The Siemens SENTRON 3VA2010-6HL32-0CC0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current across the full ambient range from -25 °C to 70 °C — no derating needed up to the enclosure's thermal limit. It's designed for line protection in distribution panels, with a 242 kA interrupting capacity at 240 V and 187 kA at 415/440 V, giving you serious fault-current headroom for high-capacity transformer feeds or bus risers.
What the ratings mean for fit
That 100 A rating holds flat from 40 °C to 70 °C — you don't lose capacity as the panel warms up, which is rare for a compact frame. The 242 kA at 240 V and 187 kA at 415 V are the maximum short-circuit withstand; in practice, you coordinate downstream breakers so the 3VA opens before upstream gear sees the full fault. The 3 kA rating at 690 V is a reminder this is a 600 V class breaker — don't push it above that voltage for fault clearing. It ships with an undervoltage release (UVR) and two HQ auxiliary switches — the UVR drops the breaker if control voltage falls below a set threshold, which is standard for emergency-stop or undervoltage protection schemes in motor control centers. The aux switches give you status feedback to a PLC or annunciator. Power loss is 16 W maximum — negligible for thermal budgeting in a populated panel, but worth noting if you're packing multiple breakers in a sealed enclosure.
Mounting and panel integration
Dimensions are 105 mm wide × 181 mm high × 86 mm deep. The 105 mm width is a standard 3-pole MCCB footprint — it fits most panelboard cutouts and DIN-rail adapters (the breaker itself is bolt-on, not snap-on). The 86 mm depth leaves clearance for rear-mounted bus bars or cable ducts.