The Siemens 3VA2010-5HL36-0AA0 is a SENTRON 3VA2 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. That 100 A is the rated current, not a maximum; the breaker's frame can handle up to 1 200 A, so this is a 100 A trip unit in a frame sized for future uprating if the load grows. Three-pole construction with an ETU320 electronic overcurrent release, designed for line protection (not motor or feeder). The interrupting ratings are what make this part stand out: 187 kA at 240 V AC, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V. That 187 kA at 240 V is a high-fault-capacity rating — useful where the available fault current is substantial, like a main service entrance or a large distribution panel. Insulation voltage rated 800 V, IP40 protection on the front (finger-safe against tools, not washdown). Dimensions: 181 mm high, 105 mm wide, 86 mm deep — fits standard MCCB panel cutouts. Power loss at full load is 13.5 W, which is moderate for a 100 A frame; panel ventilation is still advisable if multiple breakers are ganged.
What the ratings mean for fit
The 100 A continuous rating is flat from 40 °C to 70 °C — that's unusual. Many breakers derate above 40 °C; this one doesn't, so it's a good fit for hot environments like enclosed switchgear or outdoor panels in direct sun. The ETU320 electronic trip unit offers adjustable thermal and magnetic settings (not fixed), which gives selectivity flexibility downstream. The 187 kA interrupting capacity at 240 V is the headline number, but the 121 kA at 415 V is the one that matters for most three-phase commercial and industrial panels in North America and Europe. At 690 V it drops to 3 kA — that's still enough for most 690 V drives and motor circuits, but verify the available fault current at that voltage before specifying.
Integration and mounting
Mounts in a standard MCCB panel cutout — no DIN rail. The 105 mm width means it occupies three pole spaces in a typical panel layout. Front IP40 protection is sufficient for enclosed panels; if the breaker is mounted on a door or exposed, consider a higher IP rated cover or enclosure. No undervoltage release, no shunt trip, no communication function on this variant. If you need remote tripping or status feedback, you'll need the accessory kit or a different order code. The ETU320 is a standalone electronic trip unit; it doesn't talk to a bus.