What the interrupting ratings mean for your panel
The Siemens 3VA2010-5KP32-0DA0 is a SENTRON molded case circuit breaker (MCCB) rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. The 3-pole design handles three-phase line protection, and the interrupting capacity tells you where it can safely clear a fault without upstream cascading: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V. That 187 kA figure at 240 V is the key number for high-fault panels fed close to a transformer; the drop to 3 kA at 690 V means this frame is sized for 400–500 V distribution, not 690 V motor circuits.
Built-in undervoltage release and communication
This MCCB ships with an undervoltage release (UVR) as the auxiliary release — it trips the breaker when supply voltage drops below a threshold, protecting downstream loads from brownout conditions. The communication function allows integration into a plant-wide monitoring system, so a panel builder can wire this into a PLC or energy management bus without adding a separate comm module. The basic switch assembly is order code 3VA20105KP320AA0, which is the internal sub-assembly if you ever need to replace just the switching mechanism rather than the whole breaker.
Panel fit and environmental limits
Dimensions are 105 mm wide, 181 mm high, 86 mm deep (–) — a standard 3-pole MCCB footprint that fits a typical DIN-rail or panel-mount cutout. Operating temperature range is -25 °C to 70 °C (–), storage from -40 °C to 80 °C (–). Maximum power loss is 16 W, which matters for thermal budgeting inside a sealed enclosure. Insulation voltage is rated 800 V, confirming it is suitable for 400 V and 480 V distribution systems.