What this 3VA2 is and what it does
The Siemens SENTRON 3VA2010-6HL32-0KC0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current with no derating across the full ambient range from 40 °C to 70 °C — that means it holds its full 100 A rating even in a hot panel or near other heat sources. It's designed for line protection (feeder duty), with an adjustable thermal-magnetic trip unit covering 150 A minimum to 1 200 A maximum — so you set the actual trip point to match the downstream load, not the other way around. Interrupting capacity is 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3 kA at 690 V — high enough for most industrial service-entrance or distribution panels where fault current is substantial.
Built-in accessories and release options
This variant comes with a shunt trip (STL) auxiliary release and two HQ auxiliary switches — the shunt trip lets a remote signal (e.g., E-stop, fire alarm, PLC output) trip the breaker electrically without anyone pulling the handle. No undervoltage release, no ground-fault monitoring, no communication function on this order code — it's a straightforward line-protection MCCB with remote trip capability and status feedback via the aux switches. Dimensions are 86 mm deep, 105 mm wide, 181 mm tall — standard 3-pole MCCB footprint for panel mounting; verify bus-bar and enclosure cutout compatibility against your existing layout.
Lifecycle and sourcing reality
Power loss is 13.5 W maximum at rated load — useful for thermal budget calculations inside a sealed enclosure. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C — fine for most indoor industrial environments.