160 A, 3-pole
The Siemens SENTRON 3VA2216-7MN32-0CA0 is a 3-pole molded case circuit breaker (MCCB) rated for 160 A continuous across the full ambient range of 40 °C to 70 °C — no derating needed up to that ceiling. Interrupting capacity hits 330 kA at 240 V AC, stepping down to 242 kA at 415/440 V, 187 kA at 500 V, and 4.5 kA at 690 V. This unit ships with an integrated undervoltage release (UVR) as the auxiliary release, making it a direct fit for motor protection schemes where loss-of-voltage tripping is required by code or machine safety logic.
Panel fit and integration
Dimensions are 105 mm wide × 181 mm high × 86 mm deep — a standard SENTRON 3VA2 footprint that drops into existing DIN-rail or screw-mounted panel layouts without re-drilling. The 86 mm depth leaves clearance behind the gland plate for wiring bends. Maximum power dissipation is 22.2 W, so adjacent device derating in a sealed enclosure should account for that heat load. Operating temperature range is -25 °C to 70 °C; storage from -40 °C to 80 °C.
Protection and release configuration
Designed for motor protection with phase-failure detection built in. The undervoltage release (UVR) trips the breaker when line voltage drops below a set threshold — typical for preventing automatic restart after a brownout or for emergency-stop circuits that need a mechanical latch. No auxiliary switch is fitted on this variant; no communication function; no ground-fault monitoring. Trip indicator is not present, so visual status comes from the handle position only. Short-time delay is adjustable between 4 s minimum and 17 s maximum for selective coordination downstream.