What it is and what it does
The Siemens SENTRON 3VA2163-5KP32-0DA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 63 A across the full ambient range from 40 °C to 70 °C — no derating needed in a warm panel. Its interrupting capacity hits 121 kA at 415 V and 187 kA at 240 V, so it handles high-fault utility feeds without cascading upstream — a key spec for main breaker or high-SCCR panel positions. The breaker includes an undervoltage release (UVR) and a communication function, making it suitable for remote tripping and status monitoring in automated distribution schemes.
Panel fit and integration
Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep — a standard SENTRON 3VA2 frame that fits existing DIN-rail or panel-mount cutouts without rework. Rated insulation voltage of 800 V gives headroom for 690 V systems; the breaker carries a 6.5 W maximum power loss, manageable in a ventilated enclosure.
Breaking capacity across voltages
Interrupting ratings: 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 — the 690 V figure is low, so verify coordination if that voltage is in play.